Rockmagnetic Characteristics of the Sediments from Heilinding Section in the
详细信息
- 责任者：Yan Xiaoli (Key Laboratory of Western China’s Environmental Systems ; Ministry of Education of China ; College of Resources and Environment ; Lanzhou University ; Lanzhou 730000 ; China) ; Zhang Qibo
- 刊名：Acta Sedimentologica Sinica
- 出版年：2010
- 卷期：28(6)
- 关键词：沉积物 ; sediments ; 古气候学 ; paleoclimatology ; 甘肃 ; Gansu Province
- 页码：p.1190-1197
- 图表：5 illus., 36 refs.
- 分类号：1400
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The Linxia Basin is a key place to study the paleoclimate change and the Tibetan Plateau uplift for its special place at the Asian monsoon margin and the northeastern Tibetan Plateau. Variations of the magnetic susceptibility and rockmagnetic characteristics from the Heilinding sediments in the Linxia Basin revealed a huge change occurred at the about 8.6 Ma based on a ideal palaeomagnetic dating (11.8~5.0 Ma). The authors argued such change was mainly caused by the change of the material origin driven by the uplift of the Tibetan Plateau. The magnetic susceptibility in the lake sediments is different from the loess-paleosol layers in the explanation of the environment and climate change.
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