BIOLOGIC ASSEMBLAGE AND FACIES OF CAMBRIAN-ORDOVICIAN IN TARIM BASIN

Abstract

Abstract: Cambrian-Ordovician beds in Tarim basin are marine ones dominated by carbonatite, and with part of terrigenous clastic rocks and turbidites containing plenty of organism fossils. Varing palaeontological assemblage of different areas showed the difference in sedimentary environment and condition. They can be divided into 16 palaeontological assemblage types and 6 biofacies zones, providing the important reference for resumption of Cambrian-Ordovician sedimentary environment and seeking for profitable source sequences and reservoir rocks.

Key words: Tarim basin, Cambrian, Ordovician, Sedimentary environment, Biofacies, Biological group

He Yuanbi, Wang Zhenya, Chen Jingshan, Zhou Lu, Shen Zhaoguo, Luo Li, Mu Shuguang. BIOLOGIC ASSEMBLAGE AND FACIES OF CAMBRIAN-ORDOVICIAN IN TARIM BASIN[J]. Xinjiang Petroleum Geology, 1995, 16(2): 114-122.

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BIOLOGIC ASSEMBLAGE AND FACIES OF CAMBRIAN-ORDOVICIAN IN TARIM BASIN

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