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Geochemical characteristics and sedimentary environment in source rocks of Doushantuo Formation, northern Sichuan Basin
DENG Jian, DU Chongjiao, ZHANG Lei, LIU Xu, LI Longlong
Natural Gas Exploration and Development, 2025, 48(3): 1-13.   DOI: 10.12055/gaskk.issn.1673-3177.2025.03.001

地区 剖面名称 有机碳含量 样品数 干酪根碳同位素值 样品数 有机质成熟度 样品数
川西北 绵竹清平 $\frac{0.10 \% \sim 1.87 \%}{\text { 平均值 } 1.36 \%}$ 4 $\frac{-33.3 \% \sim-28.8 \%}{\text { 平均值 }-31.2 \%}$ 4 2.40% 1
宁强阳平关 $\frac{0.22 \% \sim 0.96 \%}{\text { 平均值 } 0.71 \%}$ 14 $\frac{-27.3 \% \sim-25.5 \%}{\text { 平均值 }-26.5 \%}$ 7 3.76% 2
川东北 镇巴小洋坝 $\frac{0.09 \% \sim 0.90 \%}{\text { 平均值 } 0.61 \%}$ 67 $\frac{-34.9 \% \sim-30.7 \%}{\text { 平均值 }-32.0 \%}$ 4 3.10% 1
城口高燕 $\frac{0.07 \% \sim 6.64 \%}{\text { 平均值 } 2.60 \%}$ 45 $\frac{-36.2 \% \sim-31.1 \%}{\text { 平均值 }-33.3 \%}$ 5 3.31% 2
Table 1 Organic geochemical characteristics in source rocks of the Sinian Doushantuo Formation, northern Sichuan Basin
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