Heavy minerals and provenance of the Malan loess on the Qinghai -Xizang(Tibet) Plateau and its adjacent area
- Received Date: 1995-12-18
- Publish Date: 1997-12-10
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Key words:
- Qinghai- Xizang /
- plateau /
- heavy mineral /
- malan loess
Abstract: Study of heavy minerals of the Malan loess on the Qinghai-Xizang Plateau and its adjacent areademonstrates that two loess depositional areas in heavy mineral can be clearly divided by the boundary ofKunlun Mts.- Buqing Mts- Xiqing Shan- Min Shan.To the north of this boundary, heavy minerals inthe Malan loess are hypometamorphic rocks and come chiefly from the Asian inland desert-gobi area;Tothe south, they are characterized by weathered parent rocks of volcanic, intrusive,and hypermetamorphicrocks and come from tills and periglacial sediments on the Qinghai-Xizang Plateau.The regional differ-ence in material in the sourec area, together with the effect of particular landform of the Plateau and thedifference of atmospheric circulation, may be mainly responsible for the difference of heavy minerals andprovenance of the Chinese Malan loess.
Citation: | Chen Guoying, Sun Shurong, FangXiaomin, Kang Shichang. Heavy minerals and provenance of the Malan loess on the Qinghai -Xizang(Tibet) Plateau and its adjacent area[J]. Acta Sedimentologica Sinica, 1997, 15(4): 134-142. |