煤田地质与勘探2016，Vol.44Issue(4)：14-19,6.DOI:10.3969/j.issn.1001-1986.2016.04.003
川西坳陷中段中侏罗统沙溪庙组碎屑组分特征对物源的约束
Detrital composition characteristics of the Middle Jurassic Shaximiao Formation and constraints on provenance in the middle of Western Sichuan depression
摘要
Abstract
In order to explore its source area and properties of source in the Middle Jurassic Shaximiao Formation of the middle of Western Sichuan depression, clastic rock debris composition features and the projection point of Dickinson triangle were applied to discuss deeply the source area and the attributes of source area in the study area. The results show that Zhongjiang,Xindu and other areas in the northeast are characterized by low quartz content and high feldspar content, belong to tectonic background of cut island arc, basement uplift, transitional continent. But Yazihe, Xiaoquan and other areas in the west of the study area are characterized by high quartz content and low feldspar content, having relatively high metamorphic detrital content, belong to the tectonic setting of recycling orogeny. Combined with the evoluation characteristics of the periperial orogenetic belt during deposition of Shaximiao Formation, it is considered that Micang mountain and Daba mountain were the major provenance areas of Zhongjiang,Xindu and other areas in the north of the study area, while Longmenshang was the major provenance area of Yazihe, Xiaoquan and other areas in the west of the study area.关键词
川西坳陷/沙溪庙组/砂岩碎屑组分/物源分析Key words
West Sichuan depression/Shaximiao Formation/detrital composition of sandstone/provenance analysis分类
天文与地球科学引用本文复制引用
钱利军,欧莉华,林良彪,郝强,徐胜林..川西坳陷中段中侏罗统沙溪庙组碎屑组分特征对物源的约束[J].煤田地质与勘探,2016,44(4):14-19,6.基金项目
国家科技重大专项课题(2011ZX05002-004)；四川省教育厅科研项目(14ZB0361)；成都理工大学工程技术学院项目(C122014012) @@@@National Science and Technology Major Project(2011ZX05002-004)；Scientific Research Project of Education Department of Sichuan(14ZB0361)；The Engineering & Technical College of Chengdu University of Technology(C122014012) （2011ZX05002-004）
