Analysis on Black Shale Sedimentary Paleoenvironment and Tectonic Setting of the First Member of Luzhai Formation of Lower Carboniferous, Rongshui Area of Guangxi, China

Table 2

REE characteristic parameters of Lower Carboniferous black rock shale in Rongshui, Guangxi.

Sample number	Depth (m)	Content of REE (10^-6)															ΣREE	ΣLREE	ΣHREE	ΣLREE/ΣHREE	LaN/YbN	Eu	Ce
		La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Y
GX-01	1535.00	31.05	58.64	6.52	25.06	4.87	0.99	4.68	0.74	3.97	0.73	2.28	0.33	2.25	0.35	19.40	142.46	127.13	15.33	8.29	9.33	0.63	0.93
GX-02	1547.50	39.52	67.98	7.62	27.11	4.75	0.91	3.69	0.54	2.80	0.57	1.95	0.30	2.29	0.37	14.14	160.40	147.89	12.51	11.82	11.66	0.64	0.87
GX-03	1566.00	28.47	51.82	5.67	21.04	3.73	0.74	3.18	0.50	2.76	0.57	1.78	0.27	1.98	0.29	14.00	122.80	111.47	11.33	9.84	9.72	0.64	0.91
GX-04	1603.10	29.94	46.15	5.59	21.28	3.92	0.81	3.47	0.56	3.08	0.66	2.09	0.32	2.35	0.38	17.37	120.60	107.69	12.91	8.34	8.61	0.66	0.79
GX-05	1608.10	36.44	64.79	7.11	25.81	4.35	0.79	3.16	0.45	2.84	0.64	2.29	0.38	3.00	0.48	15.35	152.53	139.29	13.24	10.52	8.21	0.62	0.90
GX-06	1615.60	32.26	60.39	6.85	26.21	4.72	0.96	3.96	0.60	3.72	0.76	2.55	0.40	2.96	0.46	18.32	146.80	131.39	15.41	8.53	7.36	0.66	0.92
GX-07	1617.98	24.59	46.99	6.35	23.06	4.49	1.08	3.63	0.65	3.64	0.76	2.16	0.34	2.17	0.30	18.76	120.20	106.54	13.66	7.80	7.64	0.79	0.87
GX-08	1624.06	20.15	36.19	5.06	18.73	3.87	1.07	4.03	0.73	4.12	0.82	2.23	0.34	2.31	0.30	23.26	99.93	85.07	14.87	5.72	5.89	0.82	0.82
GX-09	1625.80	26.34	42.30	5.25	19.65	3.70	0.86	3.52	0.58	3.44	0.71	2.30	0.34	2.35	0.37	19.37	111.71	98.10	13.61	7.21	7.57	0.72	0.80
GX-10	1626.75	14.82	22.40	3.66	14.33	3.27	1.23	3.19	0.56	3.16	0.66	1.77	0.27	1.64	0.22	17.38	71.18	59.71	11.47	5.21	6.11	1.15	0.70
GX-11	1629.50	38.12	60.56	8.89	31.87	5.55	1.07	4.06	0.74	4.32	1.00	2.99	0.49	3.50	0.50	27.14	163.67	146.06	17.61	8.29	7.36	0.66	0.75
Average		29.24	50.75	6.23	23.10	4.29	0.96	3.69	0.61	3.44	0.72	2.22	0.34	2.44	0.37	18.59	128.39	114.58	13.81	8.32	8.13	0.73	0.84