Carbon and oxygen isotopic composition of carbonate cements of different phases in terrigenous siliciclastic reservoirs and significance for their origin: A case study from sandstones of the Triassic Yanchang Formation, southwestern Ordos Basin,ChinaOA
Carbon and oxygen isotopic composition of carbonate cements of different phases in terrigenous siliciclastic reservoirs and significance for their origin: A case study from sandstones of the Triassic Yanchang Formation, southwestern Ordos Basin,China
Early carbonate cements in the Yanchang Formation sandstones are composed mainly of calcite with relatively heavier carbon isotope (their δ18O values range from -0.3‰-0.1‰) and lighter oxygen isotope (their ‰18O values range …查看全部>>
Early carbonate cements in the Yanchang Formation sandstones are composed mainly of calcite with relatively heavier carbon isotope (their δ18O values range from -0.3‰-0.1‰) and lighter oxygen isotope (their ‰18O values range from -22.1‰--19.5‰). Generally, they are closely related to the direct precipitation of oversaturated calcium carbonate from alkaline lake water. This kind of cementation plays an important role in enhancing the anti-compaction ability o…查看全部>>
WANG Qi;ZHUO Xizhun;CHEN Guojun;LI Xiaoyan
Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, ChinaGraduate University of Chinese Academy of Sciences, Beifing 100039, ChinaKey Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, ChinaGraduate University of Chinese Academy of Sciences, Beifing 100039, China
地质学
carbonate cementO and C isotopic compositionclastic reservoircarbon sourceOrdos Basin
carbonate cementO and C isotopic compositionclastic reservoircarbon sourceOrdos Basin
《中国地球化学学报（英文版）》 2008 (3)
249-256,8
This study is financially supported jointly by National"973"Research Program(Nos.2003CB214606,2005CB422105),the Knowledge Innovation Proiect of Chinese Academy of Sciences (KZCX3-SW-147)and the"Light of the West"Project sponsored by the Chinese Academy of Sciences.
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