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地球学报  2000 

桂林44kaB.P.石笋同位素记录及其环境解译

Keywords: 洞穴石笋,同位素,古环境,桂林

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Abstract:

通过大气降水多种因素的相关性,以及平均温差较大的2个时段生长的石笋C、O同位素的明显差异性,论证了本区石笋碳酸盐的C、O同位素与全球气温变化呈明显的负相关。Pl1和X1石笋高分辨率的同位素记录取得了完全一致的结果,C、O同位素确定了冰期旋回冰消期的终止点“I”,其时限为10.7kaB.P.。自44kaB.P.以来桂林地区的气候变化可划分为3个阶段:44~25.6kaB.P.的冰期,寒冷,但比盛冰期暖和;25.6~10.7kaB.P.的盛冰期,气

References

[1]  Shackleton N J;Opdyke N D,Oxygen isotope and paleomegnetic stratigraphy of equatorial Pacific core V28-238:oxygen isotope temperatures and ice volumes on a 105 year and a 106 scale,Quaternary Research,1973(03).
[2]  Merwe N J Van der,Carbon isotopes and archaeology,South African Journal of Science,1982(78).
[3]  鹿世瑾,华南气候,北京:气象出版社,1990.
[4]  Winograd I J;Coplen T B;Landwehr J M;Riggs A C,Ludwig K R,Szabo B J,Kolesar P T,Revesz K M,Continuous 500,000-years climate record form vein calcite in Devils Hole,Nevada,Science,1992(258).
[5]  Lorius C,A 150 000-year climatic record from Antarctic ice,Nature,1985(316).
[6]  Dansgaard E,Stable isotopes in precipitation,Tellus,1964(16).
[7]  张素琴;李松勤,夏季风在中国降水对全球增暧的响应的作用,北京:气象出版社,1996.
[8]  覃嘉铭,古气候变化的石笋同位素记录研究,地球学报,1997(03).
[9]  Schwarcz H P,Geochronology and isotopic geochemistry of speleothems,Elsevier science publishers B.V,1986.
[10]  O Neil J R;Clayton R N;Mayeda T K,Oxygen isotope fractionation in divalent metal carbonates,Journal of Chemical Physics,1969(51).
[11]  王东升,中国大气降水氢氧同位素场的时间-空间展布及其环境效应,天津:天津大学出版社,1993.
[12]  Linsley B K Oxygen-isotope record of sea level and climate variations in the Sulu Sea over the past 150 000 years [J] 1996(380)
[13]  Barnola J M;Raynaud D;Korotkevich Y S;Lorius C,Vostok ice core provides 160 000 year record of atmospheric CO2,Nature,1987(329).

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