| 桂林水南洞1号石笋的年龄与稳定同位素测定及其古气候意义 |
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| 引用本文： | 张美良,林玉石,覃嘉铭,李彬.桂林水南洞1号石笋的年龄与稳定同位素测定及其古气候意义[J].地球与环境,2000,28(1):41-47. |
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| 作者姓名： | 张美良 林玉石 覃嘉铭 李彬 |
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| 作者单位： | 国土资源部岩溶地质研究所,岩溶动力学开放研究实验室,广西桂林,541004 |
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| 基金项目： | 中国科学院资助项目,国土资源部科研项目,IGCP379项目,49632100,9501104,49632100,,, |
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| 摘 要： | 本文通过对桂林水南洞 1号石笋进行α能谱铀系测年及碳氧同位素分析 ,获得了距今 2 0～ 8万年的古气候信息。石笋大于 2 0万年前开始生长 ,8.0 7万年后停止生长 ,属中更新世的产物。其年龄与δ1 8O的变化可与深海岩芯V2 8-2 3 8同位素记录所揭示的第五和第六阶段进行对比。它反映此阶段区内经历了寒冷 (间夹短暂的小温期 )和温暖 (间夹短暂的小冷期 )等气候变化 ,与全球古气候变化波动基本一致 ,同时也存在地区性的气候变化
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| 关 键 词： | 石笋 铀系年龄 稳定同位素 古气候 桂林水南洞 |
AGES AND STABLE ISOTOPIC MEASUREMENTS OF NO.1 STALAGMITE FROM SHUINAN CAVE IN GUILIN AND THEIR PALAEOCLIMATIC IMPLICATIONS |
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| Zhang Meiliang,Lin Yushi,Qin Jiaming,Li Bin.AGES AND STABLE ISOTOPIC MEASUREMENTS OF NO.1 STALAGMITE FROM SHUINAN CAVE IN GUILIN AND THEIR PALAEOCLIMATIC IMPLICATIONS[J].Earth and Environment,2000,28(1):41-47. |
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| Authors: | Zhang Meiliang Lin Yushi Qin Jiaming Li Bin |
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| Institution: | Zhang Meiliang
Lin Yushi Qin Jiaming Li Bin
(Institute of Karst Geology, CAGS, Guilin 541004) |
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| Abstract: | Stalagmites in karst caves are a better
carrier of karst environmental record, and the sophisticated approaches are available for
dating and testing of environmental indexes for pure carbonate rocks. The reconstruction
of paleoenvironment by using the information on stalagmites in karst caves is one of the
popular projects in recent 20 years. |
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| Keywords: | stalagmite U\|series age paleoclimate stable isotope Shuinan cave Guilin |
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