Zircon U-Pb Ages, Geochemical Characteristics and Tectonic Implications of Xigongka Granodiorite Around Gonghe Basin, West of Western Qinling Mountains

doi:10.19657/j.geoscience.1000-8527.2018.02.10

Abstract

Abstract:

Xigongka granodiorite is located in Gonghe Basin, west of the Western Qinling mountains Orogenic Belt, and the main composition of rock is gray, fine-grained, block granodiorite. In this paper,we carried out the petrography, zircon U-Pb geochronology and geochemistry of Xigongka granodiorite. Zircon LA-ICP-MS U-Pb dating yielded a weighted mean age of (227.2±7.3) Ma, which is interpreted as the emplacement age of the Xikongka intrusion.The Xigongka intrusion is weakly peraluminous and high-K calc-alkaline with A/CNK values of 0.99-1.20 and high contents of SiO₂(69.86%-70.94%),K₂O(3.20%-4.08%),K₂O+Na₂O(5.61%-7.03%), and belongs to I-type granite. It is characterized by enrichment in LILE(such as K, Rb, Ba, Th, U), and by depletion in HFSE(such as Nb, Ta, Ti, P) with high LREE/HREE ratios of 11.04-13.13 and moderate negative Eu anomalies (δEu=0.72-0.84). The geochemical characteristics of the Xigongka granodiorite suggested that it was partial melting of crustal components. In combination with previous studies, the Xigongka intrusion was formed in the Late Triassic,which is consistent with the ages of other intrusions in the region. Therefore, they were all formed in the same tectonic environment of post-collision. This finding indicated that the west part of Western Qinling Orogen turned into the tectonic environment of post-collision in the Late Triassic and it also provided new constraints on the tectono-magmatic evolution of Gonghe Basin in Western Qinling Orogen.

Key words: zircon U-Pb geochronology, geochemistry, tectonic setting, Xigongka granodiorite, Gonghe Basin, western Qinling mountains

CLC Number:

P588.12
P59

YANG Hanwen, SHEN Junfeng, WEI Liyong, ZHANG Zhen, LIU Mannian, FENG Boxin, ZHANG Luoning. Zircon U-Pb Ages, Geochemical Characteristics and Tectonic Implications of Xigongka Granodiorite Around Gonghe Basin, West of Western Qinling Mountains[J]. Geoscience, 2018, 32(02): 316-328.

Figures/Tables 13

References 45

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样号	含量/10^-6		Th/U	同位素比值														年龄/Ma
样号	Th	U	Th/U	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁸Pb/ ²³²Th		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ	²⁰⁶Pb/ ²³⁸U	1σ	²⁰⁸Pb/ ²³²Th	1σ
D3076-1-1	216.75	547.91	0.40	0.057 3	0.001 4		0.282 5		0.004 5		0.035 8		0.000 4		0.011 1		0.000 1		502		17		253	4	226	3	223	3
D3076-1-2	160.68	377.88	0.43	0.051 4	0.001 6		0.281 6		0.007 2		0.039 7		0.000 5		0.011 2		0.000 2		260		35		252	6	251	3	226	4
D3076-1-3	174.67	299.68	0.58	0.052 9	0.001 6		0.263 1		0.006 2		0.036 1		0.000 4		0.011 2		0.000 2		322		31		237	5	229	3	226	3
D3076-1-4	80.68	200.13	0.40	0.059 5	0.006 6		0.351 8		0.037 7		0.042 9		0.001 2		0.013 7		0.001 2		584		186		306	28	271	7	274	24
D3076-1-5	110.10	174.97	0.63	0.051 0	0.001 7		0.272 1		0.007 5		0.038 7		0.000 5		0.012 2		0.000 2		241		40		244	6	245	3	246	4
D3076-1-6	31.80	85.02	0.37	0.050 8	0.001 9		0.251 6		0.008 4		0.035 9		0.000 5		0.012 4		0.000 4		230		52		228	7	228	3	249	7
D3076-1-7	50.35	168.18	0.30	0.051 0	0.002 3		0.231 9		0.009 3		0.033 0		0.000 5		0.009 8		0.000 3		242		67		212	8	209	3	197	5
D3076-1-8	333.07	443.45	0.75	0.071 1	0.003 8		0.357 0		0.018 4		0.036 4		0.000 6		0.011 0		0.000 2		961		113		310	14	231	4	222	3
D3076-1-9	131.60	665.57	0.20	0.050 8	0.001 7		0.260 4		0.007 3		0.037 2		0.000 5		0.011 9		0.000 2		231		42		235	6	235	3	240	4
D3076-1-10	123.03	287.04	0.43	0.050 6	0.001 9		0.247 7		0.008 2		0.035 5		0.000 5		0.011 1		0.000 3		224		52		225	7	225	3	223	5
D3076-1-11	282.39	394.62	0.72	0.057 9	0.002 1		0.286 3		0.009 2		0.035 9		0.000 5		0.011 6		0.000 4		526		47		256	7	227	3	232	7
D3076-1-12	70.09	310.22	0.23	0.050 2	0.002 8		0.231 1		0.012 1		0.033 4		0.000 6		0.010 9		0.000 3		205		90		211	10	212	3	219	6
D3076-1-13	667.37	555.17	1.20	0.050 4	0.001 4		0.239 6		0.005 2		0.034 5		0.000 4		0.010 8		0.000 2		212		29		218	4	219	3	217	3
D3076-1-14	184.27	982.64	0.19	0.050 9	0.001 2		0.259 5		0.004 1		0.037 0		0.000 4		0.012 0		0.000 2		237		17		234	3	234	3	240	3
D3076-1-15	77.76	167.89	0.46	0.050 7	0.001 4		0.244 3		0.005 4		0.035 0		0.000 4		0.010 3		0.000 1		225		29		222	4	222	3	207	3
D3076-1-16	96.42	722.82	0.13	0.052 8	0.002 2		0.294 1		0.010 8		0.040 4		0.000 6		0.018 7		0.000 6		320		57		262	8	255	4	374	11
D3076-1-17	136.97	279.77	0.49	0.051 5	0.002 2		0.273 8		0.010 5		0.038 6		0.000 6		0.011 7		0.000 3		263		62		246	8	244	3	236	5
D3076-1-18	83.62	285.53	0.29	0.053 3	0.001 8		0.249 4		0.007 1		0.033 9		0.000 5		0.010 2		0.000 3		342		41		226	6	215	3	204	6

样号	含量/10^-6		Th/U	同位素比值														年龄/Ma
样号	Th	U	Th/U	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁸Pb/ ²³²Th		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ	²⁰⁶Pb/ ²³⁸U	1σ	²⁰⁸Pb/ ²³²Th	1σ
D3076-1-1	216.75	547.91	0.40	0.057 3	0.001 4		0.282 5		0.004 5		0.035 8		0.000 4		0.011 1		0.000 1		502		17		253	4	226	3	223	3
D3076-1-2	160.68	377.88	0.43	0.051 4	0.001 6		0.281 6		0.007 2		0.039 7		0.000 5		0.011 2		0.000 2		260		35		252	6	251	3	226	4
D3076-1-3	174.67	299.68	0.58	0.052 9	0.001 6		0.263 1		0.006 2		0.036 1		0.000 4		0.011 2		0.000 2		322		31		237	5	229	3	226	3
D3076-1-4	80.68	200.13	0.40	0.059 5	0.006 6		0.351 8		0.037 7		0.042 9		0.001 2		0.013 7		0.001 2		584		186		306	28	271	7	274	24
D3076-1-5	110.10	174.97	0.63	0.051 0	0.001 7		0.272 1		0.007 5		0.038 7		0.000 5		0.012 2		0.000 2		241		40		244	6	245	3	246	4
D3076-1-6	31.80	85.02	0.37	0.050 8	0.001 9		0.251 6		0.008 4		0.035 9		0.000 5		0.012 4		0.000 4		230		52		228	7	228	3	249	7
D3076-1-7	50.35	168.18	0.30	0.051 0	0.002 3		0.231 9		0.009 3		0.033 0		0.000 5		0.009 8		0.000 3		242		67		212	8	209	3	197	5
D3076-1-8	333.07	443.45	0.75	0.071 1	0.003 8		0.357 0		0.018 4		0.036 4		0.000 6		0.011 0		0.000 2		961		113		310	14	231	4	222	3
D3076-1-9	131.60	665.57	0.20	0.050 8	0.001 7		0.260 4		0.007 3		0.037 2		0.000 5		0.011 9		0.000 2		231		42		235	6	235	3	240	4
D3076-1-10	123.03	287.04	0.43	0.050 6	0.001 9		0.247 7		0.008 2		0.035 5		0.000 5		0.011 1		0.000 3		224		52		225	7	225	3	223	5
D3076-1-11	282.39	394.62	0.72	0.057 9	0.002 1		0.286 3		0.009 2		0.035 9		0.000 5		0.011 6		0.000 4		526		47		256	7	227	3	232	7
D3076-1-12	70.09	310.22	0.23	0.050 2	0.002 8		0.231 1		0.012 1		0.033 4		0.000 6		0.010 9		0.000 3		205		90		211	10	212	3	219	6
D3076-1-13	667.37	555.17	1.20	0.050 4	0.001 4		0.239 6		0.005 2		0.034 5		0.000 4		0.010 8		0.000 2		212		29		218	4	219	3	217	3
D3076-1-14	184.27	982.64	0.19	0.050 9	0.001 2		0.259 5		0.004 1		0.037 0		0.000 4		0.012 0		0.000 2		237		17		234	3	234	3	240	3
D3076-1-15	77.76	167.89	0.46	0.050 7	0.001 4		0.244 3		0.005 4		0.035 0		0.000 4		0.010 3		0.000 1		225		29		222	4	222	3	207	3
D3076-1-16	96.42	722.82	0.13	0.052 8	0.002 2		0.294 1		0.010 8		0.040 4		0.000 6		0.018 7		0.000 6		320		57		262	8	255	4	374	11
D3076-1-17	136.97	279.77	0.49	0.051 5	0.002 2		0.273 8		0.010 5		0.038 6		0.000 6		0.011 7		0.000 3		263		62		246	8	244	3	236	5
D3076-1-18	83.62	285.53	0.29	0.053 3	0.001 8		0.249 4		0.007 1		0.033 9		0.000 5		0.010 2		0.000 3		342		41		226	6	215	3	204	6

样品	SiO₂		TiO₂		Al₂O₃		Fe₂O₃		MnO		MgO		CaO	Na₂O		K₂O		P₂O₅		烧失量		总量		Mg^#	K₂O+ Na₂O			K₂O/ Na₂O	A/ CNK		A/ NK
D3076HX2-1	70.10		0.28		14.81		2.46		0.06		0.54		3.03	3.42		3.48		0.11		1.95		100.23		0.34	6.90			1.02	0.99		1.58
D3076HX3-1	70.11		0.28		14.94		2.44		0.07		0.51		2.71	3.12		3.55		0.10		1.54		99.39		0.33	6.67			1.14	1.07		1.65
D3076HX4-1	70.56		0.26		15.02		2.25		0.06		0.42		2.54	2.95		4.08		0.10		1.38		99.63		0.30	7.03			1.38	1.08		1.62
D3076HX5-1	70.08		0.27		15.01		2.39		0.06		0.58		2.76	3.13		3.64		0.10		2.04		100.06		0.36	6.77			1.16	1.06		1.65
D3076HX6-1	70.22		0.28		14.85		2.45		0.07		0.52		2.89	3.06		3.50		0.11		1.37		99.32		0.33	6.56			1.15	1.03		1.61
D3076HX7-1	70.91		0.27		15.15		2.49		0.07		0.44		2.38	2.98		3.49		0.10		1.75		100.02		0.29	6.47			1.17	1.15		1.72
D3076HX8-1	70.55		0.28		15.09		2.54		0.06		0.41		2.39	3.12		3.49		0.11		1.62		99.65		0.27	6.61			1.12	1.14		1.69
D3076HX8-1R	70.93		0.27		15.25		2.56		0.07		0.41		2.38	3.13		3.48		0.11		1.18		99.77		0.27	6.62			1.11	1.15		1.71
D3076HX9-1	69.86		0.29		14.81		2.37		0.17		0.66		3.44	3.05		3.20		0.10		2.26		100.21		0.39	6.25			1.05	1.00		1.74
D3076HX110-1	70.56		0.27		14.98		2.45		0.09		0.63		2.81	2.77		3.66		0.10		1.14		99.46		0.37	6.43			1.32	1.11		1.78
D3076HX11-1	70.94		0.27		15.04		2.31		0.11		0.52		2.90	2.03		3.57		0.11		1.84		99.65		0.35	5.61			1.76	1.20		2.08
D3076HX12-1	70.30		0.27		15.02		2.42		0.08		0.59		2.65	3.11		3.68		0.10		1.26		99.48		0.36	6.79			1.18	1.09		1.69
样品	δ		La		Ce		Pr		Nd		Sm		Eu	Gd		Tb		Dy		Ho		Er		Tm	Yb			Lu	Y		ΣREE
D3076HX2-1	1.76		26.09		49.97		5.49		20.10		3.91		0.96	3.33		0.45		2.42		0.42		1.10		0.16	0.97			0.14	13.27		115.51
D3076HX3-1	1.72		23.74		45.78		5.09		18.58		3.71		0.93	3.20		0.45		2.38		0.42		1.11		0.16	0.98			0.14	13.18		106.67
D3076HX4-1	1.79		25.30		49.03		5.38		19.66		3.88		0.92	3.29		0.46		2.47		0.43		1.14		0.16	1.01			0.15	13.46		113.28
D3076HX5-1	1.69		27.03		51.61		5.72		20.91		4.08		0.95	3.43		0.48		2.52		0.44		1.14		0.16	0.98			0.14	13.61		119.59
D3076HX6-1	1.73		30.94		58.24		6.32		22.67		4.29		0.98	3.56		0.48		2.50		0.44		1.14		0.16	0.98			0.14	13.76		132.84
D3076HX7-1	1.55		29.92		56.99		6.26		22.60		4.24		0.98	3.55		0.48		2.50		0.43		1.12		0.16	0.98			0.14	13.54		130.35
D3076HX8-1	1.58		29.03		55.61		6.13		22.15		4.24		0.94	3.51		0.47		2.50		0.43		1.13		0.16	0.98			0.14	13.38		127.42
D3076HX8-1R	1.57		29.92		57.12		6.30		22.76		4.27		0.94	3.56		0.47		2.50		0.43		1.13		0.16	0.97			0.14	13.49		130.67
D3076HX9-1	1.45		27.03		51.83		5.79		21.19		4.20		1.10	3.66		0.51		2.72		0.48		1.27		0.17	1.10			0.16	15.19		121.21
D3076HX110-1	1.50		26.71		51.61		5.70		20.76		4.02		0.93	3.38		0.47		2.50		0.43		1.13		0.16	0.98			0.14	13.42		118.92
D3076HX11-1	1.13		28.88		54.95		6.06		22.02		4.20		0.98	3.52		0.48		2.50		0.44		1.15		0.16	1.00			0.14	13.71		126.48
D3076HX12-1	1.69		28.89		55.33		6.09		22.01		4.20		0.96	3.53		0.48		2.52		0.43		1.13		0.16	0.98			0.14	13.45		126.85
样品	LREE		HREE		LREE/ HREE		(La/ Yb)_N		(La/ Sm)_N		(Gd/ Yb)_N		δEu	δCe		Co		Ni		Cs		Ga		Hf	Rb			Nb	Sr		Ba
D3076HX2-1	106.52		8.99		11.85		19.29		4.31		2.84		0.79	0.97		5.71		2.28		8.46		17.79		3.43	115.52			10.88	337.77		590.66
D3076HX3-1	97.83		8.84		11.07		17.38		4.13		2.70		0.81	0.97		5.34		2.34		8.17		17.84		3.43	120.15			11.20	344.87		690.22
D3076HX4-1	104.17		9.11		11.43		17.97		4.21		2.69		0.77	0.98		5.46		6.19		8.58		17.93		3.75	129.75			11.22	349.83		786.23
D3076HX5-1	110.30		9.29		11.87		19.78		4.28		2.90		0.76	0.97		4.80		2.71		8.13		17.82		3.34	120.52			11.22	314.97		690.96
D3076HX6-1	123.44		9.40		13.13		22.65		4.66		3.01		0.74	0.97		4.89		2.71		7.53		17.80		3.42	116.06			11.35	344.68		647.00
D3076HX7-1	120.99		9.36		12.93		21.90		4.56		3.00		0.75	0.97		4.67		3.40		7.12		18.05		3.56	111.18			11.17	292.26		593.03
D3076HX8-1	118.10		9.32		12.67		21.25		4.42		2.96		0.72	0.97		6.04		3.27		6.52		18.14		3.59	109.87			11.08	291.45		559.94
D3076HX8-1R	121.31		9.36		12.96		22.13		4.52		3.04		0.72	0.97		6.08		2.51		6.59		18.47		3.51	111.03			11.45	293.41		560.98
D3076HX9-1	111.14		10.07		11.04		17.63		4.15		2.75		0.84	0.97		7.26		3.73		9.13		23.17		4.06	140.14			14.98	262.52		382.96
D3076HX110-1	109.73		9.19		11.94		19.55		4.29		2.85		0.75	0.98		5.55		2.09		7.91		17.96		3.55	127.86			11.62	267.88		554.99
D3076HX11-1	117.09		9.39		12.47		20.72		4.44		2.91		0.76	0.97		5.55		2.09		5.98		18.22		3.71	126.51			11.27	201.84		525.22
D3076HX12-1	117.48		9.37		12.54		21.15		4.44		2.98		0.74	0.97		4.71		2.12		7.69		17.91		3.46	129.86			11.33	282.71		681.88
样品	Ta		Th		V		U		Cu		Zr		Pb	Zn		Sc		Cr		Ge		Li		Be	Sr/Y			Nb/Ta	La/Nb
D3076HX2-1	0.97		10.41		25.93		3.87		3.46		121.32		13.02	30.33		3.69		4.72		1.29		27.67		3.05	25.45			11.22	2.40
D3076HX3-1	1.00		9.87		24.94		4.00		2.20		120.75		14.58	30.55		3.57		4.87		1.22		33.13		3.09	26.17			11.20	2.12
D3076HX4-1	1.02		10.55		25.34		4.03		4.16		133.55		14.83	31.54		3.69		10.85		1.29		24.58		2.95	25.99			11.00	2.25
样品	Ta	Th		V		U		Cu		Zr		Pb			Zn		Sc		Cr		Ge		Li			Be	Sr/Y			Nb/Ta		La/Nb
D3076HX5-1	1.01	11.17		24.71		3.92		3.01		114.64		15.34			28.18		3.58		5.15		1.27		36.02			3.07	23.14			11.11		2.41
D3076HX6-1	1.00	11.94		24.42		4.03		2.34		120.56		15.26			28.61		3.63		5.99		1.19		25.75			2.99	25.05			11.35		2.73
D3076HX7-1	1.00	11.69		25.55		4.10		7.10		126.95		15.59			33.61		3.68		7.54		1.35		50.99			3.07	21.58			11.17		2.68
D3076HX8-1	1.01	11.38		25.86		4.16		8.08		126.61		16.21			32.33		3.65		5.83		1.26		39.66			3.02	21.78			10.97		2.62
D3076HX8-1R	1.02	11.92		26.40		4.14		8.25		124.38		16.23			32.22		3.68		4.44		1.34		39.95			3.05	21.75			11.23		2.61
D3076HX9-1	1.28	11.10		36.12		4.50		10.35		143.63		14.97			166.77		4.22		9.13		1.74		16.45			3.58	17.28			11.70		1.80
D3076HX110-1	1.01	10.76		25.56		4.11		12.45		126.82		9.05			41.58		3.55		4.29		1.39		16.57			3.02	19.96			11.50		2.30
D3076HX11-1	1.02	11.39		26.06		3.89		4.83		132.43		11.57			49.38		3.44		3.83		1.37		41.60			2.81	14.72			11.05		2.56
D3076HX12-1	1.01	11.30		25.33		4.07		11.24		120.95		9.61			28.13		3.62		4.34		1.39		19.36			2.91	21.02			11.22		2.55

样品	SiO₂		TiO₂		Al₂O₃		Fe₂O₃		MnO		MgO		CaO	Na₂O		K₂O		P₂O₅		烧失量		总量		Mg^#	K₂O+ Na₂O			K₂O/ Na₂O	A/ CNK		A/ NK
D3076HX2-1	70.10		0.28		14.81		2.46		0.06		0.54		3.03	3.42		3.48		0.11		1.95		100.23		0.34	6.90			1.02	0.99		1.58
D3076HX3-1	70.11		0.28		14.94		2.44		0.07		0.51		2.71	3.12		3.55		0.10		1.54		99.39		0.33	6.67			1.14	1.07		1.65
D3076HX4-1	70.56		0.26		15.02		2.25		0.06		0.42		2.54	2.95		4.08		0.10		1.38		99.63		0.30	7.03			1.38	1.08		1.62
D3076HX5-1	70.08		0.27		15.01		2.39		0.06		0.58		2.76	3.13		3.64		0.10		2.04		100.06		0.36	6.77			1.16	1.06		1.65
D3076HX6-1	70.22		0.28		14.85		2.45		0.07		0.52		2.89	3.06		3.50		0.11		1.37		99.32		0.33	6.56			1.15	1.03		1.61
D3076HX7-1	70.91		0.27		15.15		2.49		0.07		0.44		2.38	2.98		3.49		0.10		1.75		100.02		0.29	6.47			1.17	1.15		1.72
D3076HX8-1	70.55		0.28		15.09		2.54		0.06		0.41		2.39	3.12		3.49		0.11		1.62		99.65		0.27	6.61			1.12	1.14		1.69
D3076HX8-1R	70.93		0.27		15.25		2.56		0.07		0.41		2.38	3.13		3.48		0.11		1.18		99.77		0.27	6.62			1.11	1.15		1.71
D3076HX9-1	69.86		0.29		14.81		2.37		0.17		0.66		3.44	3.05		3.20		0.10		2.26		100.21		0.39	6.25			1.05	1.00		1.74
D3076HX110-1	70.56		0.27		14.98		2.45		0.09		0.63		2.81	2.77		3.66		0.10		1.14		99.46		0.37	6.43			1.32	1.11		1.78
D3076HX11-1	70.94		0.27		15.04		2.31		0.11		0.52		2.90	2.03		3.57		0.11		1.84		99.65		0.35	5.61			1.76	1.20		2.08
D3076HX12-1	70.30		0.27		15.02		2.42		0.08		0.59		2.65	3.11		3.68		0.10		1.26		99.48		0.36	6.79			1.18	1.09		1.69
样品	δ		La		Ce		Pr		Nd		Sm		Eu	Gd		Tb		Dy		Ho		Er		Tm	Yb			Lu	Y		ΣREE
D3076HX2-1	1.76		26.09		49.97		5.49		20.10		3.91		0.96	3.33		0.45		2.42		0.42		1.10		0.16	0.97			0.14	13.27		115.51
D3076HX3-1	1.72		23.74		45.78		5.09		18.58		3.71		0.93	3.20		0.45		2.38		0.42		1.11		0.16	0.98			0.14	13.18		106.67
D3076HX4-1	1.79		25.30		49.03		5.38		19.66		3.88		0.92	3.29		0.46		2.47		0.43		1.14		0.16	1.01			0.15	13.46		113.28
D3076HX5-1	1.69		27.03		51.61		5.72		20.91		4.08		0.95	3.43		0.48		2.52		0.44		1.14		0.16	0.98			0.14	13.61		119.59
D3076HX6-1	1.73		30.94		58.24		6.32		22.67		4.29		0.98	3.56		0.48		2.50		0.44		1.14		0.16	0.98			0.14	13.76		132.84
D3076HX7-1	1.55		29.92		56.99		6.26		22.60		4.24		0.98	3.55		0.48		2.50		0.43		1.12		0.16	0.98			0.14	13.54		130.35
D3076HX8-1	1.58		29.03		55.61		6.13		22.15		4.24		0.94	3.51		0.47		2.50		0.43		1.13		0.16	0.98			0.14	13.38		127.42
D3076HX8-1R	1.57		29.92		57.12		6.30		22.76		4.27		0.94	3.56		0.47		2.50		0.43		1.13		0.16	0.97			0.14	13.49		130.67
D3076HX9-1	1.45		27.03		51.83		5.79		21.19		4.20		1.10	3.66		0.51		2.72		0.48		1.27		0.17	1.10			0.16	15.19		121.21
D3076HX110-1	1.50		26.71		51.61		5.70		20.76		4.02		0.93	3.38		0.47		2.50		0.43		1.13		0.16	0.98			0.14	13.42		118.92
D3076HX11-1	1.13		28.88		54.95		6.06		22.02		4.20		0.98	3.52		0.48		2.50		0.44		1.15		0.16	1.00			0.14	13.71		126.48
D3076HX12-1	1.69		28.89		55.33		6.09		22.01		4.20		0.96	3.53		0.48		2.52		0.43		1.13		0.16	0.98			0.14	13.45		126.85
样品	LREE		HREE		LREE/ HREE		(La/ Yb)_N		(La/ Sm)_N		(Gd/ Yb)_N		δEu	δCe		Co		Ni		Cs		Ga		Hf	Rb			Nb	Sr		Ba
D3076HX2-1	106.52		8.99		11.85		19.29		4.31		2.84		0.79	0.97		5.71		2.28		8.46		17.79		3.43	115.52			10.88	337.77		590.66
D3076HX3-1	97.83		8.84		11.07		17.38		4.13		2.70		0.81	0.97		5.34		2.34		8.17		17.84		3.43	120.15			11.20	344.87		690.22
D3076HX4-1	104.17		9.11		11.43		17.97		4.21		2.69		0.77	0.98		5.46		6.19		8.58		17.93		3.75	129.75			11.22	349.83		786.23
D3076HX5-1	110.30		9.29		11.87		19.78		4.28		2.90		0.76	0.97		4.80		2.71		8.13		17.82		3.34	120.52			11.22	314.97		690.96
D3076HX6-1	123.44		9.40		13.13		22.65		4.66		3.01		0.74	0.97		4.89		2.71		7.53		17.80		3.42	116.06			11.35	344.68		647.00
D3076HX7-1	120.99		9.36		12.93		21.90		4.56		3.00		0.75	0.97		4.67		3.40		7.12		18.05		3.56	111.18			11.17	292.26		593.03
D3076HX8-1	118.10		9.32		12.67		21.25		4.42		2.96		0.72	0.97		6.04		3.27		6.52		18.14		3.59	109.87			11.08	291.45		559.94
D3076HX8-1R	121.31		9.36		12.96		22.13		4.52		3.04		0.72	0.97		6.08		2.51		6.59		18.47		3.51	111.03			11.45	293.41		560.98
D3076HX9-1	111.14		10.07		11.04		17.63		4.15		2.75		0.84	0.97		7.26		3.73		9.13		23.17		4.06	140.14			14.98	262.52		382.96
D3076HX110-1	109.73		9.19		11.94		19.55		4.29		2.85		0.75	0.98		5.55		2.09		7.91		17.96		3.55	127.86			11.62	267.88		554.99
D3076HX11-1	117.09		9.39		12.47		20.72		4.44		2.91		0.76	0.97		5.55		2.09		5.98		18.22		3.71	126.51			11.27	201.84		525.22
D3076HX12-1	117.48		9.37		12.54		21.15		4.44		2.98		0.74	0.97		4.71		2.12		7.69		17.91		3.46	129.86			11.33	282.71		681.88
样品	Ta		Th		V		U		Cu		Zr		Pb	Zn		Sc		Cr		Ge		Li		Be	Sr/Y			Nb/Ta	La/Nb
D3076HX2-1	0.97		10.41		25.93		3.87		3.46		121.32		13.02	30.33		3.69		4.72		1.29		27.67		3.05	25.45			11.22	2.40
D3076HX3-1	1.00		9.87		24.94		4.00		2.20		120.75		14.58	30.55		3.57		4.87		1.22		33.13		3.09	26.17			11.20	2.12
D3076HX4-1	1.02		10.55		25.34		4.03		4.16		133.55		14.83	31.54		3.69		10.85		1.29		24.58		2.95	25.99			11.00	2.25
样品	Ta	Th		V		U		Cu		Zr		Pb			Zn		Sc		Cr		Ge		Li			Be	Sr/Y			Nb/Ta		La/Nb
D3076HX5-1	1.01	11.17		24.71		3.92		3.01		114.64		15.34			28.18		3.58		5.15		1.27		36.02			3.07	23.14			11.11		2.41
D3076HX6-1	1.00	11.94		24.42		4.03		2.34		120.56		15.26			28.61		3.63		5.99		1.19		25.75			2.99	25.05			11.35		2.73
D3076HX7-1	1.00	11.69		25.55		4.10		7.10		126.95		15.59			33.61		3.68		7.54		1.35		50.99			3.07	21.58			11.17		2.68
D3076HX8-1	1.01	11.38		25.86		4.16		8.08		126.61		16.21			32.33		3.65		5.83		1.26		39.66			3.02	21.78			10.97		2.62
D3076HX8-1R	1.02	11.92		26.40		4.14		8.25		124.38		16.23			32.22		3.68		4.44		1.34		39.95			3.05	21.75			11.23		2.61
D3076HX9-1	1.28	11.10		36.12		4.50		10.35		143.63		14.97			166.77		4.22		9.13		1.74		16.45			3.58	17.28			11.70		1.80
D3076HX110-1	1.01	10.76		25.56		4.11		12.45		126.82		9.05			41.58		3.55		4.29		1.39		16.57			3.02	19.96			11.50		2.30
D3076HX11-1	1.02	11.39		26.06		3.89		4.83		132.43		11.57			49.38		3.44		3.83		1.37		41.60			2.81	14.72			11.05		2.56
D3076HX12-1	1.01	11.30		25.33		4.07		11.24		120.95		9.61			28.13		3.62		4.34		1.39		19.36			2.91	21.02			11.22		2.55