• 责任者：Du Houfa (College of Earth Sciences ; East China Institute of Technology ; Fuzhou 344000 ; China) ; Zhu Zhijun
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2011
• 卷期：30(3)
• 关键词：砂岩 ; sandstone ; 物源分析 ; provenance analysis ; 青藏高原 ; Qinghai-Tibetan Plateau
• 页码：p.401-408
• 图表：1 illus., 2 tables, 31 refs.
• 分类号：0803
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

Nangqen basin is a typical representative of the medium-mini-type Paleogene basins controlled by local NNW-treading faults distributed along Jinsha River-Red River belt on the northeastern margin of Qinghai-Tibet plateau. According to the analysis of geochemical features of sandstones of the Gonjo Formation, the characteristics of paleoclimate, paleoenvironment and provenance in the study area were revealed. The results indicate that the sandstones of Gonjo Formation belong to recycling orogenic belt area, and only the samples of Eg2 came from polycyclic orogenic belt area and cratonic interior. From the viewpoint of geological features as well as the position of composition plots, it is considered that the provenance evolution began from stable cratonic interior to lithic recycling orogenic belt and polycyclic orogenic belt area.