摘要
利用数据统计分析方法,对岩石薄片数据、古水流数据、岩石化学数据等进行了统计分析,在此基础上研究了南盘江盆地中三叠统物源和沉积构造背景。结果表明:中三叠统南盘江盆地古水流方向为北西西方向;沉积物主要来源于盆地一侧的再旋回造山带;再旋回造山带应该在盆地的东南方向;沉积构造背景以大陆岛弧为主,兼有活动陆缘的性质。
In order to clarify the provenance and tectonic setting of Nanpanjiang Basin in the middle Triassic, thin section data, palaeocurrent data and the geochemical data were counted and analyzed by using the statistic and analytic method. The results show that the paleocurrent direction in the middle Triassic is NWW in Nanpanjiang Basin, and the sediment comes from the recycled orogen belt which lies in the southeast part of the basin. The tectonic setting is the combination of island arc related to a continent and an active continental margin.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第6期22-27,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家自然科学基金项目(49972037)
关键词
南盘江盆地
古流向
中三叠统
物源
构造背景
Nanpanjiang Basin
paleocurrent direction
middle Triassic
provenance
tectonic setting
