New Evidence from the Sediments of Huguangyan Maar Lake, Southern China For the Younger Dr

author:maar hits:
Author:WANG Wen-yuan1,2 LIU Jia-qi3

(1.Department of Geology ,Peking University.Beijing100871;2.The Administrative Center for China's Agenda 21 Beijing100089;3 Institute of Geology ,Chinese Academy of sciences.Beiifng100029)

Key words:Low latitude;Maar Lake;Younger Dryas event;Monsoon

Abstract:

Maar Lake recorded paleoclimate changes like a natural gauge. The morphological features of Maar Lake ensue to homogeneity of detritus input and high-resolution record of paleoenvironmental variations.The research of Maar Lake will play an important role for reconstructing paleoclimate history.

Maar Lake Huguangyan is located Leizhou Peninsula,the southern China.Near Pacific Ocean in the cast and South China Sea in the south.Where which is intersect site of eastern southeast monsoon and southwest monsoon and sensitive to climate change.The sediments from Maar lake Huguangyan have been recovered.The concentrations of biogenic silica, total organic carbon, total nitrogen and total hydrogen inferred from the sediments of Maar Lake Huguangyan provide a climate record of the last deglaciation with century resolution.The records fully demonstrate the Younger Dryas event is well documented in the southern China,which occurred synchronously with that recorded in Greenland,and point to the cool and dry climatic conditions during this period, because of the remarkable decrease of precipitation and temperature.These results suggest the rapid reorganization of atmospheric circulation in monsoon climate system in short time,and reflect that the intensity the summer monsoon was reduced during the Younger Dryas period.


湖光岩砂石的释光剂量研究

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