Extremely High Primary Productivity and Organic Matter Enrichment in Lacustrine Sediments: Late Triassic Chang 7³ Sub-Member, Western Ordos Basin

Table 4

Vitrinite reflectance (R_o) of Chang 7³ and Chang 8 intervals from well DP1 in the western Ordos Basin.

Member	Depth (m)	Ro (%)	Standard deviation	Number
Chang 7^3	2743.87	0.89	0.02	23
	2743.97	0.88	0.01	21
	2745.33	0.91	0.02	16
	2745.74	0.92	0.02	31
	2746.87	0.92	0.01	22
	2748.00	0.93	0.02	11
	2749.16	0.93	0.02	23
	2750.18	0.92	0.01	24
	2750.97	0.94	0.02	26
	2752.14	0.93	0.02	20
	2753.35	0.90	0.02	21
	2753.91	0.95	0.03	25
	2754.71	0.94	0.01	26
	2755.67	0.95	0.03	11
	2756.52	0.98	0.01	26
	2757.04	0.94	0.02	23
	2758.16	0.95	0.02	24
	2759.42	0.95	0.01	28
	2760.48	0.96	0.02	22
	2761.58	0.96	0.02	16
	2762.68	0.95	0.02	14
	2763.93	0.94	0.01	16
	2764.87	0.95	0.03	25
	2765.51	0.95	0.02	12
	2765.89	0.96	0.01	22
	2767.10	0.95	0.02	23
	2772.20	0.97	0.02	24
	2773.93	0.96	0.02	21
	2775.07	0.97	0.02	23
	2776.89	0.96	0.02	24
	2778.06	0.98	0.01	20
Chang 8	2778.78	0.97	0.01	16
	2781.52	0.97	0.02	22