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Different accumulation mechanisms of organic matter in Cambrian sedimentary successions in the western and northeastern margins of the Tarim Basin, NW China
  • 2024-01-08
元数据
名   称 Different accumulation mechanisms of organic matter in Cambrian sedimentary successions in the western and northeastern margins of the Tarim Basin, NW China
科技资源标识 CSTR:11738.14.NCDC.XDA14.PP4456.2024
DOI 10.1016/j.jseaes.2020.104660
数据共享方式 开放下载
摘   要 Lower Cambrian black shales are widely distributed in the Tarim Basin, but those in the Keping area in the west
have a high total organic carbon (TOC) content different from those in the Kuluketage area in the northeast of the
basin. The Cambrian Yuertusi Formation in the Shiairike section (Keping) and the Xishanbulake Formation in the
Yaerdangshan section (Kuluketage) are time-equivalent and can be correlated. Black shales of the Yuertusi
Formation have lower δ13CKer values (<− 34‰) than the Xishanbulake Formations (δ13CKer values > − 4‰).
These values suggest that black shales in the Yuertusi Formation were dominated by benthic algae, whereas rocks
in the Xishanbulake Formation contain substantial amounts of planktonic algae. Analyses of trace elements
demonstrate an anoxic depositional environment, with high productivity in both the Yuertusi and Xishanbulake
Formations. The enhanced productivity was promoted by upwelling fluids and hydrothermal events, leading to
the enrichment of nutrient elements such as barium, cadmium, copper, phosphorus, nickel, vanadium, and zinc.
More terrigenous inorganic detritus input to the Xishanbulake Formation, which led to less amounts of organic
matter and degradation of planktonic algae during sedimentation, resulted in a lower TOC content than the
Yuertusi Formation
学科分类
170.50
关键词
Organic matter accumulation Stable organic/inorganic carbon otope distribution Lower Cambrian strata Tarim Basin
作者 Deng Q
数据量 19.5 MiB
论文类型： journal
论文网址： https://doi.org/10.1016/j.jseaes.2020.104660
期刊名称： Journal of Asian Earth Sciences
出版时间： 2021-03-01
引用和标注
数据引用
Deng Q. Different accumulation mechanisms of organic matter in Cambrian sedimentary successions in the western and northeastern margins of the Tarim Basin, NW China. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://cstr.cn/CSTR:11738.14.NCDC.XDA14.PP4456.2024.
Deng Q. Different accumulation mechanisms of organic matter in Cambrian sedimentary successions in the western and northeastern margins of the Tarim Basin, NW China. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://www.doi.org/10.1016/j.jseaes.2020.104660.
许可协议
知识共享许可协议   本作品采用 知识共享署名 4.0 国际许可协议进行许可。
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