s
  • 首页
  • 学报简介
  • 编委会
  • 投稿指南
  • 常见问题解答
  • 预出版
  • 过刊浏览
  • 联系我们
  • Engilsh

本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(2)   不支持(0)

Petrography and Geochemistry of the Upper Triassic Sandstones from the Western Ordos Basin, NW China: Provenance and Tectonic Implications
  修订日期:2018-12-20  点此下载全文
引用本文:ZHAO Xiaochen,LIU Chiyang,XIAO Bo,ZHAO Yan,CHEN Yingtao.2019.Petrography and Geochemistry of the Upper Triassic Sandstones from the Western Ordos Basin, NW China: Provenance and Tectonic Implications[J].ACTA GEOLOGICA SINICA(English edition),93(6):1835~1849
摘要点击次数: 66
全文下载次数: 84
DOI:10.1111/1755-6724.13863
作者单位E-mail
ZHAO Xiaochen 1 College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China zxcnwu@126.com 
LIU Chiyang 2 State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China  
XIAO Bo 3 Fifth Oil Production Plant of Changqing Oilfield, Xi’an 710200, China  
ZHAO Yan 4 Chang’an University, Xi’an 710064, China  
CHEN Yingtao 1 College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China  
 
Author NameAffiliationE-mail
ZHAO Xiaochen 1 College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China zxcnwu@126.com 
LIU Chiyang 2 State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China  
XIAO Bo 3 Fifth Oil Production Plant of Changqing Oilfield, Xi’an 710200, China  
ZHAO Yan 4 Chang’an University, Xi’an 710064, China  
CHEN Yingtao 1 College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China  
Abstract:Petrographic and geochemical characteristics of the Upper Triassic sandstones in the western Ordos Basin were studied to provide insight into weathering characteristics, provenance, and tectonic implications. Petrographic features show that the sandstones are characterized by low-medium compositional maturity and textural maturity. The CIA and CIW values reveal weak and moderate weathering history in the source area. The geochemical characteristics together with palaeocurrent data show that the northwestern sediments were mainly derived from the Alxa Block with a typical recycled nature, while the provenance of the western and southwestern sediments were mainly from the Qinling-Qilian Orogenic Belt. The tectonic setting discrimination diagrams signify that the parent rocks of sandstones in the western and southern Ordos Basin were mainly developed from continental island arc, which is closely related to the evolution of the Qinling-Qilian Orogenic Belt. However, the sandstones in the northwestern Ordos Basin show complex features, which may be resulted from a typical recycling process. Overall evidence from petrography, geochemistry and sedimentology, together with previous researches suggest the Kongtongshan and Helanshan areas were the southwestern and northwestern boundary of the Ordos Basin, respectively, and there was no clear boundary between the Hexi Corridor Belt and Ordos Basin, where a large, uniform sediment dispersal system developed during the Late Triassic.
keywords:western Ordos Basin, upper Triassic, geochemistry, petrography, provenance analysis, proto-boundary
查看全文  查看/发表评论  下载PDF阅读器
您是第91291023位访问者  京ICP备05032737号-7  京公网 安备110102004559
版权所有:Acta Geologica Sinica (English Edition)
主管单位:中国科学技术协会 主办单位:中国地质学会
地  址: 北京市阜成门外百万庄26号 邮编:100037 电话:010-68999024 E-mail: geoacta@163.com
本系统由北京勤云科技发展有限公司设计 

京公网安备 11010202007916号

WeChat