Element Geochemical Characteristics of Carboniferous Shale in Wuwei Basin and Its Significance

Abstract

Abstract:

By comprehensively analyzing the major element, microelement and rare earth element of carboniferous shale samples which from Chouniugou Formation and Yanghugou Formation in Wuwei Basin and its surrounded area, and discussing the significance of the result for provenance, weathering denudation degree and tectonic setting. The research founded that the element characteristics of Carboniferous shale in Wuwei Basin is as follaws: (1) The major element is rich in SiO₂ and Al₂O₃, and loss of MgO and Fe₂O₃. (2) The upper crust standardization of microelements is regularly change. U, Th and Cr are rich, and Ba, Nb and Zr are loss. (3) The distribution pattern of rare earth element (REE) is about the same as upper crust, which is right deviation in overall, rich in LREE, stabilize in HREE and negative anomaly Eu. The three findings show that the source rock is mainly from upper crust. Weathering index (CIA) value of 68.81-90.17, with a mean of 83.9, reflects the research area suffered moderate weathering; the average CIA value of Chouniugou section and Hongshuipu section is 84.1 and 83.51 in order which shows that the weathering degree in the western study area is relatively stronger than that in the eastern. The index of weathering(CIA) is relatively high, which indicates the study area is suffered from medium weathering. Analysis of the diagram of major element ratio, microelement and rare earth element indicates the source rock of the study area is feldspathic-quartz, mainly intermediate to acidic granite and alkali basalt. On the basis of discrimination diagrams of SiO₂-K₂O/Na₂O, La-Th-Sc, Th-Co-Zr/10 and abnormal value of Ce, the tectonic setting is considered to be a passive continental margin. By contrastive analysis of the east and the west of the study area, we found that Chouniugou section in the west of the Basin has a mixed source from Longxi ancient land and Alashan ancient land, whereas Hongshuipu section in the east of the Basin has a single source from Longxi ancient land.

Key words: Wuwei Basin, Carboniferous period, geochemistry of element, tectonic setting, provenance, weathering

CLC Number:

TE132.2

PENG Yuanyuan, KANG Zhihong, LI Weiqi, HAN Huiyu, TAN Long. Element Geochemical Characteristics of Carboniferous Shale in Wuwei Basin and Its Significance[J]. Geoscience, 2017, 31(03): 574-586.

Figures/Tables 12

References 41

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剖面	样品号	岩性	SiO₂	Al₂O₃	Fe₂O₃	MgO	CaO	Na₂O	K₂O	MnO	TiO₂	P₂O₅	K₂O/ Na₂O	Fe₂O₃+ MgO	Al₂O₃/ SiO₂	K₂O/(Na₂O +CaO)	Al₂O₃/(CaO+ Na₂O)	ICV	CIA
臭牛沟	C1c-03	泥岩	59.38	24.67	1.43	0.732	0.182	0.212	4.14	0.005	1.14	0.049	19.53	2.16	0.42	10.51	62.61	0.32	82.70
	C2y-05	页岩	37.40	14.56	2.42	1.02	20.33	0.227	2.1	0.074	0.594	0.033	9.25	3.44	0.39	0.1	0.71	1.84	82.82
	C2y-09	页岩	53.78	24.53	5.68	1.26	0.501	0.237	3.39	0.01	0.883	0.268	14.3	6.94	0.46	4.59	33.24	0.49	84.65
	C2y-10	页岩	71.05	14.45	2.95	0.536	0.42	0.149	2.56	0.006	0.949	0.128	17.18	3.49	0.2	4.5	25.4	0.52	81.59
	C2y-11	页岩	55.40	25.65	3.08	0.89	0.401	0.148	3.21	0.005	1	0.158	21.69	3.97	0.46	5.85	46.72	0.34	86.62
	C2y-13	页岩	58.44	21.68	1.82	0.588	0.392	0.154	3.07	0.004	1.09	0.285	19.94	2.41	0.37	5.62	39.71	0.33	84.99
	C2y-14	页岩	78.67	10.23	1.05	0.227	0.103	0.082	0.843	0.006	0.675	0.025	10.28	1.28	0.13	4.56	55.3	0.29	89.64
	C2y-15	页岩	51.49	18.73	2.57	0.434	0.154	0.342	2.17	0.009	0.806	0.067	6.35	3	0.36	4.38	37.76	0.35	85.44
红水堡	C1c-08	页岩	71.1	13.81	1.13	0.545	0.268	0.353	1.64	0.006	0.905	0.068	4.65	1.68	0.19	2.64	22.24	0.35	82.93
	C1c-09	页岩	54.37	25.89	3.44	1.1	0.269	0.54	3.11	0.023	0.895	0.153	5.76	4.54	0.48	3.84	32	0.36	84.51
	C1c-12	页岩	53.22	26.56	3.31	1.2	0.34	0.269	3.4	0.032	0.996	0.172	12.64	4.51	0.5	5.58	43.61	0.36	85.33
	C1c-15	页岩	58.09	23.12	1.46	0.679	0.229	0.613	2.3	0.005	1.14	0.119	3.75	2.14	0.4	2.73	27.46	0.28	85.52
	C2y-17	页岩	43	11.61	15.7	0.424	0.274	2.1	1.21	0.006	0.661	0.232	0.58	16.12	0.27	0.51	4.89	1.75	68.81
	C2y-18	页岩	39.52	14.88	16.03	0.49	0.143	2.02	1.58	0.005	0.86	0.24	0.78	16.52	0.38	0.73	6.88	1.42	73.76
	C2y-19	页岩	52.03	21.44	5.64	0.768	0.167	0.575	2.81	0.006	0.943	0.092	4.89	6.41	0.41	3.79	28.89	0.51	83.32
	C2y-20	页岩	54.69	21.18	1.44	0.695	0.213	0.217	1.94	0.005	1.22	0.071	8.94	2.14	0.39	4.51	49.26	0.27	88.27
	C2y-21	页岩	80.73	8.79	0.758	0.25	0.261	0.105	0.675	0.004	0.617	0.025	6.43	1.01	0.11	1.84	24.02	0.3	89.09
	C2y-22	页岩	59.42	21.08	2.27	0.785	0.228	0.186	2.92	0.006	1.01	0.113	15.7	3.06	0.35	7.05	50.92	0.35	84.82
	C2y-23	页岩	52.61	18.29	4.07	0.838	0.241	0.195	3.07	0.006	1.05	0.091	15.74	4.91	0.35	7.04	41.95	0.52	82.19
	C2y-24	页岩	70.04	17.66	1.14	0.358	0.211	0.098	1.48	0.006	0.907	0.056	15.1	1.5	0.25	4.79	57.15	0.24	90.17
	C2y-26	页岩	56.45	25.39	1.39	0.743	0.291	0.196	3.13	0.006	0.999	0.083	15.97	2.13	0.45	6.43	52.14	0.27	86.29
	C2y-27	页岩	52.17	21.25	3.78	0.644	0.361	0.273	2.6	0.006	0.956	0.12	9.52	4.42	0.41	4.1	33.52	0.41	85.13
	C2y-28	页岩	53.9	28.04	1.49	0.698	0.163	0.239	3.46	0.006	0.98	0.14	14.48	2.19	0.52	8.61	69.75	0.25	86.34
	C2y-29	页岩	51.59	26.44	1.99	0.774	0.522	0.212	2.99	0.005	1.01	0.097	14.1	2.76	0.51	4.07	36.02	0.28	87.05
平均值			57.02	20	3.585	0.695	1.111	0.406	2.492	0.011	0.929	0.12	11.15	4.28	0.36	4.52	36.76	0.52	84.25

剖面	样品号	岩性	SiO₂	Al₂O₃	Fe₂O₃	MgO	CaO	Na₂O	K₂O	MnO	TiO₂	P₂O₅	K₂O/ Na₂O	Fe₂O₃+ MgO	Al₂O₃/ SiO₂	K₂O/(Na₂O +CaO)	Al₂O₃/(CaO+ Na₂O)	ICV	CIA
臭牛沟	C1c-03	泥岩	59.38	24.67	1.43	0.732	0.182	0.212	4.14	0.005	1.14	0.049	19.53	2.16	0.42	10.51	62.61	0.32	82.70
	C2y-05	页岩	37.40	14.56	2.42	1.02	20.33	0.227	2.1	0.074	0.594	0.033	9.25	3.44	0.39	0.1	0.71	1.84	82.82
	C2y-09	页岩	53.78	24.53	5.68	1.26	0.501	0.237	3.39	0.01	0.883	0.268	14.3	6.94	0.46	4.59	33.24	0.49	84.65
	C2y-10	页岩	71.05	14.45	2.95	0.536	0.42	0.149	2.56	0.006	0.949	0.128	17.18	3.49	0.2	4.5	25.4	0.52	81.59
	C2y-11	页岩	55.40	25.65	3.08	0.89	0.401	0.148	3.21	0.005	1	0.158	21.69	3.97	0.46	5.85	46.72	0.34	86.62
	C2y-13	页岩	58.44	21.68	1.82	0.588	0.392	0.154	3.07	0.004	1.09	0.285	19.94	2.41	0.37	5.62	39.71	0.33	84.99
	C2y-14	页岩	78.67	10.23	1.05	0.227	0.103	0.082	0.843	0.006	0.675	0.025	10.28	1.28	0.13	4.56	55.3	0.29	89.64
	C2y-15	页岩	51.49	18.73	2.57	0.434	0.154	0.342	2.17	0.009	0.806	0.067	6.35	3	0.36	4.38	37.76	0.35	85.44
红水堡	C1c-08	页岩	71.1	13.81	1.13	0.545	0.268	0.353	1.64	0.006	0.905	0.068	4.65	1.68	0.19	2.64	22.24	0.35	82.93
	C1c-09	页岩	54.37	25.89	3.44	1.1	0.269	0.54	3.11	0.023	0.895	0.153	5.76	4.54	0.48	3.84	32	0.36	84.51
	C1c-12	页岩	53.22	26.56	3.31	1.2	0.34	0.269	3.4	0.032	0.996	0.172	12.64	4.51	0.5	5.58	43.61	0.36	85.33
	C1c-15	页岩	58.09	23.12	1.46	0.679	0.229	0.613	2.3	0.005	1.14	0.119	3.75	2.14	0.4	2.73	27.46	0.28	85.52
	C2y-17	页岩	43	11.61	15.7	0.424	0.274	2.1	1.21	0.006	0.661	0.232	0.58	16.12	0.27	0.51	4.89	1.75	68.81
	C2y-18	页岩	39.52	14.88	16.03	0.49	0.143	2.02	1.58	0.005	0.86	0.24	0.78	16.52	0.38	0.73	6.88	1.42	73.76
	C2y-19	页岩	52.03	21.44	5.64	0.768	0.167	0.575	2.81	0.006	0.943	0.092	4.89	6.41	0.41	3.79	28.89	0.51	83.32
	C2y-20	页岩	54.69	21.18	1.44	0.695	0.213	0.217	1.94	0.005	1.22	0.071	8.94	2.14	0.39	4.51	49.26	0.27	88.27
	C2y-21	页岩	80.73	8.79	0.758	0.25	0.261	0.105	0.675	0.004	0.617	0.025	6.43	1.01	0.11	1.84	24.02	0.3	89.09
	C2y-22	页岩	59.42	21.08	2.27	0.785	0.228	0.186	2.92	0.006	1.01	0.113	15.7	3.06	0.35	7.05	50.92	0.35	84.82
	C2y-23	页岩	52.61	18.29	4.07	0.838	0.241	0.195	3.07	0.006	1.05	0.091	15.74	4.91	0.35	7.04	41.95	0.52	82.19
	C2y-24	页岩	70.04	17.66	1.14	0.358	0.211	0.098	1.48	0.006	0.907	0.056	15.1	1.5	0.25	4.79	57.15	0.24	90.17
	C2y-26	页岩	56.45	25.39	1.39	0.743	0.291	0.196	3.13	0.006	0.999	0.083	15.97	2.13	0.45	6.43	52.14	0.27	86.29
	C2y-27	页岩	52.17	21.25	3.78	0.644	0.361	0.273	2.6	0.006	0.956	0.12	9.52	4.42	0.41	4.1	33.52	0.41	85.13
	C2y-28	页岩	53.9	28.04	1.49	0.698	0.163	0.239	3.46	0.006	0.98	0.14	14.48	2.19	0.52	8.61	69.75	0.25	86.34
	C2y-29	页岩	51.59	26.44	1.99	0.774	0.522	0.212	2.99	0.005	1.01	0.097	14.1	2.76	0.51	4.07	36.02	0.28	87.05
平均值			57.02	20	3.585	0.695	1.111	0.406	2.492	0.011	0.929	0.12	11.15	4.28	0.36	4.52	36.76	0.52	84.25

剖面	样品号	岩性	Li	Be	Sc	V	Cr	Co	Ni	Cu	Zn	Ga	Rb	Sr	Cs	Ba	Th	U	Zr	Nb	Ta
臭牛沟	C1c-03	泥岩	305.00	2.36	24.90	189.00	161.00	1.93	21.50	13.20	25.80	30.80	258.00	66.50	53.50	455.00	24.10	6.32	184.00	23.60	1.99
	C2y-05	页岩	238.00	2.02	15.80	129.00	91.80	8.35	47.90	17.00	58.20	17.00	130.00	431.00	33.70	267.00	13.10	4.39	95.50	13.40	1.04
	C2y-09	页岩	391.00	4.98	25.70	136.00	116.00	12.20	61.60	109.00	106.00	32.50	189.00	419.00	43.90	467.00	27.10	10.40	132.00	19.90	1.72
	C2y-10	页岩	51.30	1.81	15.80	97.10	101.00	1.13	5.28	16.30	24.30	23.40	138.00	603.00	23.40	361.00	24.30	7.04	206.00	21.60	1.84
	C2y-11	页岩	257.00	4.19	20.40	153.00	119.00	3.29	42.20	18.10	75.30	32.50	166.00	299.00	26.80	557.00	36.00	5.82	133.00	25.70	2.26
	C2y-13	页岩	115.00	3.34	18.00	137.00	105.00	1.09	8.28	15.70	24.90	31.00	145.00	1 428.00	19.80	478.00	28.90	8.28	136.00	26.40	2.32
	C2y-14	页岩	42.80	1.05	8.11	81.30	75.10	1.19	12.30	6.94	15.10	11.10	41.80	27.30	4.09	162.00	6.84	9.44	151.00	14.70	1.30
	C2y-15	页岩	90.70	2.28	15.90	267.00	287.00	1.51	48.10	15.40	24.50	23.80	104.00	101.00	9.29	423.00	15.40	10.20	130.00	17.10	1.38
红水堡	C1c-08	页岩	39.80	1.83	16.40	112.00	117.00	1.35	8.06	30.10	20.70	18.50	92.00	208.00	14.50	196.00	16.50	8.21	238.00	20.20	1.57
	C1c-09	页岩	223.00	3.72	21.90	169.00	147.00	13.30	55.70	28.50	99.20	29.40	179.00	173.00	26.60	283.00	21.90	8.42	143.00	20.80	1.81
	C1c-12	页岩	341.00	5.13	24.30	191.00	145.00	13.50	47.30	30.30	96.60	32.10	217.00	196.00	32.10	322.00	25.80	8.15	156.00	25.90	2.06
	C1c-15	页岩	151.00	2.99	19.40	135.00	121.00	1.60	13.10	18.40	19.60	27.70	116.00	456.00	17.60	240.00	24.20	11.90	186.00	27.30	2.33
	C2y-17	页岩	104.00	1.09	10.60	123.00	105.00	0.96	8.25	13.90	16.60	18.60	55.00	929.00	5.97	162.00	17.90	8.82	118.00	20.70	2.13
	C2y-18	页岩	122.00	1.64	17.30	102.00	146.00	1.47	13.80	24.50	23.50	21.00	77.40	210.00	8.58	199.00	14.00	7.52	123.00	18.50	1.53
	C2y-19	页岩	139.00	2.54	25.60	175.00	154.00	2.07	16.00	29.30	25.00	27.90	141.00	217.00	15.10	357.00	24.70	8.22	133.00	19.50	1.58
	C2y-20	页岩	225.00	2.22	20.00	133.00	168.00	1.79	17.00	33.00	24.20	28.50	92.20	192.00	14.70	260.00	18.80	9.86	201.00	25.40	2.14
	C2y-21	页岩	34.30	0.97	8.63	44.00	95.50	0.70	5.00	14.90	14.80	9.60	32.70	46.30	4.72	98.50	9.41	6.03	233.00	15.10	1.20
	C2y-22	页岩	104.00	2.52	23.20	152.00	155.00	1.54	12.80	14.70	22.90	26.20	148.00	394.00	14.30	396.00	24.50	8.95	154.00	20.30	1.66
	C2y-23	页岩	141.00	3.29	21.70	192.00	245.00	1.37	13.70	24.10	25.70	32.90	158.00	355.00	17.60	435.00	24.50	13.10	164.00	26.10	2.26
	C2y-24	页岩	157.00	2.86	13.30	93.30	80.10	1.80	16.50	13.10	22.10	21.30	71.20	102.00	7.00	237.00	21.10	11.50	292.00	23.30	2.02
	C2y-26	页岩	202.00	3.13	22.00	143.00	132.00	1.97	13.50	17.40	28.80	33.20	157.00	187.00	14.70	429.00	25.50	7.51	136.00	25.00	2.04
	C2y-27	页岩	180.00	3.26	20.80	213.00	166.00	1.68	12.40	43.70	39.90	31.00	124.00	308.00	12.10	352.00	25.20	12.60	143.00	21.60	1.81
	C2y-28	页岩	206.00	4.15	20.70	126.00	122.00	2.55	21.20	13.10	34.60	35.40	171.00	456.00	14.00	457.00	22.80	7.07	137.00	22.80	1.88
	C2y-29	页岩	271.00	3.77	23.40	150.00	188.00	2.24	18.10	10.00	28.70	36.30	147.00	216.00	15.60	415.00	30.60	9.02	137.00	24.40	2.07
平均值			172.12	2.80	18.91	143.45	139.27	3.36	22.48	23.78	37.38	26.32	131.26	334.17	18.74	333.69	21.80	8.70	160.90	21.64	1.83

剖面	样品号	岩性	Li	Be	Sc	V	Cr	Co	Ni	Cu	Zn	Ga	Rb	Sr	Cs	Ba	Th	U	Zr	Nb	Ta
臭牛沟	C1c-03	泥岩	305.00	2.36	24.90	189.00	161.00	1.93	21.50	13.20	25.80	30.80	258.00	66.50	53.50	455.00	24.10	6.32	184.00	23.60	1.99
	C2y-05	页岩	238.00	2.02	15.80	129.00	91.80	8.35	47.90	17.00	58.20	17.00	130.00	431.00	33.70	267.00	13.10	4.39	95.50	13.40	1.04
	C2y-09	页岩	391.00	4.98	25.70	136.00	116.00	12.20	61.60	109.00	106.00	32.50	189.00	419.00	43.90	467.00	27.10	10.40	132.00	19.90	1.72
	C2y-10	页岩	51.30	1.81	15.80	97.10	101.00	1.13	5.28	16.30	24.30	23.40	138.00	603.00	23.40	361.00	24.30	7.04	206.00	21.60	1.84
	C2y-11	页岩	257.00	4.19	20.40	153.00	119.00	3.29	42.20	18.10	75.30	32.50	166.00	299.00	26.80	557.00	36.00	5.82	133.00	25.70	2.26
	C2y-13	页岩	115.00	3.34	18.00	137.00	105.00	1.09	8.28	15.70	24.90	31.00	145.00	1 428.00	19.80	478.00	28.90	8.28	136.00	26.40	2.32
	C2y-14	页岩	42.80	1.05	8.11	81.30	75.10	1.19	12.30	6.94	15.10	11.10	41.80	27.30	4.09	162.00	6.84	9.44	151.00	14.70	1.30
	C2y-15	页岩	90.70	2.28	15.90	267.00	287.00	1.51	48.10	15.40	24.50	23.80	104.00	101.00	9.29	423.00	15.40	10.20	130.00	17.10	1.38
红水堡	C1c-08	页岩	39.80	1.83	16.40	112.00	117.00	1.35	8.06	30.10	20.70	18.50	92.00	208.00	14.50	196.00	16.50	8.21	238.00	20.20	1.57
	C1c-09	页岩	223.00	3.72	21.90	169.00	147.00	13.30	55.70	28.50	99.20	29.40	179.00	173.00	26.60	283.00	21.90	8.42	143.00	20.80	1.81
	C1c-12	页岩	341.00	5.13	24.30	191.00	145.00	13.50	47.30	30.30	96.60	32.10	217.00	196.00	32.10	322.00	25.80	8.15	156.00	25.90	2.06
	C1c-15	页岩	151.00	2.99	19.40	135.00	121.00	1.60	13.10	18.40	19.60	27.70	116.00	456.00	17.60	240.00	24.20	11.90	186.00	27.30	2.33
	C2y-17	页岩	104.00	1.09	10.60	123.00	105.00	0.96	8.25	13.90	16.60	18.60	55.00	929.00	5.97	162.00	17.90	8.82	118.00	20.70	2.13
	C2y-18	页岩	122.00	1.64	17.30	102.00	146.00	1.47	13.80	24.50	23.50	21.00	77.40	210.00	8.58	199.00	14.00	7.52	123.00	18.50	1.53
	C2y-19	页岩	139.00	2.54	25.60	175.00	154.00	2.07	16.00	29.30	25.00	27.90	141.00	217.00	15.10	357.00	24.70	8.22	133.00	19.50	1.58
	C2y-20	页岩	225.00	2.22	20.00	133.00	168.00	1.79	17.00	33.00	24.20	28.50	92.20	192.00	14.70	260.00	18.80	9.86	201.00	25.40	2.14
	C2y-21	页岩	34.30	0.97	8.63	44.00	95.50	0.70	5.00	14.90	14.80	9.60	32.70	46.30	4.72	98.50	9.41	6.03	233.00	15.10	1.20
	C2y-22	页岩	104.00	2.52	23.20	152.00	155.00	1.54	12.80	14.70	22.90	26.20	148.00	394.00	14.30	396.00	24.50	8.95	154.00	20.30	1.66
	C2y-23	页岩	141.00	3.29	21.70	192.00	245.00	1.37	13.70	24.10	25.70	32.90	158.00	355.00	17.60	435.00	24.50	13.10	164.00	26.10	2.26
	C2y-24	页岩	157.00	2.86	13.30	93.30	80.10	1.80	16.50	13.10	22.10	21.30	71.20	102.00	7.00	237.00	21.10	11.50	292.00	23.30	2.02
	C2y-26	页岩	202.00	3.13	22.00	143.00	132.00	1.97	13.50	17.40	28.80	33.20	157.00	187.00	14.70	429.00	25.50	7.51	136.00	25.00	2.04
	C2y-27	页岩	180.00	3.26	20.80	213.00	166.00	1.68	12.40	43.70	39.90	31.00	124.00	308.00	12.10	352.00	25.20	12.60	143.00	21.60	1.81
	C2y-28	页岩	206.00	4.15	20.70	126.00	122.00	2.55	21.20	13.10	34.60	35.40	171.00	456.00	14.00	457.00	22.80	7.07	137.00	22.80	1.88
	C2y-29	页岩	271.00	3.77	23.40	150.00	188.00	2.24	18.10	10.00	28.70	36.30	147.00	216.00	15.60	415.00	30.60	9.02	137.00	24.40	2.07
平均值			172.12	2.80	18.91	143.45	139.27	3.36	22.48	23.78	37.38	26.32	131.26	334.17	18.74	333.69	21.80	8.70	160.90	21.64	1.83

剖面	样品号	岩性	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Y	L/H	La/Yb	Eu/Eu^*	δCe	∑REE	(La/Yb)_N
臭牛沟	C1c-03	泥岩	85.50	163.00	16.30	54.80	6.73	0.73	5.78	1.18	7.70	1.47	4.68	0.85	5.85	0.82	41.70	11.54	14.62	0.69	1.03	355.39	9.85
	C2y-05	页岩	33.20	59.90	6.98	25.70	4.14	0.79	3.66	0.70	3.95	0.71	2.18	0.39	2.61	0.39	21.30	8.96	12.72	0.83	0.90	145.29	8.58
	C2y-09	页岩	139.00	227.00	25.40	95.60	17.50	5.68	16.50	2.51	11.60	1.94	5.38	0.84	5.33	0.78	50.60	11.37	26.08	1.01	0.86	555.05	17.58
	C2y-10	页岩	51.00	97.90	10.50	40.40	7.22	0.98	4.96	0.96	5.46	1.00	3.20	0.59	4.04	0.60	27.90	10.00	12.62	0.79	0.94	228.81	8.51
	C2y-11	页岩	75.40	146.00	15.10	56.90	10.10	2.36	8.68	1.50	8.37	1.50	4.51	0.75	4.87	0.72	42.30	9.90	15.48	0.93	0.97	336.76	10.44
	C2y-13	页岩	70.40	146.00	15.70	61.40	10.30	1.77	7.19	1.16	6.12	1.01	3.22	0.57	3.74	0.55	29.40	12.97	18.82	0.87	0.97	329.13	12.69
	C2y-14	页岩	32.00	57.10	6.00	20.90	3.17	0.60	3.13	0.60	3.49	0.68	2.00	0.35	2.30	0.36	18.80	9.27	13.91	0.79	0.96	132.69	9.38
	C2y-15	页岩	55.30	104.00	11.20	42.30	6.63	1.14	4.44	0.68	4.04	0.74	2.33	0.44	2.83	0.43	21.70	13.85	19.54	0.86	0.94	236.50	13.17
红水堡	C1c-08	页岩	48.30	84.60	10.20	42.20	8.60	1.53	6.46	1.14	6.39	1.12	3.48	0.59	4.24	0.65	31.50	8.12	11.39	0.87	0.82	219.50	7.68
	C1c-09	页岩	48.40	94.60	10.50	39.80	7.00	1.24	5.49	1.02	5.56	1.07	3.33	0.59	3.78	0.57	28.60	9.42	12.80	0.85	0.94	222.95	8.63
	C1c-12	页岩	60.00	115.00	12.30	46.50	7.99	1.39	5.93	1.13	6.35	1.22	3.87	0.70	4.74	0.68	34.40	9.88	12.66	0.86	0.95	267.80	8.53
	C1c-15	页岩	70.30	143.00	15.30	58.30	10.40	1.93	8.32	1.35	7.19	1.31	3.83	0.70	4.85	0.71	35.20	10.59	14.49	0.88	0.98	327.48	9.77
	C2y-17	页岩	55.80	96.30	10.50	41.10	7.35	1.23	5.27	0.73	3.52	0.59	1.88	0.33	2.12	0.34	16.10	14.36	26.32	0.85	0.88	227.06	17.75
	C2y-18	页岩	41.80	82.60	8.93	33.30	5.68	1.16	5.23	0.87	5.06	0.93	2.98	0.49	3.29	0.48	24.90	8.97	12.71	0.87	0.97	192.80	8.57
	C2y-19	页岩	63.20	125.00	14.60	58.30	9.86	1.43	7.65	1.30	6.61	1.19	3.69	0.63	4.46	0.67	30.30	10.39	14.17	0.81	0.90	298.60	9.55
	C2y-20	页岩	50.20	91.30	10.20	38.30	6.37	1.09	4.79	0.82	4.78	1.02	3.28	0.61	3.84	0.56	28.70	10.02	13.07	0.84	0.91	217.16	8.81
	C2y-21	页岩	19.60	32.60	3.73	14.20	2.44	0.41	2.17	0.47	3.03	0.61	1.86	0.40	2.70	0.39	18.40	6.28	7.26	0.74	0.85	84.60	4.89
	C2y-22	页岩	79.60	162.00	16.20	58.40	9.23	1.82	6.36	1.06	6.14	1.17	3.77	0.66	4.82	0.69	33.80	13.26	16.51	0.91	1.04	351.92	11.13
	C2y-23	页岩	75.40	143.00	14.60	56.40	9.64	2.56	7.92	1.27	6.68	1.27	3.78	0.62	4.42	0.64	36.10	11.34	17.06	0.97	0.96	328.20	11.50
	C2y-24	页岩	43.60	76.70	8.35	31.50	5.52	0.95	4.37	0.85	4.60	0.90	2.64	0.45	3.37	0.47	24.20	9.44	12.94	0.83	0.90	184.27	8.72
	C2y-26	页岩	79.40	142.00	15.80	56.60	9.40	1.61	6.37	1.04	6.26	1.22	3.95	0.67	4.42	0.67	35.60	12.39	17.96	0.87	0.92	329.41	12.11
	C2y-27	页岩	88.10	175.00	17.70	69.30	11.80	1.99	8.11	1.22	6.58	1.20	3.70	0.68	4.72	0.68	33.30	13.53	18.67	0.87	0.98	390.78	12.58
	C2y-28	页岩	76.10	145.00	15.40	61.30	10.30	2.02	7.59	1.27	6.56	1.25	3.77	0.60	4.00	0.58	34.40	12.11	19.03	0.90	0.93	335.74	12.83
	C2y-29	页岩	89.60	168.00	17.90	65.40	11.50	1.89	7.57	1.29	7.42	1.39	4.32	0.73	5.36	0.71	37.90	12.31	16.72	0.87	0.96	383.08	11.27
平均值			63.80	119.90	12.89	48.70	8.29	1.60	6.41	1.09	5.98	1.10	3.40	0.59	4.03	0.59	30.71	10.84	15.73	0.86	0.93	278.37	10.61