鄂西黄陵背斜周缘震旦系灯影组白云岩成因分析

李浩涵, 张聪, 李文正, 张春贺, 张远, 王梓, 陈维堃, 方镕慧

Genetic analysis of dolomites in the Sinian Dengying Formation on the periphery of the Huangling anticline, western Hubei Province

LI Hao-Han, ZHANG Cong, LI Wen-Zheng, ZHANG Chun-He, ZHANG Yuan, WANG Zi, CHEN Wei-Kun, FANG Rong-Hui

表1 鄂西地区佑溪、青林口剖面主量元素、微量元素和碳氧同位素数据

Table 1 Data of major elements, trace elements and carbon and oxygen isotopes of Youxi and Qinglinkou profiles in the western Hubei region

序号	样品编号	岩性	微量元素含量/10^-6						主量元素含量/%				碳氧同位素
序号	样品编号	岩性	Sr 光谱	Sr 质谱	Mn	Fe	w(Fe)/ w(Mn)	w(Mn)/ w(Sr)	SiO₂	Al₂O₃	CaO	MgO	δC¹³/ PDB,‰	δO¹⁸/ PDB,‰	古盐度指标(Z)	古海水温度T/℃	成岩温度T/℃
1	QLK-01	粉—泥晶白云岩	61.94	86.6	97.70	357.78	3.66	1.13	0.50	0.18	32.37	23.08	-2.29	-6.55	119.35	17.96	45.57
2	QLK-02	纹层状泥质泥晶白云岩	149.91	99.5	94.20	5374.44	57.05	0.95	6.82	1.81	27.51	20.80	1.89	-7.45	127.46	21.9	50.19
3	QLK-03	粉—泥晶硅质灰岩	479.53	43	190.10	62.22	0.33	4.42	13.29	0.06	26.33	20.03	3.54	-5.45	131.84	13.42	40
4	QLK-04	粒屑粉—泥晶灰岩	2683.77	1361	34.20	/	0.00	0.03	1.52	0.05	53.66	1.48	2.65	-6.3	129.59	16.9	44.29
5	QLK-05	泥—粉晶白云岩	2462.38	77.1	169.90	147.78	0.87	2.20	0.68	0.10	32.57	23.07	3.83	-6.65	131.83	18.39	46.08
6	QLK-06	细晶含灰白云岩	1994.75	67.1	216.80	132.22	0.61	3.23	0.72	0.09	32.64	22.74	5.03	-5.39	134.92	13.19	39.7
7	QLK-07	泥—粉晶白云岩	1090.57	90.5	166.90	482.22	2.89	1.84	0.30	0.11	32.68	20.55	3.89	-6.56	132	18	45.62
8	QLK-08	粉—细晶白云岩	2573.67	63.2	144.10	4106.67	28.50	2.28	5.58	1.58	27.91	18.56	3.81	-5.99	132.12	15.61	42.72
9	QLK-09	粉—细晶白云岩	1620.55	1528.4	/	38.89	/	/	0.45	0.08	54.03	1.38	3.77	-5.27	132.4	12.71	39.1
10	QLK-10	泥—粉晶云质灰岩	984.39	397.6	2.50	15.56	6.22	0.01	3.77	0.15	50.88	1.63	1.61	-8.22	126.5	25.44	54.2
11	QLK-11	粉—细晶灰质白云岩	1463.82	1149.4	19.40	/	0.00	0.02	2.23	0.08	54.13	0.63	3.68	-6.07	131.81	15.94	43.12
12	QLK-12	粉—细晶灰质白云岩	664.52	73.9	139.80	70.00	0.50	1.89	4.43	0.16	30.83	22.19	2.82	-7.95	129.12	24.18	52.79
13	QLK-13	粉—细晶白云质灰岩	1192.04	117.3	116.80	2107.78	18.05	1.00	1.28	0.34	32.33	19.40	3.07	-7.08	130.06	20.26	48.28
14	QLK-14	泥—粉晶白云岩	1308.22	684.5	337.10	124.44	0.37	0.49	2.51	0.21	39.91	14.44	1.03	-9.78	124.54	33.09	62.47
15	QLK-15	粉—细晶云质灰岩	861.54	2027.9	10.70	7.78	0.73	0.01	17.43	0.16	40.02	1.73	1.31	-9.7	125.15	32.68	62.04
16	QLK-16	粉晶含灰白云岩	1702.04	36.6	68.40	31.11	0.45	1.87	0.16	0.05	32.54	23.31	2.93	-6.95	129.84	19.68	47.61
17	QLK-17	粉—细晶白云岩	2327.16	2073.7	12.70	140.00	11.02	0.01	1.79	0.14	51.02	3.33	3.53	-6.08	131.5	15.98	43.18
18	QLK-18	粉晶白云岩	1841.99	64.3	87.50	248.89	2.84	1.36	0.13	0.06	32.92	22.77	2.95	-6.81	129.95	19.08	46.89
19	QLK-19	粉—泥晶白云岩	62.49	1687.1	19.50	7.78	0.40	0.01	14.35	0.11	41.48	2.47	2.48	-7.81	128.49	23.54	52.06
20	QLK-20	粉—泥晶白云岩	57.44	95.8	99.90	132.22	1.32	1.04	0.31	0.16	33.45	22.37	1.23	-8.04	125.82	24.6	53.26
21	QLK-21	泥—粉晶白云岩	63.87	857.5	204.50	4876.67	23.85	0.24	16.56	2.99	32.59	4.55	2.16	-7.86	127.81	23.77	52.32
22	QLK-22	泥—粉晶白云岩	81.86	1029.4	106.40	1796.67	16.89	0.10	6.73	1.03	45.38	2.38	2.35	-7.8	128.23	23.49	52.01
23	QLK-23	泥—粉晶白云岩	60.23	173.1	154.50	248.89	1.61	0.89	1.23	0.21	32.77	22.10	0.87	-7.57	125.31	22.44	50.81
24	QLK-24	泥—粉晶白云岩	102.88	73.9	101.40	256.67	2.53	1.37	0.27	0.12	32.74	23.12	1.18	-7.04	126.21	20.08	48.08
25	YX-01	泥—粉晶白云岩	54.88	100.1	207.80	7.78	0.04	2.08	0.75	0.06	32.89	22.87	3.35	-6.25	131.05	16.69	44.04
26	YX-02	泥—粉晶白云岩	42.51	936.3	24.50	116.67	4.76	0.03	2.41	0.14	52.39	1.25	1.97	-6.85	127.92	19.25	47.1
27	YX-03	泥—粉晶白云岩	87.58	283.7	7.10	/	0.00	0.03	1.24	0.05	54.06	1.28	1.55	-4.17	128.4	8.54	33.64
28	YX-04	粉—泥晶白云岩	82.75	92.1	76.70	132.22	1.72	0.83	0.67	0.10	32.61	23.06	1.95	-8.34	127.14	26.01	54.83
29	YX-05	粉—泥晶白云岩	64.72	46.4	178.70	85.56	0.48	3.85	25.64	0.06	20.82	17.36	-1.28	-8.6	120.4	27.25	56.2
30	YX-06	粉—泥晶白云岩	57.01	39.1	140.90	225.56	1.60	3.60	0.29	0.06	32.36	23.23	1.96	-8.06	127.3	24.69	53.36
31	YX-07	粉—泥晶含硅白云岩	37.75	49.2	256.60	70.00	0.27	5.22	0.63	0.05	32.56	22.62	/	/	/	/	/
32	YX-08	粉—泥晶白云岩	36.41	82.8	73.10	342.22	4.68	0.88	29.55	0.12	19.56	16.47	3	-8.83	129.05	28.36	57.41
33	YX-09	粉—泥晶白云岩	43.43	79.2	154.20	85.56	0.55	1.95	1.09	0.05	32.08	22.28	2.65	-8.41	128.54	26.34	55.2
34	YX-10	泥—粉晶白云岩	61.82	1128.6	12.20	303.33	24.86	0.01	24.17	0.24	31.96	4.81	3.38	-7.98	130.25	24.32	52.95
35	YX-11	粉—泥晶白云岩	67.23	76.2	201.30	70.00	0.35	2.64	8.10	0.08	28.51	21.23	1.74	-8.1	126.83	24.88	53.57
36	YX-12	粒屑粉—泥晶白云岩	71.48	1354.8	0.80	85.56	106.94	0.00	6.29	0.12	46.72	3.24	2.29	-7.72	128.15	23.13	51.59
37	YX-13	含粒屑粉—泥晶白云岩	32.58	787.3	55.90	93.33	1.67	0.07	0.95	0.11	54.04	1.37	0.73	-7.31	125.15	21.27	49.47
38	YX-14	粉—细晶白云岩	79.11	9.5	9.50	202.22	21.29	1.00	3.76	0.21	50.34	1.78	2.91	-8.27	129.14	25.68	54.46