Table 2 Rare earth element content in clay laminations and carbonate laminations of carbonate rocks.

From: Formation of carbonate laminae in shale and their impact on organic matter in Dongying depression

Lithology	Lamination	Sample	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	∑REE	∑LREE	∑HREE	(La/Yb)_n	δEu
Micritic carbonates rock	Micritic carbonates	FY1-2-1	20	38.2	4.22	16.5	2.97	0.75	2.64	0.55	2.1	0.45	1.11	0.22	1.17	0.16	91.04	82.64	8.4	11.52	0.82
		FY1-2-2	18.4	32.4	3.99	14.5	2.62	0.72	2.37	0.48	2.18	0.48	1.01	0.27	0.97	0.15	80.54	72.63	7.91	12.79	0.88
		FY1-3-1	31.4	53.9	5.84	22.4	3.46	0.66	3.24	0.54	2.59	0.5	1.22	0.21	1.26	0.18	127.40	117.66	9.74	16.80	0.60
		FY1-3-2	28.7	56	6.79	26.1	4.8	0.92	3.99	0.67	3.36	0.64	1.6	0.27	1.7	0.25	135.79	123.31	12.48	11.38	0.64
		NY1-1-1	17	30.9	3.58	13.8	2.65	0.65	2.22	0.39	1.99	0.39	1.21	0.26	1.04	0.15	76.23	68.58	7.65	11.02	0.82
		NY1-1-2	22.6	46.1	5.43	21.7	3.96	0.89	3.42	0.62	3.15	0.61	1.36	0.18	1.64	0.22	111.88	100.68	11.2	9.29	0.74
		AVG	23.02	42.92	4.98	19.17	3.41	0.77	2.98	0.54	2.56	0.51	1.25	0.24	1.3	0.19	103.81	94.27	9.57	12.13	0.75
	Clay	FY1-2-1	36.4	69.7	8.62	32.9	6.12	1.13	4.92	0.8	3.89	0.69	1.85	0.32	1.82	0.25	169.41	154.87	14.54	13.48	0.63
		FY1-2-2	21.9	39	4.5	17.7	4.2	0.77	2.64	0.46	2.17	0.42	1.13	0.21	1.14	0.16	95.40	88.07	8.33	12.95	0.71
		FY1-3-1	33.19	61.3	7.22	27.8	4.6	0.98	4.21	0.71	3.56	0.66	1.68	0.29	1.57	0.2	147.97	135.09	12.88	14.25	0.68
		FY1-3-2	34.4	61.6	6.9	25.8	4.35	0.78	3.71	0.62	3.13	0.6	1.81	0.31	2.06	0.3	146.37	133.83	12.54	11.26	0.59
		NY1-1-1	30	54.7	6.3	24.33	6.3	1.14	3.76	0.6	3.14	0.56	1.57	0.25	1.4	0.21	132.26	122.77	11.49	14.45	0.72
		NY1-1-2	25.7	48.6	5.58	21.21	3.85	0.83	3.17	0.55	2.9	0.59	1.53	0.29	1.59	0.23	116.62	105.77	10.85	10.90	0.73
		AVG	30.27	55.82	6.52	24.96	4.9	0.94	3.74	0.62	3.13	0.59	1.6	0.28	1.6	0.23	135.20	123.41	11.79	12.88	0.68
Grain carbonates rock	Grain carbonates	FYP1-1-1	28.3	56.4	6.52	24.5	3.5	0.92	3.2	0.67	3.26	0.59	1.59	0.25	1.4	0.21	132.47	120.14	11.17	13.63	0.84
		FYP1-1-2	21.9	44	5.37	21	3.9	0.91	3.3	0.5	3.07	0.54	1.5	0.23	1.31	0.18	108.34	97.08	10.63	11.27	0.78
		FY1-1-1	15.4	29.3	3.5	14.2	2.6	0.6	2.1	0.35	1.86	0.34	0.88	0.14	0.83	0.13	72.23	65.6	6.63	12.51	0.79
		FY1-1-2	16.2	27.1	3.26	12.2	2.37	0.61	2.16	0.37	1.94	0.36	0.96	0.17	0.96	0.14	68.67	61.74	7.06	11.38	0.82
		LY1-1-1	16.4	26.9	3.27	13.2	2.49	0.67	2.17	0.36	1.98	0.4	1.26	0.19	1.18	0.19	70.51	62.93	7.73	9.37	0.88
		LY1-1-2	17.3	31.8	3.6	14.73	2.93	0.77	2.52	0.46	2.36	0.46	1.17	0.2	1.13	0.16	79.49	71.13	8.46	10.32	0.87
		AVG	19.25	35.92	4.25	16.64	2.97	0.75	2.58	0.45	2.42	0.45	1.23	0.2	1.14	0.17	88.42	79.78	8.64	11.41	0.83
	Clay	FYP1-1-1	33.1	59.5	6.95	26.89	4.58	0.98	4.07	0.68	3.61	0.65	1.83	0.3	1.84	0.24	145.22	132	13.22	12.13	0.69
		FYP1-1-2	31.3	56.7	6.58	24.71	4.18	0.84	3.56	0.58	2.73	0.54	1.48	0.27	1.55	0.23	135.25	124.31	10.94	13.61	0.67
		FY1-1-1	27	49.2	5.75	21.6	3.73	0.68	3.18	0.52	2.95	0.57	1.61	0.32	1.8	0.25	119.16	107.96	11.2	10.11	0.60
		FY1-1-2	27.6	49.6	5.85	23.3	4.3	0.81	3.46	0.59	3.15	0.63	1.64	0.28	1.61	0.24	123.06	111.46	11.6	11.56	0.64
		LY1-1-1	33.24	63.9	7.3	28.8	5.32	0.98	4.55	0.79	3.96	0.72	2.03	0.32	1.78	0.28	153.97	139.54	14.43	12.59	0.61
		LY1-1-2	25.23	46.8	5.57	21.7	4.18	0.85	3.49	0.64	3.21	0.65	1.78	0.27	1.67	0.23	116.27	104.33	11.94	10.19	0.68
		AVG	29.58	54.28	6.33	24.5	4.38	0.86	3.72	0.63	3.27	0.63	1.73	0.29	1.71	0.25	132.16	119.93	12.23	11.70	0.65
NASC			32	73	7.9	33	5.7	1.24	5.2	0.85	5.8	1.04	3.4	0.5	3.1	0.45	132.16	152.84	20.34	6.96	0.70

(La/Yb)n is the ratio of the La and Yb elements after chondritization; δEu = Eu/Eu* values normalized by Chondrite. Chondrite-normalizing values from Taylor and Mclennan⁵⁹.

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Table 2 Rare earth element content in clay laminations and carbonate laminations of carbonate rocks.

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