Table 1.

Summary of geochemical results.

		δ13Ccarb (‰)		δ13Corg (‰)		δ15N (‰)		TOC (%)		n
Environment	Section	Base	Top	Base	Top	Base	Top	Base	Top
Shelf Lagoon	Xiangerwan	−4.1	−0.6	−37.7	−36.9	+4.4	+3.6	2.7	4.6	7
	Zhimaping	−7.1	−0.2	−38.6	−34.6	+3.7	+2.9	5.0	1.3	51
	Qinglinkou	−5.8	−3.6	−37.0	−27.7	+3.3	+2.3	0.3	9.6	15
Slope	Taoying	−4.3*	−11.3*	−35.7	−38.5	+2.5	+3.7	1.1	1.7	10
	Xiajiaomeng	−3.7	−1.2	−32.8	−29.8	+4.3	+2.6	8.3	6.2	6
Basin	Fengtan	−11.5**	−15.9**	−32.0	−34.4	+5.4	+3.4	0.3	0.9	21

Data show end-member values of Member IV (base and top). In sections where data at the base and top of Member IV were not available, data from the Member III-Member IV and Member IV-Dengying Fm. boundaries were used and are expressed in bold. (*) represents data from an analogous upper slope environment section (Siduping³⁰). (**) represents data from the Fengtan section²⁸. n= number of samples.