ncdc logo title
ncdc_logo
Volcanic events-related hydrothermal dolomitisation and silicification controlled by intra-cratonic strike-slip fault systems: Insights from the northern slope of the Tazhong Uplift, Tarim Basin, China
  • 2024-01-08
元数据
名   称 Volcanic events-related hydrothermal dolomitisation and silicification controlled by intra-cratonic strike-slip fault systems: Insights from the northern slope of the Tazhong Uplift, Tarim Basin, China
科技资源标识 CSTR:11738.14.NCDC.XDA14.PP5764.2024
DOI 10.1111/bre.12562
数据共享方式 开放下载
摘   要 Ordovician carbonate rocks on the northern slope of the Tazhong Uplift in the Tarim Basin are modified to varying degrees by hydrothermal fluids related to multiple tectonic-thermal events, but the nature, origin and circulation mechanisms of such hydrothermal fluids remain debated. In this article, in situ rare-earth elements and yttrium (REE + Y) concentrations, previously published geochemical datasets and petrographic investigations are integrated to develop a thermo-tectonic evolution model to improve understanding of silicification and dolomitisation occurring in the interior of the craton basin. δ30Si values, REE + Y ratios and fluid mixing models using modern black smoker fluid and seawater indicate that magma-sourced hydrothermal fluids, rather than basinal brine heated by magmatism, are responsible for the precipitation of cherts. Petrological and geochemical evidence suggests that deep-seated, ultramafic-derived hydrothermal fluids and/or magmatic fluids associated with Permian volcanism may have been involved in the formation of hydrothermal dolomites in the study area. Accompanying formation and reactivation of the strike-slip faults on the northern slope of the Tazhong Uplift, small volumes of hydrothermal fluids might have been triggered by seismic pumping. The early formed strike-slip fault systems may also have served as conduits for the subsequent large-scale transport of deep-seated, ultramafic-derived thermal fluids and/or Permian magmatic fluids, along which fluids were transported upwards at high flow rates. Carbonation of ultramafic rocks through interaction with deep-seated hydrothermal fluids rich in CO2 may have served as a magnesium and silica source for dolomitisation and silicification. Trans-tensional troughs on NNE-trending strike-slip faults with positive flower structure are favourable locations for dolomitisation and silicification.
学科分类
170.50
关键词
dolomitisation silicification strike-slip faults volcanism
作者 Duan Wei,Zhiqian Gao,Tailiang Fan,Yongbin Niu,Ruixin Guo
论文类型： journal
论文网址： Volcanic events‐related hydrothermal dolomitisation and silicification controlled by intra‐cratonic strike‐slip fault systems: Insights from the northern slope of the Tazhong Uplift, Tarim Basin, China - Wei - 2021 - Basin Research - Wiley Online Library
期刊名称： Basin research
出版时间： 2021-09-01
引用和标注
数据引用
Duan Wei,Zhiqian Gao,Tailiang Fan,Yongbin Niu,Ruixin Guo. Volcanic events-related hydrothermal dolomitisation and silicification controlled by intra-cratonic strike-slip fault systems: Insights from the northern slope of the Tazhong Uplift, Tarim Basin, 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.PP5764.2024.
Duan Wei,Zhiqian Gao,Tailiang Fan,Yongbin Niu,Ruixin Guo. Volcanic events-related hydrothermal dolomitisation and silicification controlled by intra-cratonic strike-slip fault systems: Insights from the northern slope of the Tazhong Uplift, Tarim Basin, 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/10.1111/bre.12562.
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。
项目信息 详情

© 中国科学院西北生态环境资源研究院 2005- 备案号：陇ICP备2021001824号-21

兰州市东岗西路320号, 730000, 电话: 0931-4967592,0931-4967596