广西灌阳县响水洞石笋的同位素年龄及古气候意义  

AGES AND PALEOCLIMATIC MEANINGS OF A STALAGMITE FROM XIANGSHUI CAVE AT GUANYANG COUNTY, GUILIN

作　　者：张美良[1] 袁道先[1] 林玉石[1] 覃嘉铭[1] 李彬[1] 

机构地区：[1]国土资源部岩溶地质研究所

出　　处：《中国岩溶》1998年第4期311-318,共8页Carsologica Sinica

基　　金："九五"国家自然科学基金

摘　　要：通过对灌阳县响水洞１号石笋进行α能谱铀系测年和碳氧同位素分析，获得了距今４４．０～３．１ｋａ高分辨率古气候演变信息。它反映４４．０ｋａ以来区内经历了严寒（晚大理冰期）、冰期后干冷和温热（间夹短暂的冷期）等气候变化。Paleoclimatic informations with high resolution from 44ka B.P. to 3.1ka B.P. have been obtained through U series dating and carbon and oxygen isotopic analysis to No.1 stalagmite from Xiangshui cave at Guanyan county. The results show the records of climate change since 44ka B.P. in the area, i.e. from the cold one (the late Dali glacial period) to post glacial dry cold one (around the Younger Dryas Event), and then to a warm and humid period including several colder stages.

关 键 词：石笋 铀系年龄 古气候 灌阳响水洞 

分 类 号：P597[天文地球—地球化学] P532[天文地球—地质学]