地质与资源2019，Vol.28Issue(2)：134-139,159,7.
四川盆地东北部上三叠统须家河组四段物源分析
PROVENANCE ANALYSIS ON THE FOURTH MEMBER OF XUJIAHE FORMATION, UPPER TRIAQSSIC IN THE NORTHEASTERN SICHUAN BASIN
摘要
Abstract
The 4th Member of Xujiahe Formation,UPPer Triassic,in the northeastern Sichuan Basin is a key layer for oil-gas exPloration. The dePosition in the area is affected by multiPle Provenances. By analyzing the heavy minerals, clastic constituents,debris comPositions and Paleocurrent directions,it is finally determined that the Provenances originate from three directions,namely,Longmenshan,Dabashan and Micangshan. The Provenance of the western Yuanba is from Longmenshan fold belt;that of the eastern Yuanba,from the southeast of Dabashan fold belt;that of the central Yuanba,from the mixed accumulation of Longmenshan and Dabashan;that of the western Tongnanba area, from the Micangshan fold belt;while that of the eastern Tongnanba area,from the mixed accumulation of Dabashan and Micangshan.关键词
四川盆地东北部/须家河组四段/物源方向Key words
northeast of Sichuan Basin/4th Member of Xujiahe Formation/Provenance direction分类
天文与地球科学引用本文复制引用
毕亦巍,张昌民..四川盆地东北部上三叠统须家河组四段物源分析[J].地质与资源,2019,28(2):134-139,159,7.基金项目
国家科技重大专项"川东陆相致密碎屑岩油气富集规律与目标优选"(2016ZX05002-004-003). （2016ZX05002-004-003）
