• 首页
  • 学报简介
  • 编委会
  • 投稿指南
  • 订阅指南
  • 过刊浏览
  • 在线投稿
  • 联系我们
  • 网络预出版
  • English

本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(0)   不支持(0)

晚第四纪柴达木盆地东部古湖泊高湖面光释光年代学
投稿时间:2010-08-28  修订日期:2010-09-25  点此下载全文
引用本文:樊启顺,赖忠平,刘向军,孙永娟,隆浩.2010.晚第四纪柴达木盆地东部古湖泊高湖面光释光年代学[J].地质学报,84(11):1652-1660.
FAN Qishun,LAI Zhongping,LIU Xiangjun,SUN Yongjuan,LONG Hao.2010.Luminescence Chronology of High Lake levels of Paleolakes in the Late Quaternary eastern Qaidam Basin[J].Acta Geologica Sinica,84(11):1652-1660.
DOI:
摘要点击次数: 1650
全文下载次数: 1631
作者单位E-mail
樊启顺 1 中国科学院盐湖资源与化学重点实验室中国科学院青海盐湖研究所西宁 8100082 中国科学院研究生院北京 100049 zplai@yahoo.com.cn 
赖忠平   
刘向军   
孙永娟   
隆浩   
基金项目:国家自然科学基金项目(编号 40872119、41002060)和中科院“百人计划”项目(编号 A0961)
中文摘要:高湖面是湖泊演化的鼎盛期,指示区域的温暖湿润气候。关于青藏高原湖泊高湖面的年代有不同的观点。一种观点(主要是基于14C测年)认为在氧同位素三阶段晚期青藏高原普遍存在“大湖期”或“泛湖期”,并且其温度和降水可能比全新世还高。另一种观点(主要基于释光、铀系测年等)认为青藏高原湖泊的最高古湖面出现在氧同位素五阶段,之后湖面逐渐下降。柴达木盆地位于青藏高原的东北部,其高湖面年代的研究可为认识青藏高原环境演化提供基础资料。本文选择柴达木盆地东部的托素湖和尕海湖高出现代湖面的湖相沉积和湖岸砂堤为研究对象,利用石英光释光测年方法建立其年代序列。根据沉积物沉积特征和光释光年代结果认为,尕海湖和托素湖古高湖面出现在82~73 ka、63~55 ka、34.4 ka和全新世早期。通过与青藏高原及周边湖泊高湖面年代记录对比,认为尕海湖和托素湖的最高湖面主体出现在氧同位素五阶段,之后湖面逐渐下降。
中文关键词:古高湖面  光释光年代学  柴达木盆地东部  晚第四纪
 
Luminescence Chronology of High Lake levels of Paleolakes in the Late Quaternary eastern Qaidam Basin
Author NameAffiliationE-mail
FAN Qishun 1 Key Laboratory of Salt Lake Resource and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008
2 Graduate University of Chinese Academy of Sciences, Beijing, 100049 
zplai@yahoo.com.cn 
LAI Zhongping   
LIU Xiangjun   
SUN Yongjuan   
LONG Hao   
Abstract:High lake levels of terminal lakes indicate warm and humid climatic conditions. Controversial views exist regarding the ages of high lake levels on the Qinghai Tibetan Plateau. One view (mainly based on 14C dating) proposes that the pan lake period (40~28 ka BP) or great lake period (40~25 ka BP) generally existed in the late part of the Marine Isotope Stage (MIS) 3, during which the temperatures and precipitation were probably much higher than those in the Holocene. However, another view (mainly based on Optically Stimulated Luminescence (OSL) and U series dating) argues that the highest lake level of paleolakes on the Qinghai Tibet Plateau occurred in MIS 5 and later lowered gradually. Gahai Lake and Toson Lake are located in the eastern Qaidam Basin, northeastern Qinghai Tibet Plateau. Here we report quartz OSL age estimates of highstand lacustrine sediments and beach deposits to establish the lake level history for the two lakes. The results imply that the high lake stands existed at 82~73 ka, 63~55 ka, 34.4 ka and early Holocene (11~9 ka), and that the highest lake level occurred in MIS 5 in the Late Quaternary.
keywords:high lake levels  OSL chronology  eastern Qaidam Basin  Late Quaternary
查看全文  查看/发表评论  下载PDF阅读器
您是第110302537位访问者  京ICP备05032737号-7  
版权所有:《地质学报》中文版
主管单位:中国科学技术协会 ; 主办单位:中国地质学会
地  址: 北京市西城区百万庄大街26号; 邮编:100037 ; 电话:010-68999025; E-mail: dizhixuebao@163.com
本系统由北京勤云科技发展有限公司设计 

京公网安备 11010202007916号

WeChat