Relation Between the Emeishan Mantle Plume Activity and Wumengshan Volcanic-Sedimentary Basin in Northeastern Yunnan

doi:10.19657/j.geoscience.1000-8527.2021.070

Abstract

Abstract:

To deepen the understanding on the evolution of the Emeishan mantle plume in Wumengshan area of northeastern Yunnan,detailed geological investigations of the Emeishan flood basalt and the underlying Qixia-Maokou Formation in the area, as well as petrological and isotopic chronological studies of the Emeishan flood basalt have been carried out. The results show that the crustal uplift caused by the Emeishan mantle plume activity formed the geological characteristics of the Qixia-Maokou Formation, which is thin in the west but thick in the east, and the Emeishan flood basalt, which is thick in the west but thin in the east, and the crustal uplift started at (273.1±3.1) Ma, and the uplift was about 512 m. However, this process was slow and did not cause the differential weathering and denudation of the limestone at the top of the Maokou Formation. Besides, the Emeishan flood basalt and Maokou Formation were basically deposited continuously. The Emeishan flood basalt in the Wumengshan area may have undergone four large-scale eruptions, corresponding to four sub-cycles. Each sub-cycle started with a sedimentary interbed, covered by a large number of overflow basalt facies. The eruption timing of the four subcycles was determined to be (261.9±2.0) Ma, (261.8±3.7) Ma, (261.6±1.9) Ma, (261.5±2.1) Ma, respectively. The main eruption phase lasted for about 0.4 My,and the mantle plume activity may last until (258.86±0.71) Ma. Based on the isotope chronology data, according to the thickness difference of Qixia-Maokou Formation, the horizontal and vertical variation characteristics of each subcycle of Emeishan flood basalt, the lithology and lithofacies characteristics of each subcycle and sedimentary interbed, the volcanic-sedimentary basinal evolution of Emeishan mantle plume in Wumengshan can be divided into the mantle plume upwelling (273.1-262.0 Ma), the basalt eruption(261.9-261.5 Ma ), and the mantle plume extinction stages (261.5-258.86 Ma ).

Key words: mantle plume, Emeishan flood basalt, volcanic-sedimentary basin, Maokou Formation

CLC Number:

P533

ZHANG Honghui, WU Liang, LI Hong, YU Yangzhong, YUAN Yongsheng, ZHANG Liyuan, LI Shizhong, ZHAO Jianbo, PAN Jiangtao, ZHAN Huasi, SHI Haitao, CHEN Guiren. Relation Between the Emeishan Mantle Plume Activity and Wumengshan Volcanic-Sedimentary Basin in Northeastern Yunnan[J]. Geoscience, 2022, 36(01): 225-243.

Figures/Tables 8

References 37

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序号		点号			元素含量/10^-6															²³²Th/ ²³⁸U					同位素比值及误差																																					年龄值及误差/Ma																																							谐和度/%
					Pb					²³²Th					²³⁸U										²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th											²⁰⁷Pb/²⁰⁶Pb									²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U											²⁰⁸Pb/²³²Th
					Pb					²³²Th					²³⁸U										比值			1σ					比值				1σ					比值				1σ					比值					1σ						年龄		1σ							年龄				1σ					年龄						1σ					年龄			1σ
Ⅰ		1			6.8					38.1					39.6					0.96					0.065 1			0.003 9					1.181 0				0.070 0					0.132 7				0.002 5					0.038 7					0.002 3						660		120							782				33					802.0						14.0					767			44							97
		2			44.5					145.2					218.3					0.67					0.070 1			0.001 9					1.585 0				0.052 0					0.162 7				0.001 6					0.048 2					0.002 0						921		54							964				19					971.4						8.9					950			39							99
		3			191.3					1 036.0					833.0					1.24					0.070 8			0.001 3					1.613 0				0.041 0					0.163 8				0.001 3					0.048 6					0.001 9						943		38							974				16					977.5						7.2					959			36							100
		4			103.6					206.9					281.0					0.74					0.100 1			0.001 9					4.064 0				0.100 0					0.291 7				0.002 4					0.087 6					0.003 5						1 621		35							1 645				21					1 651.0						12.0					1 697			65							100
		5			106.0					86.3					276.7					0.31					0.110 4			0.002 0					5.039 0				0.130 0					0.329 3				0.003 1					0.095 3					0.003 9						1 799		33							1 825				22					1 834.0						15.0					1 839			73							100
		6			34.7					133.8					171.9					0.78					0.070 9			0.001 9					1.622 0				0.054 0					0.164 6				0.001 7					0.048 9					0.002 0						934		56							976				21					981.9						9.2					964			39							99
		7			134.6					3 035.6					1 496.1					2.03					0.051 7			0.006 9					0.310 6				0.019 8					0.043 6				0.000 7					0.014 2					0.001 1						274		118							275				15					275.0						4.0					284			22							99
		8			140.1					1 853.0					2 009.0					0.92					0.056 3			0.001 3					0.415 4				0.013 0					0.053 0				0.000 6					0.018 1					0.000 8						444		52							352				9					333.0						3.9					363			15							94
		9			40.8					237.0					249.2					0.95					0.063 6			0.001 8					1.110 0				0.036 0					0.125 4				0.001 3					0.037 9					0.001 6						694		61							755				17					761.4						7.2					752			31							99
		10			25.5					148.6					303.9					0.49					0.055 6			0.002 1					0.558 0				0.024 0					0.072 1				0.000 9					0.022 0					0.001 0						381		83							447				15					448.7						5.1					439			20							100
		11			40.2					158.3					248.8					0.64					0.065 7			0.001 9					1.204 0				0.039 0					0.132 5				0.001 3					0.040 2					0.001 7						761		62							799				18					802.0						7.4					796			33							100
		12			50.1					86.0					257.3					0.33					0.073 5			0.001 9					1.747 0				0.052 0					0.170 8				0.001 5					0.052 2					0.002 3						1 005		52							1 023				19					1 016.2						8.2					1 027			45							99
		13			8.9					60.8					166.8					0.36					0.060 4			0.004 9					0.395 0				0.032 0					0.047 7				0.000 9					0.017 4					0.001 4						480		170							337				24					300.4						5.3					348			27							89
		14			129.1					162.6					324.3					0.50					0.111 7			0.002 0					5.108 0				0.130 0					0.328 8				0.003 0					0.091 1					0.003 6						1 819		34							1 837				21					1 832.0						14.0					1 762			66							100
		15			16.6					78.4					100.8					0.78					0.064 9			0.002 6					1.177 0				0.059 0					0.129 7				0.002 0					0.040 1					0.001 8						708		86							782				27					786.0						11.0					797			35							99
		16			11.2					209.1					206.3					1.01					0.055 6			0.003 0					0.315 0				0.019 0					0.040 7				0.000 6					0.013 3					0.000 6						350		110							277				15					257.1						4.0					267			13							93
		17			51.5					212.0					324.9					0.65					0.070 7			0.002 3					1.281 0				0.058 0					0.128 5				0.002 1					0.043 4					0.002 0						931		67							835				26					779.0						12.0					858			38							93
		18			15.8					128.8					85.2					1.51					0.069 1			0.003 3					1.206 0				0.065 0					0.126 5				0.002 1					0.037 9					0.001 5						826		99							793				30					767.0						12.0					751			30							97
		19			22.6					131.0					130.1					1.01					0.066 2			0.002 5					1.219 0				0.059 0					0.132 8				0.001 7					0.042 4					0.0017						758		82							802				27					803.4						9.6					838			33							100
		20			88.1					693.0					481.6					1.44					0.067 2			0.001 7					1.179 0				0.047 0					0.126 2				0.001 6					0.037 2					0.001 4						822		53							789				21					765.9						9.1					739			28							97
		21			12.7					68.8					68.4					1.01					0.066 1			0.002 9					1.296 0				0.070 0					0.141 0				0.002 3					0.041 9					0.001 8						738		99							836				30					850.0						13.0					830			35							98
		22			8.5					51.5					50.5					1.02					0.068 8			0.003 7					1.209 0				0.071 0					0.127 8				0.002 3					0.039 8					0.001 9						780		110							796				33					775.0						13.0					788			38							97
		23			10.1					99.5					51.0					1.95					0.065 3			0.003 9					1.117 0				0.074 0					0.124 0				0.002 2					0.039 4					0.001 7						650		130							747				37					753.0						13.0					783			32							99
		24			43.4					243.7					256.5					0.95					0.065 6			0.001 8					1.196 0				0.049 0					0.132 0				0.001 7					0.041 8					0.001 6						764		59							795				22					799.3						9.6					828			31							99
		25			375.8					76.2					482.0					0.16					0.296 0			0.005 7					26.300 0				1.000 0					0.655 0				0.012 0					0.175 4					0.007 6						3 447		30							3 355				37					3 245.0						48.0					3 264			130							97
		26			28.3					189.5					149.0					1.27					0.067 8			0.002 3					1.266 0				0.059 0					0.134 9				0.002 0					0.042 0					0.001 7						827		74							825				27					815.0						11.0					831			33							99
		27			52.0					336.0					282.0					1.19					0.068 4			0.004 3					1.158 0				0.078 0					0.126 9				0.004 2					0.040 0					0.002 1						820		120							775				37					770.0						24.0					793			40							99
序号		点号			元素含量/10^-6															²³²Th/ ²³⁸U					同位素比值及误差																																				年龄值及误差/Ma																																							谐和度/%
					Pb					²³²Th					²³⁸U										²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th										²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U											²⁰⁸Pb/²³²Th
					Pb																				比值			1σ					比值				1σ					比值				1σ					比值					1σ					年龄					1σ			年龄						1σ			年龄							1σ				年龄								1σ
Ⅰ		28			17.8															100.3				95.3				1.05						0.068 9				0.002 7					1.248 0				0.062 0					0.132 3				0.002 1					0.040 7					0.001 7					824					85			817						29			801.0							12.0				805					33	98
		29			16.1					132.7					89.5					1.48					0.064 0			0.002 5					1.100 0				0.056 0					0.124 8				0.002 2					0.037 7					0.001 7					703					86			753						28			758.0							13.0				747								32			99
		30			11.5					61.3					69.8					0.88					0.064 2			0.003 1					1.145 0				0.064 0					0.130 8				0.002 2					0.039 8					0.001 9					656					100			766						31			792.0							13.0				789								37			97
		31			12.8					90.2					67.4					1.34					0.068 7			0.003 2					1.239 0				0.067 0					0.131 0				0.002 3					0.041 2					0.001 8					804					99			807						31			793.0							13.0				815								35			98
		32			29.0					12.0					306.0					0.04					0.060 7			0.002 7					0.804 0				0.043 0					0.096 6				0.001 7					0.037 8					0.005 6					588					94			596						24			594.5							9.9				750								110			100
		33			41.5					194.3					248.2					0.78					0.066 9			0.001 9					1.231 0				0.051 0					0.133 8				0.001 8					0.040 9					0.001 6					804					60			811						23			809.4							10.0				810								31			100
		34			10.2					42.6					70.8					0.60					0.067 4			0.003 2					1.218 0				0.066 0					0.132 1				0.002 3					0.040 3					0.002 0					764					100			800						31			799.0							13.0				798								40			100
		35			22.6					120.6					133.0					0.91					0.066 9			0.002 3					1.220 0				0.056 0					0.132 4				0.001 8					0.040 5					0.001 7					824					71			811						26			801.3							10.0				802								33			99
		36			11.1					52.4					66.9					0.78					0.067 8			0.003 3					1.224 0				0.070 0					0.131 8				0.002 1					0.040 9					0.001 9					771					100			802						31			798.0							12.0				809								36			100
		37			23.0					242.7					465.0					0.52					0.053 1			0.001 9					0.306 0				0.014 0					0.042 3				0.000 6					0.013 7					0.000 6					288					78			271						11			266.9							3.5				275								12			99
		38			5.3					55.4					106.5					0.52					0.052 2			0.004 1					0.309 0				0.025 0					0.043 9				0.000 8					0.013 5					0.000 9					170					150			269						20			276.6							5.1				270								18			97
		39			67.8					384.0					499.0					0.77					0.066 1			0.001 6					0.988 0				0.039 0					0.109 3				0.001 5					0.038 8					0.001 5					796					51			696						20			668.8							8.6				770								29			96
		40			17.8					115.6					99.5					1.16					0.066 9			0.005 2					1.202 0				0.096 0					0.131 8				0.002 9					0.041 7					0.002 2					740					170			798						48			798.0							16.0				825								44			100
		41			47.2					375.0					277.0					1.35					0.066 6			0.002 5					1.046 0				0.052 0					0.116 4				0.002 0					0.036 6					0.001 5					782					86			723						26			710.0							11.0				726								29			98
		42			19.6					122.5					108.7					1.13					0.067 9			0.002 5					1.249 0				0.058 0					0.134 4				0.001 9					0.040 4					0.001 7					826					76			816						26			812.8							11.0				799								34			100
		43			17.1					86.0					101.9					0.84					0.068 8			0.006 2					1.260 0				0.120 0					0.133 0				0.005 8					0.049 2					0.003 7					840					190			819						54			804.0							33.0				969								72			98
		44			9.4					105.4					192.7					0.55					0.050 8			0.002 9					0.280 0				0.018 0					0.040 7				0.000 8					0.013 1					0.000 7					150					110			248						14			257.0							4.8				263								15			96
		45			10.9					171.8					165.7					1.04					0.054 5			0.002 9					0.377 0				0.022 0					0.050 6				0.000 8					0.016 9					0.000 8					310					110			322						17			318.4							4.8				339								15			99
		46			29.8					167.8					176.5					0.95					0.068 3			0.002 3					1.208 0				0.054 0					0.128 8				0.001 9					0.037 9					0.001 6					850					70			801						25			780.5							11.0				752								31			97
		47			61.7					207.0					410.1					0.50					0.069 7			0.001 7					1.219 0				0.048 0					0.127 6				0.001 6					0.040 7					0.001 6					902					51			807						22			774.1							9.4				805								32			96
		48			23.0					107.6					136.3					0.79					0.066 0			0.002 6					1.217 0				0.061 0					0.134 5				0.001 9					0.040 3					0.001 8					753					82			800						28			814.5							11.0				798								34			98
		49			25.9					187.2					141.3					1.32					0.067 9			0.002 4					1.217 0				0.055 0					0.129 1				0.001 8					0.039 1					0.001 5					816					76			805						26			782.7							10.0				775								30			97
		50			38.6					129.6					172.2					0.75					0.075 3			0.002 6					1.819 0				0.082 0					0.177 1				0.002 6					0.052 3					0.002 2					1 035					73			1 049						29			1 051.0							14.0				1 031								42			100
		51			29.3					152.8					174.9					0.87					0.065 6			0.002 2					1.199 0				0.053 0					0.131 0				0.001 8					0.040 9					0.001 7					763					73			796						24			793.5							10.0				811								33			100
		52			17.5					103.3					97.8					1.06					0.066 6			0.002 9					1.236 0				0.063 0					0.132 4				0.002 0					0.041 6					0.001 9					779					89			809						29			801.0							11.0				824								37			99
		53			11.6					112.7					232.8					0.48					0.051 9			0.002 8					0.315 0				0.020 0					0.043 5				0.000 9					0.013 3					0.000 7					230					110			277						16			274.1							5.3				266								15			99
		54			7.8					47.0					42.4					1.11					0.062 0			0.003 9					1.169 0				0.081 0					0.135 0				0.002 4					0.042 6					0.002 2					520					130			766						37			816.0							14.0				842								43			94
		55			115.0					91.0					178.5					0.51					0.180 8			0.003 2					12.570 0				0.440 0					0.505 3				0.005 7					0.153 3					0.005 8					2 658					30			2 647						34			2 635.0							24.0				2 881								100			100
序号	点号			元素含量/10^-6														²³²Th/ ²³⁸U				同位素比值及误差																																			年龄值及误差/Ma																																												谐和度/%
				Pb				²³²Th					²³⁸U									²⁰⁷Pb/²⁰⁶Pb							²⁰⁷Pb/²³⁵U										²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb										²⁰⁷Pb/²³⁵U															²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th
				Pb				²³²Th					²³⁸U									比值				1σ			比值						1σ				比值					1σ				比值				1σ					年龄						1σ				年龄									1σ						年龄					1σ				年龄				1σ
Ⅰ	56			9.0				42.3					52.7					0.80				0.066 2				0.003 8			1.225 0						0.074 0				0.137 1					0.002 6				0.041 0				0.002 2					670						120				803									35						827.0					15.0				812				42						97
	57			23.2				111.3					130.2					0.85				0.068 3				0.002 6			1.320 0						0.064 0				0.139 5					0.002 0				0.043 2				0.001 8					824						79				846									29						841.8					11.0				855				35						100
	58			84.4				99.0					87.8					1.13				0.260 9				0.005 1			23.440 0						0.850 0				0.648 2					0.009 0				0.174 1				0.006 6					3 249						30				3 244									35						3 219.0					35.0				3 241				110						99
	59			24.5				88.4					136.9					0.65				0.067 0				0.002 2			1.349 0						0.060 0				0.146 3					0.002 1				0.046 4				0.002 0					795						71				865									27						880.0					12.0				916				38						98
	60			8.0				23.5					45.7					0.51				0.077 1				0.004 1			1.552 0						0.094 0				0.146 1					0.002 6				0.051 8				0.003 2					990						120				938									37						879.0					15.0				1 025				62						94
	61			51.1				35.0					70.0					0.50				0.207 5				0.004 2			16.240 0						0.610 0				0.562 9					0.007 6				0.156 9				0.006 5					2 881						34				2 888									35						2 880.0					31.0				2 941				110						100
	62			213.2				220.0					339.0					0.65				0.169 8				0.004 6			10.520 0						0.410 0				0.461 1					0.008 8				0.131 5				0.005 8					2 551						45				2 480									36						2 444.0					39.0				2 496				100						99
	63			36.2				277.0					207.0					1.34				0.068 9				0.005 9			1.270 0						0.110 0				0.139 1					0.004 4				0.042 7				0.002 6					850						180				826									51						839.0					25.0				844				51						98
	64			11.4				74.3					65.8					1.13				0.071 8				0.003 9			1.260 0						0.077 0				0.127 4					0.002 4				0.041 0				0.002 2					860						120				812									35						774.0					13.0				810				42						95
	65			47.8				126.8					231.0					0.55				0.081 5				0.006 4			1.700 0						0.120 0				0.161 1					0.005 4				0.057 2				0.004 2					1 190						150				1 021									59						962.0					30.0				1 123				81						94
	66			34.2				113.3					58.8					1.93				0.124 4				0.003 6			6.260 0						0.260 0				0.362 8					0.004 9				0.104 9				0.004 0					1 993						53				2 004									37						1 994.0					23.0				2 015				73						99
	67			96.9				60.9					179.6					0.34				0.158 4				0.003 2			9.690 0						0.360 0				0.437 8					0.006 8				0.127 0				0.006 2					2 433						34				2 403									35						2 339.0					31.0				2 414				110						97
	68			78.3				284.8					124.2					2.29				0.123 4				0.002 6			6.360 0						0.230 0				0.369 4					0.004 8				0.107 8				0.004 0					2 002						38				2 023									32						2 025.0					23.0				2 068				72						100
	69			126.6				84.7					197.5					0.43				0.183 0				0.003 4			12.940 0						0.450 0				0.510 3					0.006 3				0.143 8				0.005 5					2 675						30				2 675									34						2 657.0					27.0				2714				97						99
	70			14.5				83.4					88.1					0.95				0.065 4				0.002 6			1.174 0						0.060 0				0.129 3					0.001 9				0.041 7				0.001 8					718						87				781									28						783.8					11.0				825				35						100
	71			2.1				23.7					40.8					0.58				0.057 5				0.007 5			0.344 0						0.045 0				0.043 3					0.001 1				0.015 0				0.001 5					140						240				280									33						273.1					6.9				301				29						98
	72			16.3				99.7					93.5					1.07				0.066 4				0.002 6			1.189 0						0.058 0				0.129 1					0.002 0				0.043 8				0.001 8					757						87				790									28						784.0					12.0				866				36						99
	73			111.6				163.0					261.0					0.62				0.131 6				0.004 4			6.500 0						0.280 0				0.374 3					0.008 8				0.125 1				0.005 8					2 113						59				2 044									38						2 049.0					41.0				2 382				100						100
Ⅱ	1			69.2				520.0					402.0					1.29				0.070 9				0.002 8			1.258 0						0.066 0				0.131 9					0.002 8				0.044 4				0.002 0					935						82				824									30						798.0					16.0				877				38						97
	2			13.1				30.6					29.7					1.03				0.115 0				0.004 1			5.160 0						0.240 0				0.325 5					0.005 9				0.095 9				0.004 2					1 853						66				1 839									40						1 814.0					29.0				1 849				77						99
	3			15.5				42.5					29.7					1.43				0.125 8				0.004 8			6.150 0						0.290 0				0.353 6					0.005 8				0.103 0				0.004 5					1 986						70				1 981									42						1 953.0					28.0				1 980				83						99
	4			205.7				194.3					339.7					0.57				0.167 4				0.002 9			10.970 0						0.380 0				0.473 4					0.005 2				0.133 3				0.005 0					2 530						28				2 519									32						2 498.0					23.0				2 537				88						99
	5			23.7				126.9					125.5					1.01				0.067 3				0.002 4			1.324 0						0.061 0				0.142 1					0.001 9				0.044 0				0.001 8					795						79				852									27						856.4					11.0				869				35						99
	6			78.4				157.2					155.7					1.01				0.129 7				0.002 7			6.670 0						0.250 0				0.373 0					0.005 3				0.111 8				0.004 2					2 084						37				2 066									34						2 042.0					25.0				2 142				76						99
	7			108.5				148.8					175.1					0.85				0.161 7				0.003 1			10.340 0						0.370 0				0.462 4					0.005 7				0.132 6				0.005 0					2 467						32				2 463									33						2 449.0					25.0				2 515				89						99
	8			24.7				80.3					133.7					0.60				0.079 8				0.003 3			1.600 0						0.080 0				0.145 9					0.002 5				0.052 6				0.002 5					1 140						88				964									32						878.0					14.0				1 036				48						91
	9			44.8				99.2					111.9					0.89				0.133 1				0.002 9			6.750 0						0.250 0				0.369 7					0.004 6				8.000 0				16.000 0					2 132						38				2 075									33						2 027.0					22.0				2 600				1 400						98
序号		点号			元素含量/10^-6														²³²Th/ ²³⁸U				同位素比值及误差																																			年龄值及误差/Ma																																											谐和度/%
序号		点号			Pb				²³²Th					²³⁸U					²³²Th/ ²³⁸U				²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb														²⁰⁷Pb/²³⁵U								²⁰⁶Pb/²³⁸U												²⁰⁸Pb/²³²Th
																比值				1σ				比值			1σ					比值				1σ					比值			1σ						年龄					1σ									年龄	1σ							年龄							1σ					年龄					1σ
Ⅱ			10			15.8					95.9				80.9					1.19				0.066 5			0.002 8					1.295 0				0.066 0					0.141 5				0.002 0					0.046 0			0.001 9						753					92									837	30							852.9							11.0					909					37				98
			11			13.0					61.6				82.8					0.74				0.065 9			0.002 9					1.158 0				0.061 0					0.128 0				0.001 9					0.038 0			0.001 8						723					96									774	29							776.2							11.0					752					36				100
			12			141.5					91.4				229.8					0.40				0.172 5			0.003 0					11.960 0				0.420 0					0.501 9				0.005 8					0.141 3			0.005 5						2 580					30									2 598	34							2 623.0							25.0					2 676					99				99
			13			29.9					57.0				60.1					0.95				0.124 9			0.003 4					6.440 0				0.260 0					0.376 3				0.004 9					0.108 6			0.004 4						2 011					49									2 033	37							2 058.0							23.0					2 082					81				99
			14			76.0					192.0				171.7					1.12				0.113 0			0.002 6					5.102 0				0.190 0					0.329 4				0.004 2					0.100 2			0.003 8						1 834					42									1 832	32							1 835.0							20.0					1 929					69				100
			15			12.1					461.0				251.0					1.84				0.051 7			0.001 1					0.306 2				0.006 5					0.043 0				0.000 6					0.013 2			0.000 6						272					25									271	5							271.0							4.0					265					11				100
			16			97.7					53.7				159.2					0.34				0.175 1			0.005 1					12.320 0				0.750 0					0.503 0				0.017 0					0.160 2			0.007 3						2 585					50									2 589	60							2 615.0							73.0					2 998					130				99
			17			43.1					28.1				74.5					0.38				0.168 1			0.003 8					11.000 0				0.430 0					0.475 7				0.005 9					0.133 0			0.005 6						2 530					39									2 517	36							2 507.0							26.0					2 528					100				100
			18			64.3					189.7				115.2					1.65				0.125 2			0.002 8					6.360 0				0.240 0					0.369 0				0.004 8					0.104 5			0.004 0						2 020					39									2 022	32							2 026.0							23.0					2 008					72				100
			19			116.8					237.7				231.9					1.03				0.130 4			0.002 7					6.750 0				0.250 0					0.376 3				0.005 3					0.110 3			0.004 1						2 100					38									2 078	32							2 058.0							25.0					2 115					74				99
			20			49.1					341.6				243.6					1.40				0.069 3			0.002 0					1.329 0				0.055 0					0.139 2				0.001 7					0.043 0			0.001 6						879					62									855	24							839.9							9.8					851					31				98
			21			160.0					122.4				238.4					0.51				0.179 1			0.003 5					12.580 0				0.460 0					0.511 0				0.006 6					0.159 8			0.006 2						2 642					32									2 648	34							2 660.0							28.0					2 995					110				100
			22			161.8					191.9				268.0					0.72				0.165 3			0.003 0					10.620 0				0.370 0					0.467 4				0.005 8					0.129 4			0.004 8						2 506					31									2 490	33							2 471.0							25.0					2 458					85				99
			23			225.4					180.0				376.6					0.48				0.161 3			0.003 0					10.610 0				0.390 0					0.475 0				0.006 6					0.139 1			0.005 5						2 465					32									2 487	34							2 504.0							29.0					2 630					97				99
			24			133.1					110.1				235.0					0.47				0.167 6			0.003 4					10.990 0				0.290 0					0.476 8				0.005 3					0.130 4			0.005 3						2 531					31									2 519	24							2 512.0							23.0					2 482					97				100
			25			9.7					129.6				198.6					0.65				0.052 6			0.002 9					0.293 0				0.016 0					0.040 7				0.000 6					0.013 1			0.000 7						230					110									259	13							257.3							3.7					264					14				99
			26			85.9					99.7				83.2					1.20				0.264 5			0.004 8					25.150 0				0.610 0					0.690 0				0.006 4					0.181 3			0.007 2						3 268					29									3 313	23							3 381.0							25.0					3 366					120				98
			27			71.9					453.0				496.0					0.91				0.062 7			0.001 4					0.993 0				0.028 0					0.114 7				0.001 0					0.033 9			0.001 4						684					48									698	14							700.0							5.7					673					26				100
			28			17.4					10.9				30.9					0.35				0.165 4			0.004 7					10.740 0				0.340 0					0.472 3				0.006 8					0.131 6			0.007 5						2 492					47									2 491	30							2 491.0							30.0					2 490					130				100
			29			16.3					232.7				326.6					0.71				0.049 9			0.002 5					0.285 0				0.015 0					0.041 6				0.000 5					0.012 6			0.000 6						137					100									253	11							262.9							3.0					253					12				96
			30			69.7					133.5				310.0					0.43				0.083 3			0.002 0					2.336 0				0.095 0					0.201 5				0.004 3					0.063 9			0.002 9						1 258					47									1 214	30							1 184.0							23.0					1 252					55				97
			31			70.7					212.0				79.8					2.66				0.179 9			0.003 9					12.460 0				0.340 0					0.502 9				0.006 6					0.134 2			0.005 4						2 643					36									2 636	26							2 624.0							28.0					2 544					96				100
			32			67.9					316.1				699.0					0.45				0.056 3			0.001 2					0.667 0				0.018 0					0.085 7				0.000 8					0.026 6			0.001 1						448					50									518	11							529.9							4.7					531					22				98
			33			45.4					189.1				277.9					0.68				0.067 2			0.001 7					1.253 0				0.037 0					0.135 4				0.001 3					0.040 7			0.001 7						826					51									824	16							818.5							7.3					805					33				99
			34			106.8					120.2				184.1					0.65				0.168 1			0.003 8					11.210 0				0.340 0					0.480 7				0.007 9					0.130 5			0.006 2						2 534					39									2 538	28							2 529.0							34.0					2 477					110				100
			35			50.3					262.0				236.0					1.11				0.071 5			0.001 9					1.615 0				0.050 0					0.163 6				0.001 8					0.048 9			0.002 0						952					55									973	20							977.0							10.0					964					39				100
序号			点号			元素含量/10^-6														²³²Th/ ²³⁸U				同位素比值及误差																																			年龄值及误差/Ma																																									谐和度/%
						Pb					²³²Th				²³⁸U									²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb											²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U											²⁰⁸Pb/²³²Th
						Pb					²³²Th				²³⁸U									比值			1σ					比值				1σ					比值				1σ					比值				1σ					年龄					1σ						年龄				1σ					年龄					1σ						年龄						1σ
Ⅱ			36			10.2					91.8				213.7					0.43				0.052 0			0.002 8					0.306 0				0.018 0					0.042 4				0.000 6					0.013 4				0.000 8					220					110						268				14					267.5					3.5						269						16				100
			37			27.3					181.4				224.0					0.81				0.057 9			0.002 0					0.784 0				0.030 0					0.097 3				0.001 2					0.030 5				0.001 4					489					78						584				17					598.4					6.9						607						27				98
			38			28.9					63.8				36.7					1.74				0.179 4			0.004 5					12.820 0				0.380 0					0.516 6				0.006 6					0.139 6				0.005 9					2 629					42						2 660				28					2 682.0					28.0						2 639						100				99
			39			116.3					790.0				169.0					4.67				0.182 2			0.003 7					12.330 0				0.330 0					0.489 3				0.007 3					0.029 9				0.001 4					2 671					35						2 627				25					2 566.0					32.0						596						28				98
			40			13.0					82.6				74.7					1.11				0.066 1			0.003 1					1.191 0				0.056 0					0.131 0				0.001 9					0.040 0				0.001 9					733					98						789				26					793.0					11.0						793						37				99
			41			55.6					141.1				156.9					0.90				0.097 0			0.002 2					3.682 0				0.100 0					0.274 1				0.002 8					0.078 6				0.003 2					1 551					42						1 563				22					1 561.0					14.0						1 529						60				100
			42			571.6					114.9				811.0					0.14				0.239 1			0.004 0					18.730 0				0.470 0					0.565 2				0.007 0					0.127 7				0.009 0					3 112					27						3 026				25					2 887.0					29.0						2 420						160				95
			43			26.1					40.5				38.6					1.05				0.164 1			0.004 1					11.010 0				0.350 0					0.485 8				0.007 3					0.130 3				0.006 1					2 485					41						2 518				30					2 554.0					32.0						2 471						110				99
			44			26.3					104.6				28.0					3.74				0.156 8			0.004 8					9.640 0				0.340 0					0.446 5				0.006 8					0.125 2				0.005 2					2 391					53						2 391				33					2 377.0					30.0						2 383						93				99
			45			293.3					280.4				650.0					0.43				0.131 0			0.002 1					6.931 0				0.170 0					0.383 6				0.003 6					0.111 4				0.004 3					2 107					28						2 102				22					2 092.0					17.0						2 135						78				100
			46			21.8					187.6				107.1					1.75				0.065 3			0.002 4					1.229 0				0.049 0					0.136 5				0.001 6					0.039 5				0.001 6					729					81						807				22					824.4					9.0						783						32				98
			47			155.9					146.4				405.5					0.36				0.114 3			0.002 0					5.241 0				0.130 0					0.332 8				0.003 2					0.094 2				0.003 8					1 866					31						1 859				2 0					1 851.0					15.0						1 818						71				100
			48			11.2					118.0				205.0					0.58				0.052 1			0.002 4					0.316 7				0.013 9					0.044 3				0.000 8					0.021 5				0.003 3					288					67						279				11					279.0					5.0						430						66				100
			49			137.3					4 240.0				1 431.0					2.96				0.062 2			0.001 7					0.544 0				0.020 0					0.063 4				0.001 3					0.012 9				0.000 8					669					61						439				13					396.4					7.6						258						15				90
			50			21.1					130.4				113.5					1.15				0.064 2			0.003 4					1.187 0				0.065 0					0.134 2				0.002 2					0.040 7				0.001 9					660					110						785				30					811.0					13.0						807						36				97
			51			3.1					29.7				52.8					0.56				0.058 4			0.005 7					0.390 0				0.039 0					0.049 9				0.001 1					0.014 9				0.001 3					270					190						323				29					313.6					6.9						299						26				97
			52			53.7					420.0				271.0					1.55				0.067 2			0.002 4					1.264 0				0.061 0					0.136 1				0.002 1					0.040 9				0.001 6					798					78						823				27					822.0					12.0						810						32				100
			53			30.3					375.3				581.0					0.65				0.052 3			0.001 8					0.309 0				0.014 0					0.043 1				0.000 6					0.013 4				0.000 6					263					74						273				11					271.7					3.5						269						11				100
			54			57.4					135.6				108.0					1.26				0.125 3			0.002 9					6.520 0				0.250 0					0.377 8				0.004 5					0.103 7				0.004 0					2 025					43						2 046				35					2 065.0					21.0						1 994						73				99
			55			201.3					346.0				508.0					0.68				0.116 6			0.002 7					4.940 0				0.200 0					0.314 8				0.005 5					0.065 8				0.003 1					1 897					42						1 807				33					1 764.0					27.0						1 287						59				98
			56			27.5					99.4				130.9					0.76				0.075 0			0.002 4					1.688 0				0.073 0					0.164 3				0.002 4					0.049 9				0.002 1					1 027					65						998				28					980.0					13.0						983						41				98
			57			17.0					74.0				96.1					0.77				0.064 6			0.002 5					1.253 0				0.061 0					0.141 3				0.002 1					0.042 5				0.002 0					715					83						822				27					852.0					12.0						841						38				96
			58			144.2					81.0				392.0					0.21				0.114 3			0.002 1					5.271 0				0.190 0					0.337 1				0.003 8					0.091 6				0.003 6					1 862					33						1 862				30					1 872.0					18.0						1 771						66				99
			59			8.5					75.6				162.0					0.47				0.052 0			0.003 3					0.330 0				0.022 0					0.046 5				0.000 8					0.013 4				0.000 8					200					130						286				17					293.0					5.0						268						16				98
			60			60.1					51.1				94.9					0.54				0.175 0			0.003 7					11.970 0				0.440 0					0.500 1				0.006 5					0.138 5				0.005 7					2 600					35						2 598				35					2 612.0					28.0						2 625						99				99
			61			33.6					43.7				51.8					0.84				0.167 9			0.004 3					11.050 0				0.440 0					0.480 0				0.006 8					0.134 5				0.005 8					2 524					43						2 523				36					2 526.0					29.0						2 546						100				100
序号			点号			元素含量/10^-6											²³²Th/ ²³⁸U				同位素比值及误差																																							年龄值及误差/Ma																																											谐和度/%
						Pb	²³²Th					²³⁸U									²⁰⁷Pb/²⁰⁶Pb									²⁰⁷Pb/²³⁵U								²⁰⁶Pb/²³⁸U													²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U															²⁰⁶Pb/²³⁸U										²⁰⁸Pb/²³²Th
						Pb	²³²Th					²³⁸U									比值					1σ				比值				1σ				比值					1σ								比值				1σ					年龄				1σ				年龄									1σ						年龄					1σ					年龄						1σ
Ⅲ			1			8.4	84.5					161.3					0.52				0.057 2					0.003 6				0.328 0				0.017 5				0.042 5					0.000 8				0.013 8								0.000 6					502				132				288									13						268.3					5.1					277						13				92
			2			15.1	214.6					294.2					0.73				0.054 7					0.002 6				0.318 3				0.015 1				0.042 1					0.000 8				0.013 0								0.000 6					467				103				281									12						266.1					5.2					262						12				94
			3			8.1	79.3					167.0					0.48				0.053 6					0.002 8				0.296 0				0.015 2				0.040 5					0.000 8				0.012 7								0.000 5					354				123				263									12						255.9					4.6					254						10				97
			4			7.2	83.3					135.3					0.62				0.058 1					0.003 4				0.332 6				0.016 9				0.042 2					0.000 9				0.013 9								0.000 6					600				95				292									13						266.5					5.3					280						12				91
			5			9.2	107.8					178.1					0.61				0.051 7					0.002 7				0.297 3				0.015 1				0.041 9					0.000 7				0.013 1								0.000 5					272				120				264									12						264.4					4.4					262						9				99
			6			10.6	140.8					208.4					0.68				0.051 8					0.002 2				0.287 5				0.011 2				0.040 4					0.000 7				0.013 1								0.000 5					280				92				257									9						255.5					4.1					263						10				99
			7			7.1	91.3					161.9					0.56				0.050 1					0.002 8				0.276 7				0.015 0				0.040 3					0.000 9				0.012 9								0.000 6					211				130				248									12						254.9					5.5					259						11				97
			8			16.4	160.2					330.0					0.49				0.053 4					0.002 3				0.304 4				0.012 3				0.041 8					0.000 7				0.013 7								0.000 5					346				92				270									10						263.7					4.3					275						11				97
			9			26.8	383.8					504.6					0.76				0.053 5					0.001 6				0.307 3				0.008 7				0.041 7					0.000 5				0.013 7								0.000 4					350				67				272									7						263.2					3.3					274						7				96
			10			7.9	83.6					152.0					0.55				0.052 0					0.003 0				0.305 2				0.017 7				0.042 5					0.000 8				0.014 9								0.000 7					283				135				270									14						268.4					5.1					300						14				99
			11			6.5	61.2					129.9					0.47				0.053 9					0.002 8				0.308 3				0.014 9				0.041 9					0.000 8				0.012 9								0.000 6					365				112				273									12						264.7					4.7					260						12				96
			12			7.1	62.5					141.8					0.44				0.056 1					0.003 9				0.325 3				0.020 3				0.042 5					0.000 8				0.013 0								0.000 6					454				158				286									16						268.1					5.2					261						12				93
			13			21.0	245.9					400.4					0.61				0.050 9					0.001 9				0.293 8				0.010 7				0.041 9					0.000 6				0.014 2								0.000 4					239				85				262									8						264.6					3.8					285						8				98
			14			12.4	141.1					243.3					0.58				0.054 7					0.002 6				0.304 2				0.014 2				0.040 4					0.000 7				0.013 7								0.000 6					467				103				270									11						255.4					4.3					275						13				94
			15			16.1	193.7					302.6					0.64				0.048 2					0.001 8				0.280 6				0.010 7				0.042 1					0.000 6				0.013 8								0.000 5					109				89				251									8						265.6					3.9					276						10				94
			16			6.1	75.5					115.2					0.66				0.055 0					0.003 2				0.302 9				0.016 0				0.040 7					0.000 8				0.015 1								0.000 7					413				130				269									12						257.0					4.8					304						14				95
			17			6.2	60.7					123.7					0.49				0.053 0					0.003 7				0.298 4				0.020 7				0.041 0					0.000 9				0.014 6								0.000 9					328				159				265									16						259.0					5.8					292						17				97
			18			7.2	73.2					147.1					0.50				0.051 1					0.002 6				0.280 1				0.014 3				0.040 3					0.000 7				0.014 0								0.000 6					256				119				251									11						254.4					4.6					281						12				98
			19			9.1	91.2					183.1					0.50				0.054 1					0.002 6				0.301 5				0.013 5				0.040 8					0.000 9				0.014 2								0.000 6					376				106				268									11						258.0					5.3					285						12				96
			20			28.8	366.3					550.4					0.67				0.048 0					0.001 8				0.276 9				0.010 6				0.041 9					0.000 7				0.013 6								0.000 5					98				89				248									8						264.3					4.5					274						10				93
Ⅳ			1			9.5	108.9					184.3					0.59				0.050 4					0.002 5				0.287 1				0.014 1				0.041 3					0.000 7				0.012 9								0.000 5					213				112				256									11						261.1					4.2					259						11				98
			2			7.7	81.6					151.0					0.54				0.050 0					0.002 9				0.282 5				0.015 0				0.041 6					0.000 8				0.013 4								0.000 6					198				135				253									12						262.7					4.9					268						11				96
			3			7.5	88.8					140.0					0.63				0.050 4					0.003 9				0.284 9				0.021 0				0.041 5					0.000 9				0.011 8								0.000 7					217				177				255									17						262.2					5.4					238						13				97
			4			6.9	67.3					136.7					0.49				0.057 1					0.003 6				0.327 5				0.019 7				0.042 0					0.000 8				0.014 0								0.000 6					494				141				288									15						265.5					5.1					281						13				91
			5			16.5	196.9					323.1					0.61				0.055 8					0.002 2				0.318 4				0.012 1				0.041 4					0.000 7				0.013 7								0.000 4					443				87				281									9						261.6					4.0					276						8				92
			6			7.1	83.4					142.4					0.59				0.054 9					0.003 0				0.306 1				0.015 7				0.040 9					0.000 8				0.012 5								0.000 5					406				122				271									12						258.6					4.8					251						10				95

序号		点号			元素含量/10^-6															²³²Th/ ²³⁸U					同位素比值及误差																																					年龄值及误差/Ma																																							谐和度/%
					Pb					²³²Th					²³⁸U										²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th											²⁰⁷Pb/²⁰⁶Pb									²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U											²⁰⁸Pb/²³²Th
					Pb					²³²Th					²³⁸U										比值			1σ					比值				1σ					比值				1σ					比值					1σ						年龄		1σ							年龄				1σ					年龄						1σ					年龄			1σ
Ⅰ		1			6.8					38.1					39.6					0.96					0.065 1			0.003 9					1.181 0				0.070 0					0.132 7				0.002 5					0.038 7					0.002 3						660		120							782				33					802.0						14.0					767			44							97
		2			44.5					145.2					218.3					0.67					0.070 1			0.001 9					1.585 0				0.052 0					0.162 7				0.001 6					0.048 2					0.002 0						921		54							964				19					971.4						8.9					950			39							99
		3			191.3					1 036.0					833.0					1.24					0.070 8			0.001 3					1.613 0				0.041 0					0.163 8				0.001 3					0.048 6					0.001 9						943		38							974				16					977.5						7.2					959			36							100
		4			103.6					206.9					281.0					0.74					0.100 1			0.001 9					4.064 0				0.100 0					0.291 7				0.002 4					0.087 6					0.003 5						1 621		35							1 645				21					1 651.0						12.0					1 697			65							100
		5			106.0					86.3					276.7					0.31					0.110 4			0.002 0					5.039 0				0.130 0					0.329 3				0.003 1					0.095 3					0.003 9						1 799		33							1 825				22					1 834.0						15.0					1 839			73							100
		6			34.7					133.8					171.9					0.78					0.070 9			0.001 9					1.622 0				0.054 0					0.164 6				0.001 7					0.048 9					0.002 0						934		56							976				21					981.9						9.2					964			39							99
		7			134.6					3 035.6					1 496.1					2.03					0.051 7			0.006 9					0.310 6				0.019 8					0.043 6				0.000 7					0.014 2					0.001 1						274		118							275				15					275.0						4.0					284			22							99
		8			140.1					1 853.0					2 009.0					0.92					0.056 3			0.001 3					0.415 4				0.013 0					0.053 0				0.000 6					0.018 1					0.000 8						444		52							352				9					333.0						3.9					363			15							94
		9			40.8					237.0					249.2					0.95					0.063 6			0.001 8					1.110 0				0.036 0					0.125 4				0.001 3					0.037 9					0.001 6						694		61							755				17					761.4						7.2					752			31							99
		10			25.5					148.6					303.9					0.49					0.055 6			0.002 1					0.558 0				0.024 0					0.072 1				0.000 9					0.022 0					0.001 0						381		83							447				15					448.7						5.1					439			20							100
		11			40.2					158.3					248.8					0.64					0.065 7			0.001 9					1.204 0				0.039 0					0.132 5				0.001 3					0.040 2					0.001 7						761		62							799				18					802.0						7.4					796			33							100
		12			50.1					86.0					257.3					0.33					0.073 5			0.001 9					1.747 0				0.052 0					0.170 8				0.001 5					0.052 2					0.002 3						1 005		52							1 023				19					1 016.2						8.2					1 027			45							99
		13			8.9					60.8					166.8					0.36					0.060 4			0.004 9					0.395 0				0.032 0					0.047 7				0.000 9					0.017 4					0.001 4						480		170							337				24					300.4						5.3					348			27							89
		14			129.1					162.6					324.3					0.50					0.111 7			0.002 0					5.108 0				0.130 0					0.328 8				0.003 0					0.091 1					0.003 6						1 819		34							1 837				21					1 832.0						14.0					1 762			66							100
		15			16.6					78.4					100.8					0.78					0.064 9			0.002 6					1.177 0				0.059 0					0.129 7				0.002 0					0.040 1					0.001 8						708		86							782				27					786.0						11.0					797			35							99
		16			11.2					209.1					206.3					1.01					0.055 6			0.003 0					0.315 0				0.019 0					0.040 7				0.000 6					0.013 3					0.000 6						350		110							277				15					257.1						4.0					267			13							93
		17			51.5					212.0					324.9					0.65					0.070 7			0.002 3					1.281 0				0.058 0					0.128 5				0.002 1					0.043 4					0.002 0						931		67							835				26					779.0						12.0					858			38							93
		18			15.8					128.8					85.2					1.51					0.069 1			0.003 3					1.206 0				0.065 0					0.126 5				0.002 1					0.037 9					0.001 5						826		99							793				30					767.0						12.0					751			30							97
		19			22.6					131.0					130.1					1.01					0.066 2			0.002 5					1.219 0				0.059 0					0.132 8				0.001 7					0.042 4					0.0017						758		82							802				27					803.4						9.6					838			33							100
		20			88.1					693.0					481.6					1.44					0.067 2			0.001 7					1.179 0				0.047 0					0.126 2				0.001 6					0.037 2					0.001 4						822		53							789				21					765.9						9.1					739			28							97
		21			12.7					68.8					68.4					1.01					0.066 1			0.002 9					1.296 0				0.070 0					0.141 0				0.002 3					0.041 9					0.001 8						738		99							836				30					850.0						13.0					830			35							98
		22			8.5					51.5					50.5					1.02					0.068 8			0.003 7					1.209 0				0.071 0					0.127 8				0.002 3					0.039 8					0.001 9						780		110							796				33					775.0						13.0					788			38							97
		23			10.1					99.5					51.0					1.95					0.065 3			0.003 9					1.117 0				0.074 0					0.124 0				0.002 2					0.039 4					0.001 7						650		130							747				37					753.0						13.0					783			32							99
		24			43.4					243.7					256.5					0.95					0.065 6			0.001 8					1.196 0				0.049 0					0.132 0				0.001 7					0.041 8					0.001 6						764		59							795				22					799.3						9.6					828			31							99
		25			375.8					76.2					482.0					0.16					0.296 0			0.005 7					26.300 0				1.000 0					0.655 0				0.012 0					0.175 4					0.007 6						3 447		30							3 355				37					3 245.0						48.0					3 264			130							97
		26			28.3					189.5					149.0					1.27					0.067 8			0.002 3					1.266 0				0.059 0					0.134 9				0.002 0					0.042 0					0.001 7						827		74							825				27					815.0						11.0					831			33							99
		27			52.0					336.0					282.0					1.19					0.068 4			0.004 3					1.158 0				0.078 0					0.126 9				0.004 2					0.040 0					0.002 1						820		120							775				37					770.0						24.0					793			40							99
序号		点号			元素含量/10^-6															²³²Th/ ²³⁸U					同位素比值及误差																																				年龄值及误差/Ma																																							谐和度/%
					Pb					²³²Th					²³⁸U										²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th										²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U											²⁰⁸Pb/²³²Th
					Pb																				比值			1σ					比值				1σ					比值				1σ					比值					1σ					年龄					1σ			年龄						1σ			年龄							1σ				年龄								1σ
Ⅰ		28			17.8															100.3				95.3				1.05						0.068 9				0.002 7					1.248 0				0.062 0					0.132 3				0.002 1					0.040 7					0.001 7					824					85			817						29			801.0							12.0				805					33	98
		29			16.1					132.7					89.5					1.48					0.064 0			0.002 5					1.100 0				0.056 0					0.124 8				0.002 2					0.037 7					0.001 7					703					86			753						28			758.0							13.0				747								32			99
		30			11.5					61.3					69.8					0.88					0.064 2			0.003 1					1.145 0				0.064 0					0.130 8				0.002 2					0.039 8					0.001 9					656					100			766						31			792.0							13.0				789								37			97
		31			12.8					90.2					67.4					1.34					0.068 7			0.003 2					1.239 0				0.067 0					0.131 0				0.002 3					0.041 2					0.001 8					804					99			807						31			793.0							13.0				815								35			98
		32			29.0					12.0					306.0					0.04					0.060 7			0.002 7					0.804 0				0.043 0					0.096 6				0.001 7					0.037 8					0.005 6					588					94			596						24			594.5							9.9				750								110			100
		33			41.5					194.3					248.2					0.78					0.066 9			0.001 9					1.231 0				0.051 0					0.133 8				0.001 8					0.040 9					0.001 6					804					60			811						23			809.4							10.0				810								31			100
		34			10.2					42.6					70.8					0.60					0.067 4			0.003 2					1.218 0				0.066 0					0.132 1				0.002 3					0.040 3					0.002 0					764					100			800						31			799.0							13.0				798								40			100
		35			22.6					120.6					133.0					0.91					0.066 9			0.002 3					1.220 0				0.056 0					0.132 4				0.001 8					0.040 5					0.001 7					824					71			811						26			801.3							10.0				802								33			99
		36			11.1					52.4					66.9					0.78					0.067 8			0.003 3					1.224 0				0.070 0					0.131 8				0.002 1					0.040 9					0.001 9					771					100			802						31			798.0							12.0				809								36			100
		37			23.0					242.7					465.0					0.52					0.053 1			0.001 9					0.306 0				0.014 0					0.042 3				0.000 6					0.013 7					0.000 6					288					78			271						11			266.9							3.5				275								12			99
		38			5.3					55.4					106.5					0.52					0.052 2			0.004 1					0.309 0				0.025 0					0.043 9				0.000 8					0.013 5					0.000 9					170					150			269						20			276.6							5.1				270								18			97
		39			67.8					384.0					499.0					0.77					0.066 1			0.001 6					0.988 0				0.039 0					0.109 3				0.001 5					0.038 8					0.001 5					796					51			696						20			668.8							8.6				770								29			96
		40			17.8					115.6					99.5					1.16					0.066 9			0.005 2					1.202 0				0.096 0					0.131 8				0.002 9					0.041 7					0.002 2					740					170			798						48			798.0							16.0				825								44			100
		41			47.2					375.0					277.0					1.35					0.066 6			0.002 5					1.046 0				0.052 0					0.116 4				0.002 0					0.036 6					0.001 5					782					86			723						26			710.0							11.0				726								29			98
		42			19.6					122.5					108.7					1.13					0.067 9			0.002 5					1.249 0				0.058 0					0.134 4				0.001 9					0.040 4					0.001 7					826					76			816						26			812.8							11.0				799								34			100
		43			17.1					86.0					101.9					0.84					0.068 8			0.006 2					1.260 0				0.120 0					0.133 0				0.005 8					0.049 2					0.003 7					840					190			819						54			804.0							33.0				969								72			98
		44			9.4					105.4					192.7					0.55					0.050 8			0.002 9					0.280 0				0.018 0					0.040 7				0.000 8					0.013 1					0.000 7					150					110			248						14			257.0							4.8				263								15			96
		45			10.9					171.8					165.7					1.04					0.054 5			0.002 9					0.377 0				0.022 0					0.050 6				0.000 8					0.016 9					0.000 8					310					110			322						17			318.4							4.8				339								15			99
		46			29.8					167.8					176.5					0.95					0.068 3			0.002 3					1.208 0				0.054 0					0.128 8				0.001 9					0.037 9					0.001 6					850					70			801						25			780.5							11.0				752								31			97
		47			61.7					207.0					410.1					0.50					0.069 7			0.001 7					1.219 0				0.048 0					0.127 6				0.001 6					0.040 7					0.001 6					902					51			807						22			774.1							9.4				805								32			96
		48			23.0					107.6					136.3					0.79					0.066 0			0.002 6					1.217 0				0.061 0					0.134 5				0.001 9					0.040 3					0.001 8					753					82			800						28			814.5							11.0				798								34			98
		49			25.9					187.2					141.3					1.32					0.067 9			0.002 4					1.217 0				0.055 0					0.129 1				0.001 8					0.039 1					0.001 5					816					76			805						26			782.7							10.0				775								30			97
		50			38.6					129.6					172.2					0.75					0.075 3			0.002 6					1.819 0				0.082 0					0.177 1				0.002 6					0.052 3					0.002 2					1 035					73			1 049						29			1 051.0							14.0				1 031								42			100
		51			29.3					152.8					174.9					0.87					0.065 6			0.002 2					1.199 0				0.053 0					0.131 0				0.001 8					0.040 9					0.001 7					763					73			796						24			793.5							10.0				811								33			100
		52			17.5					103.3					97.8					1.06					0.066 6			0.002 9					1.236 0				0.063 0					0.132 4				0.002 0					0.041 6					0.001 9					779					89			809						29			801.0							11.0				824								37			99
		53			11.6					112.7					232.8					0.48					0.051 9			0.002 8					0.315 0				0.020 0					0.043 5				0.000 9					0.013 3					0.000 7					230					110			277						16			274.1							5.3				266								15			99
		54			7.8					47.0					42.4					1.11					0.062 0			0.003 9					1.169 0				0.081 0					0.135 0				0.002 4					0.042 6					0.002 2					520					130			766						37			816.0							14.0				842								43			94
		55			115.0					91.0					178.5					0.51					0.180 8			0.003 2					12.570 0				0.440 0					0.505 3				0.005 7					0.153 3					0.005 8					2 658					30			2 647						34			2 635.0							24.0				2 881								100			100
序号	点号			元素含量/10^-6														²³²Th/ ²³⁸U				同位素比值及误差																																			年龄值及误差/Ma																																												谐和度/%
				Pb				²³²Th					²³⁸U									²⁰⁷Pb/²⁰⁶Pb							²⁰⁷Pb/²³⁵U										²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb										²⁰⁷Pb/²³⁵U															²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th
				Pb				²³²Th					²³⁸U									比值				1σ			比值						1σ				比值					1σ				比值				1σ					年龄						1σ				年龄									1σ						年龄					1σ				年龄				1σ
Ⅰ	56			9.0				42.3					52.7					0.80				0.066 2				0.003 8			1.225 0						0.074 0				0.137 1					0.002 6				0.041 0				0.002 2					670						120				803									35						827.0					15.0				812				42						97
	57			23.2				111.3					130.2					0.85				0.068 3				0.002 6			1.320 0						0.064 0				0.139 5					0.002 0				0.043 2				0.001 8					824						79				846									29						841.8					11.0				855				35						100
	58			84.4				99.0					87.8					1.13				0.260 9				0.005 1			23.440 0						0.850 0				0.648 2					0.009 0				0.174 1				0.006 6					3 249						30				3 244									35						3 219.0					35.0				3 241				110						99
	59			24.5				88.4					136.9					0.65				0.067 0				0.002 2			1.349 0						0.060 0				0.146 3					0.002 1				0.046 4				0.002 0					795						71				865									27						880.0					12.0				916				38						98
	60			8.0				23.5					45.7					0.51				0.077 1				0.004 1			1.552 0						0.094 0				0.146 1					0.002 6				0.051 8				0.003 2					990						120				938									37						879.0					15.0				1 025				62						94
	61			51.1				35.0					70.0					0.50				0.207 5				0.004 2			16.240 0						0.610 0				0.562 9					0.007 6				0.156 9				0.006 5					2 881						34				2 888									35						2 880.0					31.0				2 941				110						100
	62			213.2				220.0					339.0					0.65				0.169 8				0.004 6			10.520 0						0.410 0				0.461 1					0.008 8				0.131 5				0.005 8					2 551						45				2 480									36						2 444.0					39.0				2 496				100						99
	63			36.2				277.0					207.0					1.34				0.068 9				0.005 9			1.270 0						0.110 0				0.139 1					0.004 4				0.042 7				0.002 6					850						180				826									51						839.0					25.0				844				51						98
	64			11.4				74.3					65.8					1.13				0.071 8				0.003 9			1.260 0						0.077 0				0.127 4					0.002 4				0.041 0				0.002 2					860						120				812									35						774.0					13.0				810				42						95
	65			47.8				126.8					231.0					0.55				0.081 5				0.006 4			1.700 0						0.120 0				0.161 1					0.005 4				0.057 2				0.004 2					1 190						150				1 021									59						962.0					30.0				1 123				81						94
	66			34.2				113.3					58.8					1.93				0.124 4				0.003 6			6.260 0						0.260 0				0.362 8					0.004 9				0.104 9				0.004 0					1 993						53				2 004									37						1 994.0					23.0				2 015				73						99
	67			96.9				60.9					179.6					0.34				0.158 4				0.003 2			9.690 0						0.360 0				0.437 8					0.006 8				0.127 0				0.006 2					2 433						34				2 403									35						2 339.0					31.0				2 414				110						97
	68			78.3				284.8					124.2					2.29				0.123 4				0.002 6			6.360 0						0.230 0				0.369 4					0.004 8				0.107 8				0.004 0					2 002						38				2 023									32						2 025.0					23.0				2 068				72						100
	69			126.6				84.7					197.5					0.43				0.183 0				0.003 4			12.940 0						0.450 0				0.510 3					0.006 3				0.143 8				0.005 5					2 675						30				2 675									34						2 657.0					27.0				2714				97						99
	70			14.5				83.4					88.1					0.95				0.065 4				0.002 6			1.174 0						0.060 0				0.129 3					0.001 9				0.041 7				0.001 8					718						87				781									28						783.8					11.0				825				35						100
	71			2.1				23.7					40.8					0.58				0.057 5				0.007 5			0.344 0						0.045 0				0.043 3					0.001 1				0.015 0				0.001 5					140						240				280									33						273.1					6.9				301				29						98
	72			16.3				99.7					93.5					1.07				0.066 4				0.002 6			1.189 0						0.058 0				0.129 1					0.002 0				0.043 8				0.001 8					757						87				790									28						784.0					12.0				866				36						99
	73			111.6				163.0					261.0					0.62				0.131 6				0.004 4			6.500 0						0.280 0				0.374 3					0.008 8				0.125 1				0.005 8					2 113						59				2 044									38						2 049.0					41.0				2 382				100						100
Ⅱ	1			69.2				520.0					402.0					1.29				0.070 9				0.002 8			1.258 0						0.066 0				0.131 9					0.002 8				0.044 4				0.002 0					935						82				824									30						798.0					16.0				877				38						97
	2			13.1				30.6					29.7					1.03				0.115 0				0.004 1			5.160 0						0.240 0				0.325 5					0.005 9				0.095 9				0.004 2					1 853						66				1 839									40						1 814.0					29.0				1 849				77						99
	3			15.5				42.5					29.7					1.43				0.125 8				0.004 8			6.150 0						0.290 0				0.353 6					0.005 8				0.103 0				0.004 5					1 986						70				1 981									42						1 953.0					28.0				1 980				83						99
	4			205.7				194.3					339.7					0.57				0.167 4				0.002 9			10.970 0						0.380 0				0.473 4					0.005 2				0.133 3				0.005 0					2 530						28				2 519									32						2 498.0					23.0				2 537				88						99
	5			23.7				126.9					125.5					1.01				0.067 3				0.002 4			1.324 0						0.061 0				0.142 1					0.001 9				0.044 0				0.001 8					795						79				852									27						856.4					11.0				869				35						99
	6			78.4				157.2					155.7					1.01				0.129 7				0.002 7			6.670 0						0.250 0				0.373 0					0.005 3				0.111 8				0.004 2					2 084						37				2 066									34						2 042.0					25.0				2 142				76						99
	7			108.5				148.8					175.1					0.85				0.161 7				0.003 1			10.340 0						0.370 0				0.462 4					0.005 7				0.132 6				0.005 0					2 467						32				2 463									33						2 449.0					25.0				2 515				89						99
	8			24.7				80.3					133.7					0.60				0.079 8				0.003 3			1.600 0						0.080 0				0.145 9					0.002 5				0.052 6				0.002 5					1 140						88				964									32						878.0					14.0				1 036				48						91
	9			44.8				99.2					111.9					0.89				0.133 1				0.002 9			6.750 0						0.250 0				0.369 7					0.004 6				8.000 0				16.000 0					2 132						38				2 075									33						2 027.0					22.0				2 600				1 400						98
序号		点号			元素含量/10^-6														²³²Th/ ²³⁸U				同位素比值及误差																																			年龄值及误差/Ma																																											谐和度/%
序号		点号			Pb				²³²Th					²³⁸U					²³²Th/ ²³⁸U				²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb														²⁰⁷Pb/²³⁵U								²⁰⁶Pb/²³⁸U												²⁰⁸Pb/²³²Th
																比值				1σ				比值			1σ					比值				1σ					比值			1σ						年龄					1σ									年龄	1σ							年龄							1σ					年龄					1σ
Ⅱ			10			15.8					95.9				80.9					1.19				0.066 5			0.002 8					1.295 0				0.066 0					0.141 5				0.002 0					0.046 0			0.001 9						753					92									837	30							852.9							11.0					909					37				98
			11			13.0					61.6				82.8					0.74				0.065 9			0.002 9					1.158 0				0.061 0					0.128 0				0.001 9					0.038 0			0.001 8						723					96									774	29							776.2							11.0					752					36				100
			12			141.5					91.4				229.8					0.40				0.172 5			0.003 0					11.960 0				0.420 0					0.501 9				0.005 8					0.141 3			0.005 5						2 580					30									2 598	34							2 623.0							25.0					2 676					99				99
			13			29.9					57.0				60.1					0.95				0.124 9			0.003 4					6.440 0				0.260 0					0.376 3				0.004 9					0.108 6			0.004 4						2 011					49									2 033	37							2 058.0							23.0					2 082					81				99
			14			76.0					192.0				171.7					1.12				0.113 0			0.002 6					5.102 0				0.190 0					0.329 4				0.004 2					0.100 2			0.003 8						1 834					42									1 832	32							1 835.0							20.0					1 929					69				100
			15			12.1					461.0				251.0					1.84				0.051 7			0.001 1					0.306 2				0.006 5					0.043 0				0.000 6					0.013 2			0.000 6						272					25									271	5							271.0							4.0					265					11				100
			16			97.7					53.7				159.2					0.34				0.175 1			0.005 1					12.320 0				0.750 0					0.503 0				0.017 0					0.160 2			0.007 3						2 585					50									2 589	60							2 615.0							73.0					2 998					130				99
			17			43.1					28.1				74.5					0.38				0.168 1			0.003 8					11.000 0				0.430 0					0.475 7				0.005 9					0.133 0			0.005 6						2 530					39									2 517	36							2 507.0							26.0					2 528					100				100
			18			64.3					189.7				115.2					1.65				0.125 2			0.002 8					6.360 0				0.240 0					0.369 0				0.004 8					0.104 5			0.004 0						2 020					39									2 022	32							2 026.0							23.0					2 008					72				100
			19			116.8					237.7				231.9					1.03				0.130 4			0.002 7					6.750 0				0.250 0					0.376 3				0.005 3					0.110 3			0.004 1						2 100					38									2 078	32							2 058.0							25.0					2 115					74				99
			20			49.1					341.6				243.6					1.40				0.069 3			0.002 0					1.329 0				0.055 0					0.139 2				0.001 7					0.043 0			0.001 6						879					62									855	24							839.9							9.8					851					31				98
			21			160.0					122.4				238.4					0.51				0.179 1			0.003 5					12.580 0				0.460 0					0.511 0				0.006 6					0.159 8			0.006 2						2 642					32									2 648	34							2 660.0							28.0					2 995					110				100
			22			161.8					191.9				268.0					0.72				0.165 3			0.003 0					10.620 0				0.370 0					0.467 4				0.005 8					0.129 4			0.004 8						2 506					31									2 490	33							2 471.0							25.0					2 458					85				99
			23			225.4					180.0				376.6					0.48				0.161 3			0.003 0					10.610 0				0.390 0					0.475 0				0.006 6					0.139 1			0.005 5						2 465					32									2 487	34							2 504.0							29.0					2 630					97				99
			24			133.1					110.1				235.0					0.47				0.167 6			0.003 4					10.990 0				0.290 0					0.476 8				0.005 3					0.130 4			0.005 3						2 531					31									2 519	24							2 512.0							23.0					2 482					97				100
			25			9.7					129.6				198.6					0.65				0.052 6			0.002 9					0.293 0				0.016 0					0.040 7				0.000 6					0.013 1			0.000 7						230					110									259	13							257.3							3.7					264					14				99
			26			85.9					99.7				83.2					1.20				0.264 5			0.004 8					25.150 0				0.610 0					0.690 0				0.006 4					0.181 3			0.007 2						3 268					29									3 313	23							3 381.0							25.0					3 366					120				98
			27			71.9					453.0				496.0					0.91				0.062 7			0.001 4					0.993 0				0.028 0					0.114 7				0.001 0					0.033 9			0.001 4						684					48									698	14							700.0							5.7					673					26				100
			28			17.4					10.9				30.9					0.35				0.165 4			0.004 7					10.740 0				0.340 0					0.472 3				0.006 8					0.131 6			0.007 5						2 492					47									2 491	30							2 491.0							30.0					2 490					130				100
			29			16.3					232.7				326.6					0.71				0.049 9			0.002 5					0.285 0				0.015 0					0.041 6				0.000 5					0.012 6			0.000 6						137					100									253	11							262.9							3.0					253					12				96
			30			69.7					133.5				310.0					0.43				0.083 3			0.002 0					2.336 0				0.095 0					0.201 5				0.004 3					0.063 9			0.002 9						1 258					47									1 214	30							1 184.0							23.0					1 252					55				97
			31			70.7					212.0				79.8					2.66				0.179 9			0.003 9					12.460 0				0.340 0					0.502 9				0.006 6					0.134 2			0.005 4						2 643					36									2 636	26							2 624.0							28.0					2 544					96				100
			32			67.9					316.1				699.0					0.45				0.056 3			0.001 2					0.667 0				0.018 0					0.085 7				0.000 8					0.026 6			0.001 1						448					50									518	11							529.9							4.7					531					22				98
			33			45.4					189.1				277.9					0.68				0.067 2			0.001 7					1.253 0				0.037 0					0.135 4				0.001 3					0.040 7			0.001 7						826					51									824	16							818.5							7.3					805					33				99
			34			106.8					120.2				184.1					0.65				0.168 1			0.003 8					11.210 0				0.340 0					0.480 7				0.007 9					0.130 5			0.006 2						2 534					39									2 538	28							2 529.0							34.0					2 477					110				100
			35			50.3					262.0				236.0					1.11				0.071 5			0.001 9					1.615 0				0.050 0					0.163 6				0.001 8					0.048 9			0.002 0						952					55									973	20							977.0							10.0					964					39				100
序号			点号			元素含量/10^-6														²³²Th/ ²³⁸U				同位素比值及误差																																			年龄值及误差/Ma																																									谐和度/%
						Pb					²³²Th				²³⁸U									²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U									²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb											²⁰⁷Pb/²³⁵U									²⁰⁶Pb/²³⁸U											²⁰⁸Pb/²³²Th
						Pb					²³²Th				²³⁸U									比值			1σ					比值				1σ					比值				1σ					比值				1σ					年龄					1σ						年龄				1σ					年龄					1σ						年龄						1σ
Ⅱ			36			10.2					91.8				213.7					0.43				0.052 0			0.002 8					0.306 0				0.018 0					0.042 4				0.000 6					0.013 4				0.000 8					220					110						268				14					267.5					3.5						269						16				100
			37			27.3					181.4				224.0					0.81				0.057 9			0.002 0					0.784 0				0.030 0					0.097 3				0.001 2					0.030 5				0.001 4					489					78						584				17					598.4					6.9						607						27				98
			38			28.9					63.8				36.7					1.74				0.179 4			0.004 5					12.820 0				0.380 0					0.516 6				0.006 6					0.139 6				0.005 9					2 629					42						2 660				28					2 682.0					28.0						2 639						100				99
			39			116.3					790.0				169.0					4.67				0.182 2			0.003 7					12.330 0				0.330 0					0.489 3				0.007 3					0.029 9				0.001 4					2 671					35						2 627				25					2 566.0					32.0						596						28				98
			40			13.0					82.6				74.7					1.11				0.066 1			0.003 1					1.191 0				0.056 0					0.131 0				0.001 9					0.040 0				0.001 9					733					98						789				26					793.0					11.0						793						37				99
			41			55.6					141.1				156.9					0.90				0.097 0			0.002 2					3.682 0				0.100 0					0.274 1				0.002 8					0.078 6				0.003 2					1 551					42						1 563				22					1 561.0					14.0						1 529						60				100
			42			571.6					114.9				811.0					0.14				0.239 1			0.004 0					18.730 0				0.470 0					0.565 2				0.007 0					0.127 7				0.009 0					3 112					27						3 026				25					2 887.0					29.0						2 420						160				95
			43			26.1					40.5				38.6					1.05				0.164 1			0.004 1					11.010 0				0.350 0					0.485 8				0.007 3					0.130 3				0.006 1					2 485					41						2 518				30					2 554.0					32.0						2 471						110				99
			44			26.3					104.6				28.0					3.74				0.156 8			0.004 8					9.640 0				0.340 0					0.446 5				0.006 8					0.125 2				0.005 2					2 391					53						2 391				33					2 377.0					30.0						2 383						93				99
			45			293.3					280.4				650.0					0.43				0.131 0			0.002 1					6.931 0				0.170 0					0.383 6				0.003 6					0.111 4				0.004 3					2 107					28						2 102				22					2 092.0					17.0						2 135						78				100
			46			21.8					187.6				107.1					1.75				0.065 3			0.002 4					1.229 0				0.049 0					0.136 5				0.001 6					0.039 5				0.001 6					729					81						807				22					824.4					9.0						783						32				98
			47			155.9					146.4				405.5					0.36				0.114 3			0.002 0					5.241 0				0.130 0					0.332 8				0.003 2					0.094 2				0.003 8					1 866					31						1 859				2 0					1 851.0					15.0						1 818						71				100
			48			11.2					118.0				205.0					0.58				0.052 1			0.002 4					0.316 7				0.013 9					0.044 3				0.000 8					0.021 5				0.003 3					288					67						279				11					279.0					5.0						430						66				100
			49			137.3					4 240.0				1 431.0					2.96				0.062 2			0.001 7					0.544 0				0.020 0					0.063 4				0.001 3					0.012 9				0.000 8					669					61						439				13					396.4					7.6						258						15				90
			50			21.1					130.4				113.5					1.15				0.064 2			0.003 4					1.187 0				0.065 0					0.134 2				0.002 2					0.040 7				0.001 9					660					110						785				30					811.0					13.0						807						36				97
			51			3.1					29.7				52.8					0.56				0.058 4			0.005 7					0.390 0				0.039 0					0.049 9				0.001 1					0.014 9				0.001 3					270					190						323				29					313.6					6.9						299						26				97
			52			53.7					420.0				271.0					1.55				0.067 2			0.002 4					1.264 0				0.061 0					0.136 1				0.002 1					0.040 9				0.001 6					798					78						823				27					822.0					12.0						810						32				100
			53			30.3					375.3				581.0					0.65				0.052 3			0.001 8					0.309 0				0.014 0					0.043 1				0.000 6					0.013 4				0.000 6					263					74						273				11					271.7					3.5						269						11				100
			54			57.4					135.6				108.0					1.26				0.125 3			0.002 9					6.520 0				0.250 0					0.377 8				0.004 5					0.103 7				0.004 0					2 025					43						2 046				35					2 065.0					21.0						1 994						73				99
			55			201.3					346.0				508.0					0.68				0.116 6			0.002 7					4.940 0				0.200 0					0.314 8				0.005 5					0.065 8				0.003 1					1 897					42						1 807				33					1 764.0					27.0						1 287						59				98
			56			27.5					99.4				130.9					0.76				0.075 0			0.002 4					1.688 0				0.073 0					0.164 3				0.002 4					0.049 9				0.002 1					1 027					65						998				28					980.0					13.0						983						41				98
			57			17.0					74.0				96.1					0.77				0.064 6			0.002 5					1.253 0				0.061 0					0.141 3				0.002 1					0.042 5				0.002 0					715					83						822				27					852.0					12.0						841						38				96
			58			144.2					81.0				392.0					0.21				0.114 3			0.002 1					5.271 0				0.190 0					0.337 1				0.003 8					0.091 6				0.003 6					1 862					33						1 862				30					1 872.0					18.0						1 771						66				99
			59			8.5					75.6				162.0					0.47				0.052 0			0.003 3					0.330 0				0.022 0					0.046 5				0.000 8					0.013 4				0.000 8					200					130						286				17					293.0					5.0						268						16				98
			60			60.1					51.1				94.9					0.54				0.175 0			0.003 7					11.970 0				0.440 0					0.500 1				0.006 5					0.138 5				0.005 7					2 600					35						2 598				35					2 612.0					28.0						2 625						99				99
			61			33.6					43.7				51.8					0.84				0.167 9			0.004 3					11.050 0				0.440 0					0.480 0				0.006 8					0.134 5				0.005 8					2 524					43						2 523				36					2 526.0					29.0						2 546						100				100
序号			点号			元素含量/10^-6											²³²Th/ ²³⁸U				同位素比值及误差																																							年龄值及误差/Ma																																											谐和度/%
						Pb	²³²Th					²³⁸U									²⁰⁷Pb/²⁰⁶Pb									²⁰⁷Pb/²³⁵U								²⁰⁶Pb/²³⁸U													²⁰⁸Pb/²³²Th									²⁰⁷Pb/²⁰⁶Pb								²⁰⁷Pb/²³⁵U															²⁰⁶Pb/²³⁸U										²⁰⁸Pb/²³²Th
						Pb	²³²Th					²³⁸U									比值					1σ				比值				1σ				比值					1σ								比值				1σ					年龄				1σ				年龄									1σ						年龄					1σ					年龄						1σ
Ⅲ			1			8.4	84.5					161.3					0.52				0.057 2					0.003 6				0.328 0				0.017 5				0.042 5					0.000 8				0.013 8								0.000 6					502				132				288									13						268.3					5.1					277						13				92
			2			15.1	214.6					294.2					0.73				0.054 7					0.002 6				0.318 3				0.015 1				0.042 1					0.000 8				0.013 0								0.000 6					467				103				281									12						266.1					5.2					262						12				94
			3			8.1	79.3					167.0					0.48				0.053 6					0.002 8				0.296 0				0.015 2				0.040 5					0.000 8				0.012 7								0.000 5					354				123				263									12						255.9					4.6					254						10				97
			4			7.2	83.3					135.3					0.62				0.058 1					0.003 4				0.332 6				0.016 9				0.042 2					0.000 9				0.013 9								0.000 6					600				95				292									13						266.5					5.3					280						12				91
			5			9.2	107.8					178.1					0.61				0.051 7					0.002 7				0.297 3				0.015 1				0.041 9					0.000 7				0.013 1								0.000 5					272				120				264									12						264.4					4.4					262						9				99
			6			10.6	140.8					208.4					0.68				0.051 8					0.002 2				0.287 5				0.011 2				0.040 4					0.000 7				0.013 1								0.000 5					280				92				257									9						255.5					4.1					263						10				99
			7			7.1	91.3					161.9					0.56				0.050 1					0.002 8				0.276 7				0.015 0				0.040 3					0.000 9				0.012 9								0.000 6					211				130				248									12						254.9					5.5					259						11				97
			8			16.4	160.2					330.0					0.49				0.053 4					0.002 3				0.304 4				0.012 3				0.041 8					0.000 7				0.013 7								0.000 5					346				92				270									10						263.7					4.3					275						11				97
			9			26.8	383.8					504.6					0.76				0.053 5					0.001 6				0.307 3				0.008 7				0.041 7					0.000 5				0.013 7								0.000 4					350				67				272									7						263.2					3.3					274						7				96
			10			7.9	83.6					152.0					0.55				0.052 0					0.003 0				0.305 2				0.017 7				0.042 5					0.000 8				0.014 9								0.000 7					283				135				270									14						268.4					5.1					300						14				99
			11			6.5	61.2					129.9					0.47				0.053 9					0.002 8				0.308 3				0.014 9				0.041 9					0.000 8				0.012 9								0.000 6					365				112				273									12						264.7					4.7					260						12				96
			12			7.1	62.5					141.8					0.44				0.056 1					0.003 9				0.325 3				0.020 3				0.042 5					0.000 8				0.013 0								0.000 6					454				158				286									16						268.1					5.2					261						12				93
			13			21.0	245.9					400.4					0.61				0.050 9					0.001 9				0.293 8				0.010 7				0.041 9					0.000 6				0.014 2								0.000 4					239				85				262									8						264.6					3.8					285						8				98
			14			12.4	141.1					243.3					0.58				0.054 7					0.002 6				0.304 2				0.014 2				0.040 4					0.000 7				0.013 7								0.000 6					467				103				270									11						255.4					4.3					275						13				94
			15			16.1	193.7					302.6					0.64				0.048 2					0.001 8				0.280 6				0.010 7				0.042 1					0.000 6				0.013 8								0.000 5					109				89				251									8						265.6					3.9					276						10				94
			16			6.1	75.5					115.2					0.66				0.055 0					0.003 2				0.302 9				0.016 0				0.040 7					0.000 8				0.015 1								0.000 7					413				130				269									12						257.0					4.8					304						14				95
			17			6.2	60.7					123.7					0.49				0.053 0					0.003 7				0.298 4				0.020 7				0.041 0					0.000 9				0.014 6								0.000 9					328				159				265									16						259.0					5.8					292						17				97
			18			7.2	73.2					147.1					0.50				0.051 1					0.002 6				0.280 1				0.014 3				0.040 3					0.000 7				0.014 0								0.000 6					256				119				251									11						254.4					4.6					281						12				98
			19			9.1	91.2					183.1					0.50				0.054 1					0.002 6				0.301 5				0.013 5				0.040 8					0.000 9				0.014 2								0.000 6					376				106				268									11						258.0					5.3					285						12				96
			20			28.8	366.3					550.4					0.67				0.048 0					0.001 8				0.276 9				0.010 6				0.041 9					0.000 7				0.013 6								0.000 5					98				89				248									8						264.3					4.5					274						10				93
Ⅳ			1			9.5	108.9					184.3					0.59				0.050 4					0.002 5				0.287 1				0.014 1				0.041 3					0.000 7				0.012 9								0.000 5					213				112				256									11						261.1					4.2					259						11				98
			2			7.7	81.6					151.0					0.54				0.050 0					0.002 9				0.282 5				0.015 0				0.041 6					0.000 8				0.013 4								0.000 6					198				135				253									12						262.7					4.9					268						11				96
			3			7.5	88.8					140.0					0.63				0.050 4					0.003 9				0.284 9				0.021 0				0.041 5					0.000 9				0.011 8								0.000 7					217				177				255									17						262.2					5.4					238						13				97
			4			6.9	67.3					136.7					0.49				0.057 1					0.003 6				0.327 5				0.019 7				0.042 0					0.000 8				0.014 0								0.000 6					494				141				288									15						265.5					5.1					281						13				91
			5			16.5	196.9					323.1					0.61				0.055 8					0.002 2				0.318 4				0.012 1				0.041 4					0.000 7				0.013 7								0.000 4					443				87				281									9						261.6					4.0					276						8				92
			6			7.1	83.4					142.4					0.59				0.054 9					0.003 0				0.306 1				0.015 7				0.040 9					0.000 8				0.012 5								0.000 5					406				122				271									12						258.6					4.8					251						10				95