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Carbon Isotope Stratigraphy of the Cambrian System in the Eastern Tarim Basin, China
投稿时间:2022-02-14  修订日期:2022-04-15  点此下载全文
引用本文:WANG Huajian,SU Jin,WANG Xiaomei,YE Yuntao,FANG Yu,ZHANG Shuichang.2022.Carbon Isotope Stratigraphy of the Cambrian System in the Eastern Tarim Basin, China[J].ACTA GEOLOGICA SINICA(English edition),96(4):1277~1293
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DOI:10.1111/1755-6724.14972
作者单位E-mail
WANG Huajian Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
SU Jin Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
WANG Xiaomei Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
YE Yuntao Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
FANG Yu Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
ZHANG Shuichang Research Institute of Petroleum Exploration & Development, Beijing 100083, China sczhang@petrochina.com.cn 
 
Author NameAffiliationE-mail
WANG Huajian Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
SU Jin Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
WANG Xiaomei Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
YE Yuntao Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
FANG Yu Research Institute of Petroleum Exploration & Development, Beijing 100083, China  
ZHANG Shuichang Research Institute of Petroleum Exploration & Development, Beijing 100083, China sczhang@petrochina.com.cn 
Abstract:The ultra-deep Cambrian System in the Tarim Basin is an important field for petroleum exploration, while fine division of the Cambrian strata remains controversial. In recent years, carbon isotope stratigraphy of the Cambrian System has been established and widely used. Here, we report an integrated profile of carbonate and organic carbon isotopic values (δ13Ccarb and δ13Corg) from cuttings of the Tadong2 Well in the eastern Tarim Basin. Three carbon isotope anomalies of BACE, ROECE and SPICE were recognized on the δ13Ccarb profile. Three apogees and a nadir on the δ13Corg profile and the onset of ROECE on the δ13Ccarb profile were suggested as boundaries of the present four series of the Cambrian System. Suggested boundaries are easily identifiable on the gamma logging profile and is consistent with the previous division scheme, based on biostratigraphic evidence in outcrop sections. Abnormal carbon cycle perturbations and organic carbon burials during the BACE and SPICE events might be related to the reduction and expansion of a huge dissolved organic carbon reservoir in the deep ocean of the ancient Tarim Basin.
keywords:organic carbon, black shale, dissolved organic carbon, BACE, SPICE, stratigraphic division
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版权所有:Acta Geologica Sinica (English Edition)
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