The Closure of Paleogene Basins of East-Central Tibet in Response to Tectonic, Sedimentation, Magmatism and Paleoclimate
详细信息
- 责任者：Zhou Jiangyu (Key Laboratory of Tectonics and Petroleum Resources ; Ministry of Education ; China University of Geosciences ; Wuhan 430074 ; China) ; Wang Jianghai
- 刊名：Acta Geologica Sinica
- 出版年：2011
- 卷期：85(2)
- 关键词：盆地分析 ; basin analysis ; 古近纪 ; Paleogene ; 青藏高原 ; Qinghai-Tibetan Plateau
- 页码：p.172-178
- 图表：4 illus., 1 palte, 1 table, 28 refs.
- 分类号：1200
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
Summary name="EnDivSummary">In east-central Tibet, many Paleogene elongate basins with medium-mini-type are distributed along the large-scale arc-shaped strike-slip and thrust belt of the Nangqian-Yushu and Batang-Lijiang. Detailed mapping, structural-sedimentologic, biostratigraphic, geochemical, and 40Ar/39Ar chronologic data from five Pleogene basins (Dongba, Shanglaxiu, Nangqian, Gongjue, and Mangkang) in the Nangqian-Yushu and Batang region of east-central Tibet indicate that the strata in basin margin developed a large-scale of tilting to form high-steep dip and extrusing syncline, fold and deformation, filled amaranth clastics interbeded with volcanoclastic rock, carbonite and gypsum in basins, and incised by late magmatite.