Restoration of Paleosedimentary Environment of the Top of Zhiluo Formation in the Southern Margin of Ordos Basin: Evidence from Geochemical Characteristics of Mudstone

doi:10.19657/j.geoscience.1000-8527.2024.144

Abstract

Abstract:

Geochemical evidence from Jurassic mudstones in the southern part of the Ordos Basin records the evolution of paleosedimentary environments, and the evolution of the Middle Jurassic paleoenvironment forms the basis for the sedimentary enrichment of uranium. However, understanding of the sedimentary environment of the Zhiluo Formation in the southeastern Ordos Basin remains insufficient, restricting in-depth understanding of the formation conditions of sandstone-type uranium deposits. This study conducts major and trace element analyses on mudstones from the Middle Jurassic Zhiluo Formation and the top of the Yan’an Formation in the Diantou area of Huangling County. Based on vertical variations in typical geochemical parameters of the mudstones, the paleosedimentary environment is reconstructed. Results show that: combinations of B, equivalent B content, and Sr/Ba indicate that the sedimentary water of the Zhiluo Formation was in a brackish to slightly saline environment; combinations of U/Th, V/(V+Ni), V/Cr, and Ni/Co indicate that the paleowater medium at the top of the Yan’an Formation and Zhiluo Formation was oxygen-rich; Fe²⁺/Fe³⁺ ratios indicate that the Yan’an Formation formed a stable reducing layer, with the bottom of the upper submember of the lower member of the Zhiluo Formation gradually transitioning to a weakly reducing environment, and the upper member of the Zhiluo Formation being a strongly oxidizing environment; paleoclimate indicators (Sr, Sr/Cu, Al₂O₃/MgO, FeO/MnO) reveal that the Zhiluo Formation sedimentary period experienced a transition from semi-arid to arid conditions; Chemical Index of Alteration (CIA) and Index of Compositional Variability (ICV) reflect weaker chemical weathering in the upper member of the Zhiluo Formation compared to the lower member, indicating intensified tectonic activity around the Ordos Basin. The gradual increase in provenance input, paleoclimate changes during the Zhiluo period, and the transition of the paleowater environment from reducing to oxidizing conditions played a key role in constraining uranium enrichment and mineralization in this area.

Key words: Ordos Basin, paleoenvironment, Yan’an Formation, Zhiluo Formation, geochemistry, sandstone-type uranium

CLC Number:

CHENG Xianyu, ZHANG Tianfu, ZHANG Yun, HE Peng, SUN Lixin, MA Hailin, LU Chao. Restoration of Paleosedimentary Environment of the Top of Zhiluo Formation in the Southern Margin of Ordos Basin: Evidence from Geochemical Characteristics of Mudstone[J]. Geoscience, 2025, 39(04): 1129-1142.

Figures/Tables 9

References 43

[1]	LI S T, YANG S G, JERZYKIEWICZ T. Upper Triassic-Jurassic foreland sequences of the Ordos basin in China[M]// Stratigraphic Evolution of Foreland Basins. Calgary: SEPM(Society for Sedimentary Geology), 1995: 233-241.
[2]	YANG X Y, LING M X, SUN W, et al. Study on the ore-forming condition and occurrence of uranium minerals in sandstone-type uranium deposits from Ordos basin, Northwest China[J]. Geochimica et Cosmochimica Acta, 2006, 70(18): A720.
[3]	WU B L, WEI A J, LIU C Y, et al. Stable isotope tracer of white sandstone formation in Yan’an Formation in Northern Ordos Basin and its geological signifcance[J]. Geoscience Frontiers, 2015, 22(3):205-214.
[4]	叶晓东, 陈军, 陈曦, 等. “双碳”目标下的中国CCUS技术挑战及对策[J]. 油气藏评价与开发, 2024, 14(1):1-9.
[5]	张迈, 宋到福, 王铁冠, 等. 鄂尔多斯盆地杭锦旗地区天然气地球化学特征及气源探讨[J]. 石油实验地质, 2024, 46(1):124-135.
[6]	MIAO P S, CHEN Y, CHENG Y H, et al. New deep exploration discoveries of sandstonetype uranium deposits in North China[J]. Geotectonica et Metallogenia 2020, 44(4):563-575.
[7]	MIAO P S, JIN R S, LI J G, et al. The first discovery of a large sandstone-type uranium deposit in aeolian depositional environment[J]. Acta Geologica Sinica-English Edition, 2020, 94(2): 583-584.
[8]	张天福, 孙立新, 张云, 等. 鄂尔多斯盆地北缘侏罗纪延安组、直罗组泥岩微量、稀土元素地球化学特征及其古沉积环境意义[J]. 地质学报, 2016, 90(12): 3454-3472.
[9]	汤超, 肖鹏, 魏佳林, 等. 鄂尔多斯盆地志丹地区安定组铀矿化地质地球化学特征[J]. 华北地质, 2021, 44(2): 4-13.
[10]	金若时, 滕雪明. 中国北方砂岩型铀矿大规模成矿作用[J]. 华北地质, 20, 45(1):42-57.
[11]	WU B L, WEI A J, HU L, et al. Stable isotope characteristics and geological signifcance of epigenetic alteration in Dongsheng Uranium Deposit, Inner Mongolia[J]. Geology Bulletin, 2016, 35(12), 2133-2145.
[12]	AKHTAR S, YANG X Y, PIRAJNO F. Sandstone type uranium deposits in the Ordos basin, northwest China: A case study and an overview[J]. Journal of Asian Earth Sciences, 2017, 146: 367-382.
[13]	许中杰, 程日辉, 王嘹亮, 等. 闽西南地区晚三叠-中侏罗世沉积岩矿物和元素地球化学特征: 对盆地构造背景转变的约束[J]. 岩石学报, 2013, 29(8): 2913-2924.
[14]	SAGEM AN B B, MURPHY A E, WERNE J P, et al. A tale of shales: the relative roles of production, deco mposition, and dilution in the accumulation of organic-rich strata,Middle Upper Devonian, Appalachian Basin[J]. Chemical Geology, 2003,195:229-273.
[15]	刘池洋, 赵红格, 桂小军, 等. 鄂尔多斯盆地演化-改造的时空坐标及其成藏(矿)响应[J]. 地质学报, 2006, 80(5): 617-638.
[16]	黄少华, 刘章月, 秦明宽, 等. 基于便携式色度、X荧光及高光谱的砂岩铀成矿环境研究——以鄂尔多斯盆地西北部特拉敖包铀矿产地为例[J]. 地质与勘探, 2023, 59(6):1182-1193.
[17]	张字龙, 范洪海, 蔡煜琦, 等. 鄂尔多斯盆地黄陵地区直罗组有机地球化学特征及其与铀成矿关系[J]. 地质学报, 2016, 90(12): 3408-3423.
[18]	刘孝锐, 路俊刚, 谭开俊, 等. 鄂尔多斯盆地西南部HQ地区长7段烃源岩地球化学特征与长8段原油来源分析[J]. 现代地质, 2024, 38(5): 1306-1324.
[19]	马明, 刘池洋, 王建强, 等. 鄂尔多斯地块庆阳—鄂托克旗古隆起地质特征及其形成与演化[J]. 现代地质, 2024, 38(6): 1431-1444.
[20]	RIMMER S M, THOMPSON J A, GOODNIGHT S A, et al. Multiple controls on the preservation of organic matter in Devonian-Mississippian marine black shales: Geochemical and petrographic evidence[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2004, 215(1/2): 125-154.
[21]	ALGEO T J, MAYNARD J B. Trace-element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems[J]. Chemical Geology, 2004, 206(3/4): 289-318.
[22]	雷开宇, 刘池洋, 张龙, 等. 鄂尔多斯盆地北部侏罗系泥岩地球化学特征: 物源与古沉积环境恢复[J]. 沉积学报, 2017, 35(3): 621-636.
[23]	RUSSELL A D, MORFORD J L. The behavior of redox-sensitive metals across a laminated-massive-laminated transition in Saanich Inlet, British Columbia[J]. Marine Geology, 2001, 174(1/2/3/4): 341-354.
[24]	ZHANG T F, CHENG X Y, WANG S Y, et al. Middle Jurassic-Early Cretaceous drastic paleoenvironmental changes in the Ordos Basin: Constraints on sandstone-type uranium mineralization[J]. Ore Geology Reviews, 20,142:1-22.
[25]	李得路, 刘福田, 程敬华, 等. 鄂尔多斯盆地南部三叠系陆相油页岩稀土元素特征及其地质意义[J]. 矿物岩石地球化学通报, 2017, 36(Supp):1172.
[26]	郑荣才, 柳梅青. 鄂尔多斯盆地长6油层组古盐度研究[J]. 石油与天然气地质, 1999, 20(1): 20-25.
[27]	刘刚, 周东升. 微量元素分析在判别沉积环境中的应用: 以江汉盆地潜江组为例[J]. 石油实验地质, 2007, 29(3): 307-310, 314.
[28]	王仁民. 变质岩原岩图解判别法[M]. 北京: 地质出版社, 1987.
[29]	COUCH E L. Calculation of paleosalinities from boron and clay mineral data[J]. AAPG Bulletin, 1971, 55(10):1829-1837.
[30]	邓宏文, 钱凯. 沉积地球化学与环境分析[M]. 兰州: 甘肃科学技术出版社, 1999.
[31]	TAYLOR S R, MCLENNAN S M. The continenta1 crust:Its composition and evolution[J]. Oxford:Blackwell,1985:312.
[32]	HASKIN L A, FREY F A. Dispersed and not-so-rare earths[J]. Science, 1966, 152: 299-314. PMID
[33]	HATCH J R. LEVENTHAL J S. Relationship between inferred redox potential of the depositional environment and geochemistry of the upper pennsylvanian(Missourian) stark shale member of the dennis limestone, Wabaunsee County, Kansas, U.S.A[J]. Chemical Geology, 1992, 99(1/2/3):65-82.
[34]	TRIBOVILLARD N, BIALKOWSKI A, TYSON R V, et al. Organic facies variation in the late Kimmeridgian of the Boulonnais area(northernmost France)[J]. Marine and Petroleum Geology, 2001, 18(3): 371-389.
[35]	SCHEFFLER K, BUEHMANN D, SCHWARK L. Analysis of late Palaeozoic glacial to postglacial sedimentary successions in South Africa by geochemical proxies-Response to climate evolution and sedimentary environment[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2006, 240(1/2): 184-203.
[36]	DING J H, ZHANG J C, HUO Z P, et al. Controlling factors and formation models of organic matter accumulation for the upper Permian dalong formation black shale in the Lower Yangtze Region, South China: Constraints from geochemical evidence[J]. ACS Omega, 2021, 6(5): 3681-3692. DOI PMID
[37]	ROY D K, ROSER B P. Climatic control on the composition of Carboniferous-Permian Gondwana sediments, Khalaspir basin, Bangladesh[J]. Gondwana Research, 2013, 23(3): 1163-1171.
[38]	JONES B, MANNING D A C. Comparison of geochemical indices used for the interpretation of Palaeoredox conditions in ancient mudstones[J]. Chemical Geology, 1994, 111(1/2/3/4): 111-129.
[39]	徐小涛, 邵龙义. 利用泥质岩化学蚀变指数分析物源区风化程度时的限制因素[J]. 古地理学报, 2018, 20(3): 515-522. DOI
[40]	LEMRMANM A. Lakes:Chemistry,Geology, Physics[M]. Berlin: Springer-Verlag, 1978:79-89.
[41]	COX R, LOWE D R, CULLERS R L. The influence of sediment recycling and basement composition on evolution of mudrock chemistry in the southwestern United States[J]. Geochimica et Cosmochimica Acta, 1995, 59(14): 2919-2940.
[42]	白洁, 郑栋宇, 侯明才, 等. 全球硅酸盐化学风化－二氧化碳消耗定量模型研究进展[J]. 古地球学报, 2024, 26(2): 460-474. DOI
[43]	PANAHI A, YOUNG G M, RAINBIRD R H. Behavior of major and trace elements(including REE) during Paleoproterozoic pedogenesis and diagenetic alteration of an Archean granite near Ville Marie, Québec, Canada[J]. Geochimica et Cosmochimica Acta, 2000, 64(13): 2199-2220.

层位	样品序号	样号	岩性	SiO₂	Al₂O₃		Fe₂O₃		FeO		CaO		MgO		K₂O		Na₂O	TiO₂	P₂O₅
直罗组上段	1	FX9-b1	暗紫红色泥岩	63.52	17.88		3.99		0.30		0.26		2.13		5.75		1.85	0.83	0.055
	2	FX9-b2	暗紫红色粉砂岩	60.45	12.96		12.08		0.49		2.26		1.24		3.20		2.90	0.61	0.350
	3	FX9-b3	紫红色泥岩	52.56	22.00		8.21		0.75		0.33		2.95		6.52		0.37	0.78	0.049
	4	FX9-b4	暗紫红色粉砂质泥岩	68.43	15.77		3.41		0.31		0.51		1.43		3.97		2.36	0.81	0.100
	5	FX9-b5	暗紫红色钙质粉砂岩	74.99	8.82		3.00		0.16		3.52		0.41		2.63		2.38	0.38	0.054
	6	FX9-b6	杂色泥岩	60.09	13.59		13.35		0.40		1.10		1.17		3.54		1.86	0.63	0.470
	7	FX9-b8	紫红色泥岩	68.24	15.47		4.15		0.42		0.33		1.50		4.28		1.92	0.80	0.110
	8	FX9-b11	紫红色泥质粉砂岩	56.49	21.15		6.56		0.82		0.42		2.35		6.05		0.33	0.92	0.092
	9	FX9-b12	紫红色细粉砂岩	67.65	11.54		4.81		0.37		2.97		1.77		2.75		2.20	0.87	0.190
	10	FX9-b13	暗紫红色泥岩	73.66	12.26		2.13		0.19		1.34		0.74		3.28		2.16	0.66	0.055
	11	FX9-b15	紫红色泥岩	62.55	18.59		5.06		0.92		0.38		1.85		4.59		0.88	0.96	0.140
	12	FX9-b16	紫红色泥岩	62.83	18.97		4.25		1.02		0.39		1.87		4.65		0.62	0.95	0.120
	13	FX9-b17	紫红色泥质粉砂岩	66.71	16.36		4.33		0.75		0.34		1.65		3.85		1.35	0.94	0.110
	14	FX9-b18	紫红色粉砂岩	71.17	14.32		2.61		0.43		0.88		1.15		4.09		1.25	0.72	0.480
	15	FX9-b19	紫红色泥岩	58.24	19.04		7.90		0.56		0.32		2.25		5.62		0.41	1.04	0.100
	16	FX9-b20	暗紫红色粉砂岩	71.57	10.54		2.40		0.51		3.27		1.19		3.07		1.71	0.47	0.048
	17	FX9-b21	暗紫红色泥岩	63.61	18.39		4.41		0.70		0.40		1.82		4.39		0.83	0.89	0.094
	18	FX9-b22	暗紫红色粉砂岩	63.25	11.91		4.15		0.56		3.84		3.11		3.13		1.58	0.77	0.120
	19	FX9-b23	暗紫红色泥岩	51.43	17.64		9.74		0.82		3.31		3.07		4.25		0.63	0.79	0.170
	20	FX9-b24	暗紫红色粉砂岩	62.58	12.30		4.57		0.66		3.58		3.22		3.24		1.48	0.82	0.140
	21	FX9-b25	杂色泥岩	57.47	19.59		7.94		0.91		0.33		2.09		5.51		0.49	0.92	0.082
	22	FX9-b26	灰色泥岩	63.08	19.23		3.68		0.90		0.37		1.93		4.65		0.56	0.92	0.092
	23	FX9-b27	暗紫红色粉砂岩	69.35	14.43		4.53		0.60		0.57		1.59		3.42		0.85	0.82	0.035
	24	FX9-b28	暗紫红色泥岩	59.41	19.17		7.56		0.61		0.34		1.79		5.12		0.51	0.93	0.077
	25	FX9-b29	暗紫红色粉砂岩	65.37	7.74		4.61		0.34		5.72		2.96		1.50		2.71	0.47	0.110
	26	FX9-b32	暗紫红色粉砂岩	54.59	8.37		3.66		0.59		9.53		4.78		1.55		2.51	0.62	0.140
	27	FX9-b33	暗紫红色泥岩	51.55	16.22		9.69		1.01		3.59		3.50		3.92		0.82	0.75	0.050
	28	FX9-b36	暗紫红色泥岩	52.81	20.97		7.23		1.17		1.72		2.48		5.43		0.61	0.73	0.310
	29	FX9-b37	暗紫红色粉砂岩	73.75	12.87		3.40		0.67		0.12		1.03		3.64		1.25	0.66	0.033
	30	FX9-b38	紫红色泥岩	58.62	19.36		8.42		0.76		0.20		1.61		5.28		0.56	0.80	0.057
	31	FX9-b39	灰绿色泥岩	63.44	19.12		2.26		1.25		0.53		2.14		4.93		0.58	0.87	0.064
	32	FX9-b40	灰绿色泥岩	43.63	13.35		1.29		1.42		10.38		7.06		3.33		0.50	0.65	0.033
	33	FX9-b41	暗紫红色泥岩	62.34	17.01		7.92		1.10		0.17		1.62		4.60		0.55	0.79	0.044
	34	FX9-b42	暗红色粉砂岩	76.61	10.24		1.16		0.77		1.77		0.65		3.49		1.16	0.45	0.054
	35	FX9-b44	灰绿色泥岩	65.86	16.91		1.62		1.66		0.88		1.94		4.72		0.62	0.74	0.054
	36	FX9-b45	灰黑色粉砂质泥岩	67.91	16.12		1.31		1.72		0.92		1.51		4.63		0.64	0.76	0.560
	37	FX9-b46	灰绿色粉砂岩	74.34	12.68		1.11		1.77		0.41		1.25		4.06		0.71	0.61	0.100
	38	FX9-b47	灰绿色粉砂质泥岩	62.30	19.89		2.17		1.76		0.23		1.80		5.40		0.63	0.86	0.058
	39	FX9-b48	灰绿色粉砂质泥岩	64.35	17.17		1.64		3.11		0.25		1.65		4.54		0.80	0.84	0.100
	40	FX9-b49	灰绿色泥质粉砂质	51.17	12.63		1.16		12.52		0.86		3.28		3.28		0.50	0.63	0.220
	41	FX9-b51	灰绿色泥岩	62.55	21.65		1.40		1.04		0.16		1.17		5.44		0.56	1.08	0.066
	42	FX9-b75	灰黑色泥页岩	56.65	18.06		0.79		5.02		0.53		1.84		3.89		0.52	0.87	0.260
	43	FX9-b76	灰黑色泥页岩	48.57	16.77		1.46		10.06		0.66		2.70		3.57		0.59	0.77	0.170
	44	FX9-b77	灰黑色泥页岩	55.39	18.78		0.51		5.32		0.49		2.12		3.87		0.67	0.89	0.150
直罗组上段	1	FX9-b1	暗紫红色泥岩	0.026		3.37		99.96		0.08		8.19		8.39		11.54		69.46		0.83
直罗组上段	2	FX9-b2	暗紫红色粉砂岩	0.11		3.30		99.95		0.05		0.55		10.45		4.45		60.79		1.72
	3	FX9-b3	紫红色泥岩	0.037		5.36		99.92		0.10		8.94		7.46		20.27		75.29		0.87
	4	FX9-b4	暗紫红色粉砂质泥岩	0.021		2.85		99.97		0.10		2.80		11.03		14.76		69.75		0.79
	5	FX9-b5	暗紫红色钙质粉砂岩	0.046		3.59		99.98		0.06		0.12		21.51		3.48		50.84		1.40
	6	FX9-b6	杂色泥岩	0.130		3.63		99.96		0.03		1.06		11.62		3.08		67.65		1.59
	7	FX9-b8	紫红色泥岩	0.025		2.72		99.97		0.11		4.55		10.31		16.80		70.32		0.84
	8	FX9-b11	紫红色泥质粉砂岩	0.032		4.69		99.90		0.14		5.60		9.00		25.63		75.67		0.79
	9	FX9-b12	紫红色细粉砂岩	0.150		4.70		99.97		0.09		0.60		6.52		2.47		59.30		1.33
	10	FX9-b13	暗紫红色泥岩	0.036		3.46		99.97		0.10		0.55		16.57		5.28		64.39		0.84
	11	FX9-b15	紫红色泥岩	0.044		3.93		99.89		0.20		4.87		10.05		20.91		76.06		0.74
	12	FX9-b16	紫红色泥岩	0.040		4.17		99.88		0.27		4.79		10.14		25.50		77.02		0.67
	13	FX9-b17	紫红色泥质粉砂岩	0.039		3.49		99.92		0.19		4.85		9.92		19.23		74.70		0.76
	14	FX9-b18	紫红色粉砂岩	0.025		2.84		99.97		0.18		1.31		12.45		17.20		69.72		0.75
	15	FX9-b19	紫红色泥岩	0.028		4.43		99.94		0.08		7.03		8.46		20.00		74.99		0.92
	16	FX9-b20	暗紫红色粉砂岩	0.100		5.07		99.95		0.24		0.36		8.86		5.10		56.70		1.15
	17	FX9-b21	暗紫红色泥岩	0.033		4.38		99.95		0.18		4.55		10.10		21.21		76.59		0.69
	18	FX9-b22	暗紫红色粉砂岩	0.210		7.31		99.94		0.15		0.81		3.83		2.67		58.21		1.39
	19	FX9-b23	暗紫红色泥岩	0.220		7.85		99.92		0.09		0.93		5.75		3.73		68.29		1.24
	20	FX9-b24	暗紫红色粉砂岩	0.180		7.18		99.95		0.16		0.90		3.82		3.67		59.71		1.37
	21	FX9-b25	杂色泥岩	0.026		4.53		99.89		0.13		6.33		9.37		35.00		75.58		0.88
	22	FX9-b26	灰色泥岩	0.034		4.45		99.90		0.27		5.22		9.96		26.47		77.51		0.63
	23	FX9-b27	暗紫红色粉砂岩	0.051		3.70		99.95		0.15		2.79		9.08		11.76		74.88		0.82
	24	FX9-b28	暗紫红色泥岩	0.020		4.41		99.95		0.09		5.26		10.71		30.50		76.25		0.85
	25	FX9-b29	暗紫红色粉砂岩	0.280		8.18		99.99		0.08		0.52		2.61		1.21		43.80		2.32
	26	FX9-b32	暗紫红色粉砂岩	0.520		13.09		99.95		0.18		0.50		1.75		1.13		38.11		2.71
	27	FX9-b33	暗紫红色泥岩	0.240		8.56		99.90		0.12		0.97		4.63		4.21		66.07		1.37
	28	FX9-b36	暗紫红色泥岩	0.140		6.28		99.88		0.18		1.44		8.46		8.36		72.99		0.87
	29	FX9-b37	暗紫红色粉砂岩	0.018		2.49		99.93		0.22		8.58		12.50		37.22		71.98		0.78
	30	FX9-b38	紫红色泥岩	0.018		4.24		99.93		0.10		8.05		12.02		42.22		76.22		0.87
直罗组下段上亚段	31	FX9-b39	灰绿色泥岩	0.048		4.63		99.86		0.61		4.04		8.93		26.04		75.99		0.59
	32	FX9-b40	灰绿色泥岩	0.370		17.83		99.84		1.22		0.68		1.89		3.84		48.44		1.74
	33	FX9-b41	暗紫红色泥岩	0.024		3.72		99.89		0.15		9.53		10.50		45.83		76.18		0.92
	34	FX9-b42	暗红色粉砂岩	0.027		3.52		99.90		0.74		0.37		15.75		28.52		61.46		0.85
	35	FX9-b44	灰绿色泥岩	0.064		4.76		99.83		1.14		2.20		8.72		25.94		73.11		0.62
	36	FX9-b45	灰黑色粉砂质泥岩	0.026		3.71		99.82		1.46		1.64		10.68		66.15		72.25		0.61
	37	FX9-b46	灰绿色粉砂岩	0.032		2.73		99.80		1.77		3.05		10.14		55.31		71.00		0.64
	38	FX9-b47	灰绿色粉砂质泥岩	0.037		4.67		99.81		0.90		7.83		11.05		47.57		76.06		0.56
	39	FX9-b48	灰绿色粉砂质泥岩	0.087		5.10		99.64		2.11		6.60		10.41		35.75		75.44		0.57
	40	FX9-b49	灰绿色泥质粉砂质	0.340		12.02		98.61		12.00		3.81		3.85		36.82		73.13		0.77
	41	FX9-b51	灰绿色泥岩	0.012		4.76		99.89		0.83		7.31		18.50		86.67		77.85		0.45
延安组	42	FX9-b75	灰黑色泥页岩	0.19		10.82		99.44		7.06		3.47		9.82		26.42		78.52		0.47
	43	FX9-b76	灰黑色泥页岩	0.47		13.09		98.88		7.66		4.09		6.21		21.40		77.67		0.58
	44	FX9-b77	灰黑色泥页岩	0.15		11.07		99.41		11.59		4.33		8.86		35.47		78.87		0.46

层位	样品序号	样号	岩性	SiO₂	Al₂O₃		Fe₂O₃		FeO		CaO		MgO		K₂O		Na₂O	TiO₂	P₂O₅
直罗组上段	1	FX9-b1	暗紫红色泥岩	63.52	17.88		3.99		0.30		0.26		2.13		5.75		1.85	0.83	0.055
	2	FX9-b2	暗紫红色粉砂岩	60.45	12.96		12.08		0.49		2.26		1.24		3.20		2.90	0.61	0.350
	3	FX9-b3	紫红色泥岩	52.56	22.00		8.21		0.75		0.33		2.95		6.52		0.37	0.78	0.049
	4	FX9-b4	暗紫红色粉砂质泥岩	68.43	15.77		3.41		0.31		0.51		1.43		3.97		2.36	0.81	0.100
	5	FX9-b5	暗紫红色钙质粉砂岩	74.99	8.82		3.00		0.16		3.52		0.41		2.63		2.38	0.38	0.054
	6	FX9-b6	杂色泥岩	60.09	13.59		13.35		0.40		1.10		1.17		3.54		1.86	0.63	0.470
	7	FX9-b8	紫红色泥岩	68.24	15.47		4.15		0.42		0.33		1.50		4.28		1.92	0.80	0.110
	8	FX9-b11	紫红色泥质粉砂岩	56.49	21.15		6.56		0.82		0.42		2.35		6.05		0.33	0.92	0.092
	9	FX9-b12	紫红色细粉砂岩	67.65	11.54		4.81		0.37		2.97		1.77		2.75		2.20	0.87	0.190
	10	FX9-b13	暗紫红色泥岩	73.66	12.26		2.13		0.19		1.34		0.74		3.28		2.16	0.66	0.055
	11	FX9-b15	紫红色泥岩	62.55	18.59		5.06		0.92		0.38		1.85		4.59		0.88	0.96	0.140
	12	FX9-b16	紫红色泥岩	62.83	18.97		4.25		1.02		0.39		1.87		4.65		0.62	0.95	0.120
	13	FX9-b17	紫红色泥质粉砂岩	66.71	16.36		4.33		0.75		0.34		1.65		3.85		1.35	0.94	0.110
	14	FX9-b18	紫红色粉砂岩	71.17	14.32		2.61		0.43		0.88		1.15		4.09		1.25	0.72	0.480
	15	FX9-b19	紫红色泥岩	58.24	19.04		7.90		0.56		0.32		2.25		5.62		0.41	1.04	0.100
	16	FX9-b20	暗紫红色粉砂岩	71.57	10.54		2.40		0.51		3.27		1.19		3.07		1.71	0.47	0.048
	17	FX9-b21	暗紫红色泥岩	63.61	18.39		4.41		0.70		0.40		1.82		4.39		0.83	0.89	0.094
	18	FX9-b22	暗紫红色粉砂岩	63.25	11.91		4.15		0.56		3.84		3.11		3.13		1.58	0.77	0.120
	19	FX9-b23	暗紫红色泥岩	51.43	17.64		9.74		0.82		3.31		3.07		4.25		0.63	0.79	0.170
	20	FX9-b24	暗紫红色粉砂岩	62.58	12.30		4.57		0.66		3.58		3.22		3.24		1.48	0.82	0.140
	21	FX9-b25	杂色泥岩	57.47	19.59		7.94		0.91		0.33		2.09		5.51		0.49	0.92	0.082
	22	FX9-b26	灰色泥岩	63.08	19.23		3.68		0.90		0.37		1.93		4.65		0.56	0.92	0.092
	23	FX9-b27	暗紫红色粉砂岩	69.35	14.43		4.53		0.60		0.57		1.59		3.42		0.85	0.82	0.035
	24	FX9-b28	暗紫红色泥岩	59.41	19.17		7.56		0.61		0.34		1.79		5.12		0.51	0.93	0.077
	25	FX9-b29	暗紫红色粉砂岩	65.37	7.74		4.61		0.34		5.72		2.96		1.50		2.71	0.47	0.110
	26	FX9-b32	暗紫红色粉砂岩	54.59	8.37		3.66		0.59		9.53		4.78		1.55		2.51	0.62	0.140
	27	FX9-b33	暗紫红色泥岩	51.55	16.22		9.69		1.01		3.59		3.50		3.92		0.82	0.75	0.050
	28	FX9-b36	暗紫红色泥岩	52.81	20.97		7.23		1.17		1.72		2.48		5.43		0.61	0.73	0.310
	29	FX9-b37	暗紫红色粉砂岩	73.75	12.87		3.40		0.67		0.12		1.03		3.64		1.25	0.66	0.033
	30	FX9-b38	紫红色泥岩	58.62	19.36		8.42		0.76		0.20		1.61		5.28		0.56	0.80	0.057
	31	FX9-b39	灰绿色泥岩	63.44	19.12		2.26		1.25		0.53		2.14		4.93		0.58	0.87	0.064
	32	FX9-b40	灰绿色泥岩	43.63	13.35		1.29		1.42		10.38		7.06		3.33		0.50	0.65	0.033
	33	FX9-b41	暗紫红色泥岩	62.34	17.01		7.92		1.10		0.17		1.62		4.60		0.55	0.79	0.044
	34	FX9-b42	暗红色粉砂岩	76.61	10.24		1.16		0.77		1.77		0.65		3.49		1.16	0.45	0.054
	35	FX9-b44	灰绿色泥岩	65.86	16.91		1.62		1.66		0.88		1.94		4.72		0.62	0.74	0.054
	36	FX9-b45	灰黑色粉砂质泥岩	67.91	16.12		1.31		1.72		0.92		1.51		4.63		0.64	0.76	0.560
	37	FX9-b46	灰绿色粉砂岩	74.34	12.68		1.11		1.77		0.41		1.25		4.06		0.71	0.61	0.100
	38	FX9-b47	灰绿色粉砂质泥岩	62.30	19.89		2.17		1.76		0.23		1.80		5.40		0.63	0.86	0.058
	39	FX9-b48	灰绿色粉砂质泥岩	64.35	17.17		1.64		3.11		0.25		1.65		4.54		0.80	0.84	0.100
	40	FX9-b49	灰绿色泥质粉砂质	51.17	12.63		1.16		12.52		0.86		3.28		3.28		0.50	0.63	0.220
	41	FX9-b51	灰绿色泥岩	62.55	21.65		1.40		1.04		0.16		1.17		5.44		0.56	1.08	0.066
	42	FX9-b75	灰黑色泥页岩	56.65	18.06		0.79		5.02		0.53		1.84		3.89		0.52	0.87	0.260
	43	FX9-b76	灰黑色泥页岩	48.57	16.77		1.46		10.06		0.66		2.70		3.57		0.59	0.77	0.170
	44	FX9-b77	灰黑色泥页岩	55.39	18.78		0.51		5.32		0.49		2.12		3.87		0.67	0.89	0.150
直罗组上段	1	FX9-b1	暗紫红色泥岩	0.026		3.37		99.96		0.08		8.19		8.39		11.54		69.46		0.83
直罗组上段	2	FX9-b2	暗紫红色粉砂岩	0.11		3.30		99.95		0.05		0.55		10.45		4.45		60.79		1.72
	3	FX9-b3	紫红色泥岩	0.037		5.36		99.92		0.10		8.94		7.46		20.27		75.29		0.87
	4	FX9-b4	暗紫红色粉砂质泥岩	0.021		2.85		99.97		0.10		2.80		11.03		14.76		69.75		0.79
	5	FX9-b5	暗紫红色钙质粉砂岩	0.046		3.59		99.98		0.06		0.12		21.51		3.48		50.84		1.40
	6	FX9-b6	杂色泥岩	0.130		3.63		99.96		0.03		1.06		11.62		3.08		67.65		1.59
	7	FX9-b8	紫红色泥岩	0.025		2.72		99.97		0.11		4.55		10.31		16.80		70.32		0.84
	8	FX9-b11	紫红色泥质粉砂岩	0.032		4.69		99.90		0.14		5.60		9.00		25.63		75.67		0.79
	9	FX9-b12	紫红色细粉砂岩	0.150		4.70		99.97		0.09		0.60		6.52		2.47		59.30		1.33
	10	FX9-b13	暗紫红色泥岩	0.036		3.46		99.97		0.10		0.55		16.57		5.28		64.39		0.84
	11	FX9-b15	紫红色泥岩	0.044		3.93		99.89		0.20		4.87		10.05		20.91		76.06		0.74
	12	FX9-b16	紫红色泥岩	0.040		4.17		99.88		0.27		4.79		10.14		25.50		77.02		0.67
	13	FX9-b17	紫红色泥质粉砂岩	0.039		3.49		99.92		0.19		4.85		9.92		19.23		74.70		0.76
	14	FX9-b18	紫红色粉砂岩	0.025		2.84		99.97		0.18		1.31		12.45		17.20		69.72		0.75
	15	FX9-b19	紫红色泥岩	0.028		4.43		99.94		0.08		7.03		8.46		20.00		74.99		0.92
	16	FX9-b20	暗紫红色粉砂岩	0.100		5.07		99.95		0.24		0.36		8.86		5.10		56.70		1.15
	17	FX9-b21	暗紫红色泥岩	0.033		4.38		99.95		0.18		4.55		10.10		21.21		76.59		0.69
	18	FX9-b22	暗紫红色粉砂岩	0.210		7.31		99.94		0.15		0.81		3.83		2.67		58.21		1.39
	19	FX9-b23	暗紫红色泥岩	0.220		7.85		99.92		0.09		0.93		5.75		3.73		68.29		1.24
	20	FX9-b24	暗紫红色粉砂岩	0.180		7.18		99.95		0.16		0.90		3.82		3.67		59.71		1.37
	21	FX9-b25	杂色泥岩	0.026		4.53		99.89		0.13		6.33		9.37		35.00		75.58		0.88
	22	FX9-b26	灰色泥岩	0.034		4.45		99.90		0.27		5.22		9.96		26.47		77.51		0.63
	23	FX9-b27	暗紫红色粉砂岩	0.051		3.70		99.95		0.15		2.79		9.08		11.76		74.88		0.82
	24	FX9-b28	暗紫红色泥岩	0.020		4.41		99.95		0.09		5.26		10.71		30.50		76.25		0.85
	25	FX9-b29	暗紫红色粉砂岩	0.280		8.18		99.99		0.08		0.52		2.61		1.21		43.80		2.32
	26	FX9-b32	暗紫红色粉砂岩	0.520		13.09		99.95		0.18		0.50		1.75		1.13		38.11		2.71
	27	FX9-b33	暗紫红色泥岩	0.240		8.56		99.90		0.12		0.97		4.63		4.21		66.07		1.37
	28	FX9-b36	暗紫红色泥岩	0.140		6.28		99.88		0.18		1.44		8.46		8.36		72.99		0.87
	29	FX9-b37	暗紫红色粉砂岩	0.018		2.49		99.93		0.22		8.58		12.50		37.22		71.98		0.78
	30	FX9-b38	紫红色泥岩	0.018		4.24		99.93		0.10		8.05		12.02		42.22		76.22		0.87
直罗组下段上亚段	31	FX9-b39	灰绿色泥岩	0.048		4.63		99.86		0.61		4.04		8.93		26.04		75.99		0.59
	32	FX9-b40	灰绿色泥岩	0.370		17.83		99.84		1.22		0.68		1.89		3.84		48.44		1.74
	33	FX9-b41	暗紫红色泥岩	0.024		3.72		99.89		0.15		9.53		10.50		45.83		76.18		0.92
	34	FX9-b42	暗红色粉砂岩	0.027		3.52		99.90		0.74		0.37		15.75		28.52		61.46		0.85
	35	FX9-b44	灰绿色泥岩	0.064		4.76		99.83		1.14		2.20		8.72		25.94		73.11		0.62
	36	FX9-b45	灰黑色粉砂质泥岩	0.026		3.71		99.82		1.46		1.64		10.68		66.15		72.25		0.61
	37	FX9-b46	灰绿色粉砂岩	0.032		2.73		99.80		1.77		3.05		10.14		55.31		71.00		0.64
	38	FX9-b47	灰绿色粉砂质泥岩	0.037		4.67		99.81		0.90		7.83		11.05		47.57		76.06		0.56
	39	FX9-b48	灰绿色粉砂质泥岩	0.087		5.10		99.64		2.11		6.60		10.41		35.75		75.44		0.57
	40	FX9-b49	灰绿色泥质粉砂质	0.340		12.02		98.61		12.00		3.81		3.85		36.82		73.13		0.77
	41	FX9-b51	灰绿色泥岩	0.012		4.76		99.89		0.83		7.31		18.50		86.67		77.85		0.45
延安组	42	FX9-b75	灰黑色泥页岩	0.19		10.82		99.44		7.06		3.47		9.82		26.42		78.52		0.47
	43	FX9-b76	灰黑色泥页岩	0.47		13.09		98.88		7.66		4.09		6.21		21.40		77.67		0.58
	44	FX9-b77	灰黑色泥页岩	0.15		11.07		99.41		11.59		4.33		8.86		35.47		78.87		0.46

层位	样品顺序	样号	Cu	Pb	Zn	Cr	Ni	Co	Cd		Li		Rb		Cs		Mo	Sr		Ba		V
直罗组上段	1	FX9-b1	14.1	14.9	111	98.1	46.9	18.9	0.05		49.5		203		14		2.82	103		474		91
	2	FX9-b2	10.8	55.5	45.5	52.4	25.5	14.1	0.05		18.7		101		5.63		5.76	159		513		184
	3	FX9-b3	14.3	18.6	108	82.4	41.4	17.7	0.02		48.5		263		20.3		2.56	150		355		143
	4	FX9-b4	16.3	24.3	70.1	78.2	34.7	11.4	0.06		24.6		165		13		2.54	174		468		82
	5	FX9-b5	7.58	23.6	11.8	27.9	7.79	3.49	0.04		7.44		82		2.94		3.31	556		662		53.3
	6	FX9-b6	19.4	49.6	75.5	48.9	39	17.1	0.06		16.3		136		9.27		4.45	799		614		265
	7	FX9-b8	15.8	20	90.9	69.7	37.3	15.9	0.05		27.4		169		13		2.12	152		491		73.9
	8	FX9-b11	14.9	31.2	144	100	63.2	30.4	0.04		56.2		245		22.8		4	219		464		119
	9	FX9-b12	7.84	36.3	29.5	52.9	14.6	7.58	0.09		10.8		98		4.73		3.31	1430		753		136
	10	FX9-b13	12.2	24.3	40.6	56.6	14.3	6.58	0.1		43		127		11.6		3.9	187		1070		70.2
	11	FX9-b15	18.7	32	109	105	54.3	19.1	0.05		76.3		201		16.9		3.24	158		516		125
	12	FX9-b16	22.5	29	119	119	57.5	20	0.05		88.3		208		20.1		4.6	161		536		152
	13	FX9-b17	20.6	25.2	104	111	50.2	18.2	0.05		89		172		16		2.91	127		475		119
	14	FX9-b18	19	20.7	81.3	64.2	35.2	13.1	0.06		45.5		178		13.6		1.21	206		568		71.5
	15	FX9-b19	25	37.6	188	105	55.4	26.9	0.05		71.7		265		31.6		2.68	173		588		142
	16	FX9-b20	13.4	21.2	43.4	41.7	17.9	8.8	0.05		19.4		117		8.42		2.74	141		682		54.2
	17	FX9-b21	22.5	25	114	86.3	42.4	17.3	0.04		77.9		198		17.5		2.1	126		640		100
	18	FX9-b22	15.4	27.2	67.6	58	26.1	12.8	0.09		29.3		130		11.3		1.92	111		457		85.8
	19	FX9-b23	17.6	32.4	96.2	95.2	41	17.3	0.08		67.8		187		16		3.12	182		427		182
	20	FX9-b24	15.2	30	69.6	61	28.4	13.2	0.09		37.2		139		11.5		2.62	106		473		84
	21	FX9-b25	18.9	41.8	168	100	51.1	21.3	0.05		83.7		276		28.2		3.87	136		444		157
	22	FX9-b26	17.6	23	124	110	53.7	18.9	0.05		94.3		221		19.5		1.97	171		520		114
	23	FX9-b27	20.7	19.4	91.3	94.1	46.8	16.8	0.06		88.4		154		14.9		1.86	127		555		107
	24	FX9-b28	17.2	32.1	127	92.7	44.9	17	0.04		94.4		249		24.3		3.17	194		418		150
	25	FX9-b29	9.4	16.5	28.4	23.8	8.82	8.15	0.06		11.8		67		9		1.45	85		521		72.6
	26	FX9-b32	10	21	56.9	41.2	15.3	14	0.11		15.1		70		6.24		1.59	122		430		75.2
	27	FX9-b33	17.4	41.1	94.1	85.8	40.6	18.1	0.08		60.1		186		16.1		3.95	206		404		171
	28	FX9-b36	12.3	30.4	106	84	44.5	20.1	0.04		73.9		273		28.3		2.94	404		481		133
	29	FX9-b37	13.1	20.3	61.6	59.4	26.7	11.4	0.04		46.8		155		13.9		2.19	109		470		57.7
	30	FX9-b38	21.4	32.3	98.2	81.7	35	12.1	0.04		55.5		286		31.7		1.91	140		402		143
	31	FX9-b39	38.9	23	102	87.9	41.2	15.4	0.05		74		244		22.4		1.34	145		502		105
	32	FX9-b40	101	24.5	75.6	68.8	27	12.9	0.13		50.7		161		16.6		2	407		373		77.5
	33	FX9-b41	12.1	36.4	90.1	81.3	37.9	15.1	0.05		68.3		219		24		4.58	119		524		112
	34	FX9-b42	21	19.6	28.5	33.1	13.4	6.25	0.06		17.6		133		9.17		1.33	214		579		39
	35	FX9-b44	80.1	17.4	72.6	69	36.6	11.6	0.05		53		233		36.4		1.88	128		544		88.4
	36	FX9-b45	28.6	17.5	73.2	76	41.9	14.9	0.05		47.7		227		25.8		1.42	131		600		98.3
	37	FX9-b46	29.2	18.2	59.2	55.3	29.6	11.2	0.06		36.9		170		17.4		0.74	149		711		66.2
	38	FX9-b47	38.1	16.6	66.2	78.7	38.7	10.7	0.04		58.3		297		30.6		1.22	151		717		112
	39	FX9-b48	32.1	18.5	56.5	76.7	36.4	18.7	0.05		54.8		220		23.7		2.01	159		531		108
	40	FX9-b49	10.9	13.3	39.7	59	25.9	13.8	0.04		47		147		13.6		3.17	164		410		86.2
	41	FX9-b51	13.2	20.4	28.9	91.3	64.8	25.2	0.06		114		272		32.4		2.22	237		532		118
	42	FX9-b75	27.2	21	145	76.2	26.2	11.6	0.13		86.5		164		14.6		2.75	386		510		117
	43	FX9-b76	25.1	23.4	92.6	72.6	29.8	15.5	0.06		77.9		152		14.2		3.05	231		510		110
	44	FX9-b77	32.2	34.1	126	71.5	36.3	20.6	0.1		86		168		15.5		2.71	286		507		109
层位	样品顺序	样号	Sc	B	Ga	U	Th	校正B 含量		相当B 含量		Sr/Ba		U/Th		V/ (V+Ni)			V/Cr	Ni/Co	Sr/Cu
直罗组上段	1	FX9-b1	15.7	152	27.3	3.01	15.9	224.70		257.79		0.22		0.19		0.66			0.93	2.48	7.30
	2	FX9-b2	13.4	83.1	15	4.51	9.76	220.73		178.16		0.31		0.46		0.88			3.51	1.81	14.72
	3	FX9-b3	14.5	261	26.8	3.59	14.9	340.26		447.31		0.42		0.24		0.78			1.74	2.34	10.49
	4	FX9-b4	13.6	154	20.6	2.77	14.9	329.72		292.29		0.37		0.19		0.70			1.05	3.04	10.67
	5	FX9-b5	6.74	36.7	8.26	1.66	8.31	118.61		89.78		0.84		0.20		0.87			1.91	2.23	73.35
	6	FX9-b6	13	104	19.7	3.76	13.4	249.72		209.85		1.30		0.28		0.87			5.42	2.28	41.19
	7	FX9-b8	1.5	142	20	2.76	14.5	28.01		260.30		0.31		0.19		0.66			1.06	2.35	9.62
	8	FX9-b11	16.3	264	29.8	4.14	18	370.91		447.75		0.47		0.23		0.65			1.19	2.08	14.70
	9	FX9-b12	13.8	50.9	14.6	6.88	13.5	157.33		120.67		1.90		0.51		0.90			2.57	1.93	182.40
	10	FX9-b13	10.8	114	13.3	4.62	17.4	295.43		240.68		0.17		0.27		0.83			1.24	2.17	15.33
	11	FX9-b15	15.7	222	25.1	3.95	18.9	411.11		395.78		0.31		0.21		0.70			1.19	2.84	8.45
	12	FX9-b16	18	248	28	3.92	20.5	453.33		440.09		0.30		0.19		0.73			1.28	2.88	7.16
	13	FX9-b17	15.2	221	21	3.29	15.8	487.92		426.01		0.27		0.21		0.70			1.07	2.76	6.17
	14	FX9-b18	11.5	158	19.1	2.84	13.8	328.36		295.62		0.36		0.21		0.67			1.11	2.69	10.84
	15	FX9-b19	19.2	219	27.1	4.37	28.7	331.23		372.02		0.29		0.15		0.72			1.35	2.06	6.92
	16	FX9-b20	9.64	73.1	12.1	2.64	9.79	202.39		160.92		0.21		0.27		0.75			1.30	2.03	10.52
	17	FX9-b21	14.2	156	23.8	3.76	17.1	302.05		282.94		0.20		0.22		0.70			1.16	2.45	5.60
	18	FX9-b22	11.7	103	15.4	2.37	12.7	279.71		223.94		0.24		0.19		0.77			1.48	2.04	7.21
	19	FX9-b23	18.9	177	24.6	3.28	16.4	354.00		325.45		0.43		0.20		0.82			1.91	2.37	10.34
	20	FX9-b24	6.13	102	15.7	2.56	11.3	267.59		216.99		0.22		0.23		0.75			1.38	2.15	6.97
	21	FX9-b25	17.9	219	28.3	3.8	26.6	337.84		372.82		0.31		0.14		0.75			1.57	2.40	7.20
	22	FX9-b26	16.5	193	25.6	3.39	19.1	352.80		342.49		0.33		0.18		0.68			1.04	2.84	9.72
	23	FX9-b27	13.3	162	18.9	2.59	15	402.63		333.50		0.23		0.17		0.70			1.14	2.79	6.14
	24	FX9-b28	16.4	188	25.8	3.31	23.3	312.11		324.31		0.46		0.14		0.77			1.62	2.64	11.28
	25	FX9-b29	8.31	55.4	6.9	3.22	8.65	313.93		211.56		0.16		0.37		0.89			3.05	1.08	9.04
	26	FX9-b32	9.58	54.2	10.1	1.76	8.66	297.23		201.28		0.28		0.2		0.83			1.83	1.09	12.20
	27	FX9-b33	15.9	147	20.7	5.10	14.30	318.75		280.77		0.51		0.36		0.81			1.99	2.24	11.84
	28	FX9-b36	17.2	198	29.5	4.90	19.80	309.94		337.74		0.84		0.25		0.75			1.58	2.21	32.85
	29	FX9-b37	9.97	106	14.6	2.55	11.40	247.53		210.56		0.23		0.22		0.68			0.97	2.34	8.32
	30	FX9-b38	14.6	190	24.7	4.77	20.30	305.87		325.63		0.35		0.23		0.80			1.75	2.89	6.54
	31	FX9-b39	14	183	25.1	3.99	20.2	315.52		318.79		0.29		0.20		0.72			1.19	2.68	3.73
	32	FX9-b40	14.9	147	17.3	4.70	14.2	375.23		307.50		1.09		0.33		0.74			1.13	2.09	4.03
	33	FX9-b41	13.9	191	23.6	5.02	18.4	352.93		340.25		0.23		0.27		0.75			1.38	2.51	9.83
	34	FX9-b42	6.89	63.1	11.2	2.35	9.66	153.68		128.37		0.37		0.24		0.74			1.18	2.14	10.19
	35	FX9-b44	11.4	150	21.6	4.49	17.0	270.13		264.83		0.24		0.26		0.71			1.28	3.16	1.60
	36	FX9-b45	12.7	163	22.5	4.35	17.9	299.24		289.69		0.22		0.24		0.70			1.29	2.81	4.58
	37	FX9-b46	8.84	103	16.0	3.77	12.8	215.64		193.38		0.21		0.29		0.69			1.20	2.64	5.10
	38	FX9-b47	11.9	197	25.1	2.85	15.2	310.09		336.31		0.21		0.19		0.74			1.42	3.62	3.96
	39	FX9-b48	14.7	222	23.5	2.81	16.8	415.64		397.39		0.30		0.17		0.75			1.41	1.95	4.95
	40	FX9-b49	11.4	126	17.0	2.56	11.8	326.52		266.02		0.40		0.22		0.77			1.46	1.88	15.05
	41	FX9-b51	13.7	248	32.2	7.78	17.7	387.50		422.91		0.45		0.44		0.65			1.29	2.57	17.95
	42	FX9-b75	14.3	147	23.5	3.92	15.5	321.21		281.87		0.76		0.25		0.82			1.54	2.26	14.19
	43	FX9-b76	14.6	111	22.6	3.33	14.8	264.29		222.9		0.45		0.23		0.79			1.52	1.92	9.20
	44	FX9-b77	13.7	110	23.8	4.11	16.4	241.60		211.48		0.56		0.25		0.75			1.52	1.76	8.88

层位	样品顺序	样号	Cu	Pb	Zn	Cr	Ni	Co	Cd		Li		Rb		Cs		Mo	Sr		Ba		V
直罗组上段	1	FX9-b1	14.1	14.9	111	98.1	46.9	18.9	0.05		49.5		203		14		2.82	103		474		91
	2	FX9-b2	10.8	55.5	45.5	52.4	25.5	14.1	0.05		18.7		101		5.63		5.76	159		513		184
	3	FX9-b3	14.3	18.6	108	82.4	41.4	17.7	0.02		48.5		263		20.3		2.56	150		355		143
	4	FX9-b4	16.3	24.3	70.1	78.2	34.7	11.4	0.06		24.6		165		13		2.54	174		468		82
	5	FX9-b5	7.58	23.6	11.8	27.9	7.79	3.49	0.04		7.44		82		2.94		3.31	556		662		53.3
	6	FX9-b6	19.4	49.6	75.5	48.9	39	17.1	0.06		16.3		136		9.27		4.45	799		614		265
	7	FX9-b8	15.8	20	90.9	69.7	37.3	15.9	0.05		27.4		169		13		2.12	152		491		73.9
	8	FX9-b11	14.9	31.2	144	100	63.2	30.4	0.04		56.2		245		22.8		4	219		464		119
	9	FX9-b12	7.84	36.3	29.5	52.9	14.6	7.58	0.09		10.8		98		4.73		3.31	1430		753		136
	10	FX9-b13	12.2	24.3	40.6	56.6	14.3	6.58	0.1		43		127		11.6		3.9	187		1070		70.2
	11	FX9-b15	18.7	32	109	105	54.3	19.1	0.05		76.3		201		16.9		3.24	158		516		125
	12	FX9-b16	22.5	29	119	119	57.5	20	0.05		88.3		208		20.1		4.6	161		536		152
	13	FX9-b17	20.6	25.2	104	111	50.2	18.2	0.05		89		172		16		2.91	127		475		119
	14	FX9-b18	19	20.7	81.3	64.2	35.2	13.1	0.06		45.5		178		13.6		1.21	206		568		71.5
	15	FX9-b19	25	37.6	188	105	55.4	26.9	0.05		71.7		265		31.6		2.68	173		588		142
	16	FX9-b20	13.4	21.2	43.4	41.7	17.9	8.8	0.05		19.4		117		8.42		2.74	141		682		54.2
	17	FX9-b21	22.5	25	114	86.3	42.4	17.3	0.04		77.9		198		17.5		2.1	126		640		100
	18	FX9-b22	15.4	27.2	67.6	58	26.1	12.8	0.09		29.3		130		11.3		1.92	111		457		85.8
	19	FX9-b23	17.6	32.4	96.2	95.2	41	17.3	0.08		67.8		187		16		3.12	182		427		182
	20	FX9-b24	15.2	30	69.6	61	28.4	13.2	0.09		37.2		139		11.5		2.62	106		473		84
	21	FX9-b25	18.9	41.8	168	100	51.1	21.3	0.05		83.7		276		28.2		3.87	136		444		157
	22	FX9-b26	17.6	23	124	110	53.7	18.9	0.05		94.3		221		19.5		1.97	171		520		114
	23	FX9-b27	20.7	19.4	91.3	94.1	46.8	16.8	0.06		88.4		154		14.9		1.86	127		555		107
	24	FX9-b28	17.2	32.1	127	92.7	44.9	17	0.04		94.4		249		24.3		3.17	194		418		150
	25	FX9-b29	9.4	16.5	28.4	23.8	8.82	8.15	0.06		11.8		67		9		1.45	85		521		72.6
	26	FX9-b32	10	21	56.9	41.2	15.3	14	0.11		15.1		70		6.24		1.59	122		430		75.2
	27	FX9-b33	17.4	41.1	94.1	85.8	40.6	18.1	0.08		60.1		186		16.1		3.95	206		404		171
	28	FX9-b36	12.3	30.4	106	84	44.5	20.1	0.04		73.9		273		28.3		2.94	404		481		133
	29	FX9-b37	13.1	20.3	61.6	59.4	26.7	11.4	0.04		46.8		155		13.9		2.19	109		470		57.7
	30	FX9-b38	21.4	32.3	98.2	81.7	35	12.1	0.04		55.5		286		31.7		1.91	140		402		143
	31	FX9-b39	38.9	23	102	87.9	41.2	15.4	0.05		74		244		22.4		1.34	145		502		105
	32	FX9-b40	101	24.5	75.6	68.8	27	12.9	0.13		50.7		161		16.6		2	407		373		77.5
	33	FX9-b41	12.1	36.4	90.1	81.3	37.9	15.1	0.05		68.3		219		24		4.58	119		524		112
	34	FX9-b42	21	19.6	28.5	33.1	13.4	6.25	0.06		17.6		133		9.17		1.33	214		579		39
	35	FX9-b44	80.1	17.4	72.6	69	36.6	11.6	0.05		53		233		36.4		1.88	128		544		88.4
	36	FX9-b45	28.6	17.5	73.2	76	41.9	14.9	0.05		47.7		227		25.8		1.42	131		600		98.3
	37	FX9-b46	29.2	18.2	59.2	55.3	29.6	11.2	0.06		36.9		170		17.4		0.74	149		711		66.2
	38	FX9-b47	38.1	16.6	66.2	78.7	38.7	10.7	0.04		58.3		297		30.6		1.22	151		717		112
	39	FX9-b48	32.1	18.5	56.5	76.7	36.4	18.7	0.05		54.8		220		23.7		2.01	159		531		108
	40	FX9-b49	10.9	13.3	39.7	59	25.9	13.8	0.04		47		147		13.6		3.17	164		410		86.2
	41	FX9-b51	13.2	20.4	28.9	91.3	64.8	25.2	0.06		114		272		32.4		2.22	237		532		118
	42	FX9-b75	27.2	21	145	76.2	26.2	11.6	0.13		86.5		164		14.6		2.75	386		510		117
	43	FX9-b76	25.1	23.4	92.6	72.6	29.8	15.5	0.06		77.9		152		14.2		3.05	231		510		110
	44	FX9-b77	32.2	34.1	126	71.5	36.3	20.6	0.1		86		168		15.5		2.71	286		507		109
层位	样品顺序	样号	Sc	B	Ga	U	Th	校正B 含量		相当B 含量		Sr/Ba		U/Th		V/ (V+Ni)			V/Cr	Ni/Co	Sr/Cu
直罗组上段	1	FX9-b1	15.7	152	27.3	3.01	15.9	224.70		257.79		0.22		0.19		0.66			0.93	2.48	7.30
	2	FX9-b2	13.4	83.1	15	4.51	9.76	220.73		178.16		0.31		0.46		0.88			3.51	1.81	14.72
	3	FX9-b3	14.5	261	26.8	3.59	14.9	340.26		447.31		0.42		0.24		0.78			1.74	2.34	10.49
	4	FX9-b4	13.6	154	20.6	2.77	14.9	329.72		292.29		0.37		0.19		0.70			1.05	3.04	10.67
	5	FX9-b5	6.74	36.7	8.26	1.66	8.31	118.61		89.78		0.84		0.20		0.87			1.91	2.23	73.35
	6	FX9-b6	13	104	19.7	3.76	13.4	249.72		209.85		1.30		0.28		0.87			5.42	2.28	41.19
	7	FX9-b8	1.5	142	20	2.76	14.5	28.01		260.30		0.31		0.19		0.66			1.06	2.35	9.62
	8	FX9-b11	16.3	264	29.8	4.14	18	370.91		447.75		0.47		0.23		0.65			1.19	2.08	14.70
	9	FX9-b12	13.8	50.9	14.6	6.88	13.5	157.33		120.67		1.90		0.51		0.90			2.57	1.93	182.40
	10	FX9-b13	10.8	114	13.3	4.62	17.4	295.43		240.68		0.17		0.27		0.83			1.24	2.17	15.33
	11	FX9-b15	15.7	222	25.1	3.95	18.9	411.11		395.78		0.31		0.21		0.70			1.19	2.84	8.45
	12	FX9-b16	18	248	28	3.92	20.5	453.33		440.09		0.30		0.19		0.73			1.28	2.88	7.16
	13	FX9-b17	15.2	221	21	3.29	15.8	487.92		426.01		0.27		0.21		0.70			1.07	2.76	6.17
	14	FX9-b18	11.5	158	19.1	2.84	13.8	328.36		295.62		0.36		0.21		0.67			1.11	2.69	10.84
	15	FX9-b19	19.2	219	27.1	4.37	28.7	331.23		372.02		0.29		0.15		0.72			1.35	2.06	6.92
	16	FX9-b20	9.64	73.1	12.1	2.64	9.79	202.39		160.92		0.21		0.27		0.75			1.30	2.03	10.52
	17	FX9-b21	14.2	156	23.8	3.76	17.1	302.05		282.94		0.20		0.22		0.70			1.16	2.45	5.60
	18	FX9-b22	11.7	103	15.4	2.37	12.7	279.71		223.94		0.24		0.19		0.77			1.48	2.04	7.21
	19	FX9-b23	18.9	177	24.6	3.28	16.4	354.00		325.45		0.43		0.20		0.82			1.91	2.37	10.34
	20	FX9-b24	6.13	102	15.7	2.56	11.3	267.59		216.99		0.22		0.23		0.75			1.38	2.15	6.97
	21	FX9-b25	17.9	219	28.3	3.8	26.6	337.84		372.82		0.31		0.14		0.75			1.57	2.40	7.20
	22	FX9-b26	16.5	193	25.6	3.39	19.1	352.80		342.49		0.33		0.18		0.68			1.04	2.84	9.72
	23	FX9-b27	13.3	162	18.9	2.59	15	402.63		333.50		0.23		0.17		0.70			1.14	2.79	6.14
	24	FX9-b28	16.4	188	25.8	3.31	23.3	312.11		324.31		0.46		0.14		0.77			1.62	2.64	11.28
	25	FX9-b29	8.31	55.4	6.9	3.22	8.65	313.93		211.56		0.16		0.37		0.89			3.05	1.08	9.04
	26	FX9-b32	9.58	54.2	10.1	1.76	8.66	297.23		201.28		0.28		0.2		0.83			1.83	1.09	12.20
	27	FX9-b33	15.9	147	20.7	5.10	14.30	318.75		280.77		0.51		0.36		0.81			1.99	2.24	11.84
	28	FX9-b36	17.2	198	29.5	4.90	19.80	309.94		337.74		0.84		0.25		0.75			1.58	2.21	32.85
	29	FX9-b37	9.97	106	14.6	2.55	11.40	247.53		210.56		0.23		0.22		0.68			0.97	2.34	8.32
	30	FX9-b38	14.6	190	24.7	4.77	20.30	305.87		325.63		0.35		0.23		0.80			1.75	2.89	6.54
	31	FX9-b39	14	183	25.1	3.99	20.2	315.52		318.79		0.29		0.20		0.72			1.19	2.68	3.73
	32	FX9-b40	14.9	147	17.3	4.70	14.2	375.23		307.50		1.09		0.33		0.74			1.13	2.09	4.03
	33	FX9-b41	13.9	191	23.6	5.02	18.4	352.93		340.25		0.23		0.27		0.75			1.38	2.51	9.83
	34	FX9-b42	6.89	63.1	11.2	2.35	9.66	153.68		128.37		0.37		0.24		0.74			1.18	2.14	10.19
	35	FX9-b44	11.4	150	21.6	4.49	17.0	270.13		264.83		0.24		0.26		0.71			1.28	3.16	1.60
	36	FX9-b45	12.7	163	22.5	4.35	17.9	299.24		289.69		0.22		0.24		0.70			1.29	2.81	4.58
	37	FX9-b46	8.84	103	16.0	3.77	12.8	215.64		193.38		0.21		0.29		0.69			1.20	2.64	5.10
	38	FX9-b47	11.9	197	25.1	2.85	15.2	310.09		336.31		0.21		0.19		0.74			1.42	3.62	3.96
	39	FX9-b48	14.7	222	23.5	2.81	16.8	415.64		397.39		0.30		0.17		0.75			1.41	1.95	4.95
	40	FX9-b49	11.4	126	17.0	2.56	11.8	326.52		266.02		0.40		0.22		0.77			1.46	1.88	15.05
	41	FX9-b51	13.7	248	32.2	7.78	17.7	387.50		422.91		0.45		0.44		0.65			1.29	2.57	17.95
	42	FX9-b75	14.3	147	23.5	3.92	15.5	321.21		281.87		0.76		0.25		0.82			1.54	2.26	14.19
	43	FX9-b76	14.6	111	22.6	3.33	14.8	264.29		222.9		0.45		0.23		0.79			1.52	1.92	9.20
	44	FX9-b77	13.7	110	23.8	4.11	16.4	241.60		211.48		0.56		0.25		0.75			1.52	1.76	8.88