Lacustrine source rock deposition in response to co-evolution of environments and organisms controlled by tectonic subsidence and climate, Bohai Bay Basin, China

The origin and distribution of crude oil in Zhu III sub-basin, Pearl River Mouth Basin, China

“…E 2 w has low gammacerane index (<0.09) and ETR (0.13-0.20), which indicate fresh-brackish water environment when Eocene Wenchang Formation was deposited. E 2 w displays relatively higher C 19 /C 23 TT (0.49-0.70) and C 24 Tet/C 26 TT (1.84-2.80) than E 3 e ( Fig.8) but obviously lower than that of Oligocene Dongying Formation (Ed) in Bozhong sub-basin (Hao et al, 2011b), which means terrigenous organic matter has limited contribution.…”

Paleoenvironmental reconstruction of the Late Santonian Songliao Paleo-lake

“…3b, 6), which is uniquely derived from dinoflagellates (Robinson et al, 1984). The sterane distribution has the potential to provide an indication of the primary producers in marine and lacustrine systems (Volkman, 1986;Sepúlveda et al, 2009;Hao et al, 2011). C 27 steranes originate mainly from phytoplankton, whereas C 29 steranes are derived predominantly from terrigenous higher plants (Volkman, 1986).…”

The effect of river-delta system on the formation of the source rocks in the Baiyun Sag, Pearl River Mouth Basin

“…Firstly, nutrients transported by rivers give rise to surface plankton boom, leading to high biological productivity, which is beneficial to the formation of high quality source rocks (Hao et al, 2011). However, marine productivity can also be diluted by detrital materials transported by rivers.…”