The δ18O variation of a stalagmite from Qixing Cave,Guizhou Province and indi-cated climate change during the Holocene

被引：5

作者：

CAI Yanjun

Karst Dynamics Laboratory

Department of Earth and Space Science

机构：

来源：

ChineseScienceBulletin | 2001年 / 22期

关键词：

stalagmite; Holocene; southwest monsoon;

D O I：

暂无

中图分类号：

P532 [古气候学];

学科分类号：

070903 ;

摘要：

A stalagmite from Qixing Cave, Guizhou Province was dated with the TIMS U-series method and its oxygen isotope composition was analyzed. On the basis of the ages and the variations of the δ18O of the stalagmite, the climate change of the last 7.7 ka has been reconstructed in this area: 7.7-5.8 ka, summer monsoon maximum period; 5.8-3.8 ka summer monsoon weakening period; 3.8-0.15 ka, weakened summer monsoon and high amplitude climate fluctuations period. We put forward that the increasing trend of δ18O of the stalagmite reflected not only the weakening of the summer monsoon, which was caused by the decreasing of solar radiation in the Northern Hemisphere, but also the possibly decreasing contribution of the southwest monsoon to the rainfall of this area. These results are consistent with the output of the numerical climate-model modeling. The high amplitude fluctuation of the δ18O may imply the quick shift of the contributions of different moisture sources to the precipitation in this area.

引用

页码：1904 / 1908

页数：5

共 13 条

[1]

Correlation between high-resolution climate records from a Nanjing stalagmite and GRIP ice core during the last glaciation[J]. 汪永进 ,吴江滢 ,吴金全 ,穆西南 ,许汉奎 ,陈骏.Science in China(Series D:Earth Sciences). 2001(01)

[2] 云南程海现代沉积物环境记录研究 [J].

陈敬安 ;

万国江 .

矿物学报, 2000, (02) :112-116

[3] Oxygen and carbon isotopic characteristics of rainwater,drip water and present speleothems in a cave in Guilin area,and their environmental meanings [J].

李彬 ;

袁道先 ;

覃嘉铭 ;

林玉石 ;

张美良 .

ScienceinChina(SeriesD:EarthSciences), 2000, (03) :277-285

[4]

Preliminary study on climatic signals of stable isotopes from Holocene speleothems under monsoon condition[J]. TAN Ming 1, LIU Dongsheng 1, ZHONG Hua 1, QIN Xiaoguang 1,LI Hongchun 2, ZHAO Shusen 1, LI Tieying 3, LU Jinbo 3and LU Xiangyang 4 1. Institute of Geology, Chinese Academy of Sciences, Beijing 100029, China;2. Department of Earth Sciences, Univ.Chinese Science Bulletin. 1998(06)

[5]

High-precision timing of the Quaternary standard samples with thermal ionization mass spectrometry (TIMS) U-series method[J]. PENG Zicheng\+1, WANG Zhaorong\+1, SUN Weidong\+1, MA Zhibang\+2, XIA Ming\+2, ZHANG Chenhui\+2, CHEN Wenji\+3, ZHANG Zhonglu\+3 and AN Zhisheng\+4 1. Department of Earth and Space Science, University of Science and Technology of China, Hefei 230026, Ch.Chinese Science Bulletin. 1998(04)

[6] Asynchronous Holocene optimum of the East Asian monsoon [J].

An, ZS ;

Porter, SC ;

Kutzbach, JE ;

Wu, XH ;

Wang, SM ;

Liu, XD ;

Li, XQ ;

Zhou, WJ .

QUATERNARY SCIENCE REVIEWS, 2000, 19 (08) :743-762

[7]

Speleothem Evidence for Changes in Indian Summer Monsoon Precipitation over the Last ～2300 Years[J] . Rhawn F. Denniston,Luis A. González,Yemane Asmerom,Ram H. Sharma,Mark K. Reagan.Quaternary Research . 2000 (2)

[8]

Mg, Sr and Sr isotope geochemistry of a Belgian Holocene speleothem: implications for paleoclimate reconstructions[J] . Sophie Verheyden,Eddy Keppens,Ian J. Fairchild,Frank McDermott,Dominique Weis.Chemical Geology . 2000 (1)

[9]

Organic acid fluorescence: applications to speleothem palaeoenvironmental reconstruction[J] . Siobhán F. McGarry,Andy Baker.Quaternary Science Reviews . 2000 (11)

[10]

Stable isotope record and its palaeoenvironmental interpretation for a late Middle Pleistocene speleothem from Victoria Fossil Cave, Naracoorte, South Australia[J] . J.M. Desmarchelier,A. Goede,L.K. Ayliffe,M.T. McCulloch,K. Moriarty.Quaternary Science Reviews . 2000 (8)

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