Palaeoenvironment and Its Control on the Formation of Miocene Marine Source Rocks in the Qiongdongnan Basin, Northern South China Sea

Table 2

Basic inorganic geochemical parameters for the Miocene marine source rocks of well BD20-1-1 in the Qiongdongnan Basin.

Depth (m)	Strata	Al/Ti	P/Ti	U/Th	Ni/Co
2290	N1m	14.68	0.10	0.21	4.32
2355	N1s	21.48	0.17	0.22	3.31
2395	N1s	20.38	0.15	0.22	4.08
2455	N1s	19.63	0.18	0.22	3.11
2515	N1s	18.51	0.17	0.22	3.27
2540	N1s	17.81	0.11	0.20	3.56
2570	N1s	19.26	0.11	0.19	3.32
2745	N1s	17.04	0.07	0.21	2.75
2775	N1s	16.72	0.08	0.20	3.26
2906	N1s	17.79	0.08	0.18	2.88
2964	N1s	18.43	0.13	0.19	2.67
2994	N1s	37.38	0.08	0.20	2.86
3050	N1s	19.48	0.08	0.20	3.28
3078	N1s	18.08	0.11	0.21	3.34