渤海湾盆地东营凹陷沉积环境和古生产力对优质烃源岩形成的控制—

渤海湾盆地东营凹陷沉积环境和古生产力对优质烃源岩形成的控制——以牛庄洼陷沙河街组为例

段玮, 曾翔, 蔡进功, 李政, 王长轩, 林茹

Control of sedimentary environment and paleoproductivity on the formation of high-quality hydrocarbon source rocks in Dongying Sag, Bohai Bay Basin: Case study of the Shahejie Formation in Niuzhuang sag

Wei DUAN, Xiang ZENG, Jingong CAI, Zheng LI, Changxuan WANG, Ru LIN

表3 沙河街组各层段古环境指标数据

Table 3 Paleoenvironmental index data of every member in Shahejie Formation

层位	Es₃^z	Es₃^x	Es₄^cs	Es₄^cx
B/Ga	$\frac{0.07 ~ 0.77}{0.43}$	$\frac{0.02 ~ 1.46}{0.53}$	$\frac{0.07 ~ 2.18}{0.94}$	$\frac{0.01 ~ 7.17}{1.98}$
Sr/Ba	$\frac{0.28 ~ 1.15}{0.66}$	$\frac{0.07 ~ 3.91}{2.14}$	$\frac{0.07 ~ 7.86}{3.89}$	$\frac{0.22 ~ 14.34}{5.55}$
Ce/La	$\frac{1.92 ~ 2.09}{2.01}$	$\frac{1.89 ~ 2.11}{2.01}$	$\frac{1.87 ~ 2.11}{1.99}$	$\frac{1.89 ~ 2.15}{2.03}$
Ce_amon	$\frac{- 0.038 ~ - 0.012}{- 0.026}$	$\frac{- 0.038 ~ - 0.015}{- 0.026}$	$\frac{- 0.044 ~ - 0.013}{- 0.028}$	$\frac{- 0.051 ~ - 0.008}{- 0.027}$
Mo_EF/U_EF	$\frac{1.98 ~ 8.20}{3.02}$	$\frac{0.89 ~ 5.69}{3.45}$	$\frac{0.73 ~ 11.31}{3.58}$	$\frac{0.61 ~ 12.40}{3.01}$
Rb/K	$\frac{44.38 ~ 61.85}{52.82}$	$\frac{49.73 ~ 76.21}{63.95}$	$\frac{50.51 ~ 73.18}{61.50}$	$\frac{37.05 ~ 52.98}{49.05}$
Zr/Al	$\frac{11.96 ~ 20.24}{16.06}$	$\frac{11.94 ~ 17.96}{15.22}$	$\frac{10.96 ~ 20.42}{15.50}$	$\frac{11.95 ~ 24.18}{19.40}$