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Element geochemistry of lake sediment from Gourenco Lake , Kekexili , Qinghai-Xizang plateau and its significance for climate variation (PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2004年第03期
Page:
64-68
Research Field:
Publishing date:

Info

Title:
Element geochemistry of lake sediment from Gourenco Lake , Kekexili , Qinghai-Xizang plateau and its significance for climate variation
Author(s):
WU Yan-hong; LI Shi-jie; XIA Wei-lan
Nanjing Institute of Geography and Limnology , Chinese Academy of Sciences , Nanjing 210008 , China
Keywords:
element ; CIA; chemical weathering ; Little Ice Age ; Gourenco Lake ; Qinghai
PACS:
P534.63
DOI:
-
Abstract:
Element geochemistry of lake sediment has been widely used to detect climate change because that elements composition and their ratios reflect the weathering degree in the source area .According to the elements composition of lake sediment from Gourenco Lake , Kekexili , Qinghai-Xizang Plateau , CIA, ICV and other element ratios has been studied to understand the weathering sequence of this area since 1400AD.As the result , the weathering is very weak, so that the element composition change is more sensitive to climate change .The climate in this area fluctuated and tended to arid since 1400AD.The Little Ice Age began from 1420AD, and the coldest period was 1480～ 1520AD.

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Last Update: 2004-09-20