Sedimentary Petrology and Geochemistry of Permian-Triassic Carbonate Mounds in Long-Stone Mountains in Bayanh ar Basin
详细信息
- 责任者：Huang Huagu (Key Laboratory of Marginal Sea Geology ; Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Di Pengfei
- 刊名：Acta Sedimentologica Sinica
- 出版年：2012
- 卷期：30(1)
- 关键词：碳酸盐岩 ; carbonate rocks ; 沉积岩 ; sedimentary rocks ; 岩石地球化学 ; lithogeochemistry ; 青海 ; Qinghai Province
- 页码：p.54-64
- 图表：6 illus., 7 tables, 44 refs.
- 分类号：0803
- 出版序号：20130173
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The Bayanhar sedimentary basin is a hotspot and key area in studying Qinghai-Tibetan Plateau geotectonics and Tethys,which is located in the northeast of Qinghai-Tibetan Plateau hinderland.The domination sedimention of Bayanhar Basin which has some different sizes of limestone platforms or limestone mounds are composed of Triassic turbidite rocks.In this paper,the authors study the sedimentary environment of hummocky limestone by the way of sedimentary petrology and geochemistry. Samples were collected from four isolated carbonate mounds on Long Stone Mountains of Bayan Har Basin,Qinghai Province. The results show that the Permian-Triassic hummocky limestone might be the product of rapid deposition in relatively oxic environment of open sea.