Sedimentary Environment Variation and Its Tectonic Significance of Mazar Tagh in the Middle Tarim Basin
详细信息
- 责任者：Si Jialiang (Key Laboratory of Continental Dynamics ; Ministry of Land and Resources ; Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Li Haibing
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(1)
- 关键词：第四纪 ; Quaternary ; 古环境 ; paleoenvironment ; 塔里木盆地 ; Tarim Basin
- 页码：p.321-332
- 图表：5 illus., 1 table, 39 refs.
- 分类号：1400
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The continuous Cenozoic strata are well outcropped in the Mazar Tagh, the central Tarim Basin. A total of more than two hundreds of bulk samples were collected from the ～140 m long sedimentary section. The result of field survey together with oxygen and carbon stable isotopic data are given; the paleoenvironment variation and its tectonic significances are also introduced. The Mid-Pleistocene climate transition is characterized by significant sediment assemblage change and drastically fluctuated stable isotopic data. Near the top of the section, the pronounced positive δ13C drift and negative δ18O excursion might indicate a extreme climate change and possible increasing influence of ice-snow melting water.
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