| EVOLUTIONARY CHARACTERISTICS OF LAKES AND PALAEOCLIMATIC UNDULATION IN THE Q AID AM BASIN,CHINA |
| |
| 作者姓名： | 黄麒 Teh-Lung Ku Fred M.Phillips |
| |
| 作者单位： | Institute of Salt Lakes，Academia Sinica，Xining 810008，Department of Geological Sciences，University of Southern California，Los Angeles，CA. 90089-0740，U.S.A.，Geoscience Department，New Mexico Institute of Mining and Technology，Socorro，NM 87801 U.S.A |
| |
| 摘 要： | The Qaidam Basin is. a tectonically controlled depression at 2700 m altitude on the northern margin of the Tibet Plateau. A succession of Neogene clastic sediments indicates lake depocentre migration from NW to SE. Towards late Pliocene, evaporative conditions developed with formation of gypsum, halite, celestite, mirabilite and bloedite. Continued deformation through Pleistocene developed a series of NW- SE trending domes and troughs. This setting continued to exert a controlling influence on basin and brine evolution and the progressive development of sulfate to chloride brines as, dry conditions intensified in late Pleistocene, at the end of which, extensive flat floors were formed in Dalangtan, Qarhan and other playas.The, model, which was set up based on the synthetic analyses, divides the fluctuating palaeoclimate since 750ka,B. P. into 11 warm and humid stages and 10 dry and cold stages. The water of the lakes evaporated during the dry-cold periods and were freshened during the warm-humid periods
|
| 收稿时间： | 17 May 1992 |
Evolutionary characteristics of lakes and palaeoclimatic undulation in the Qaidam Basin,China |
| |
| Huang Qi,Teh-Lung Ku,Fred M. Phillips.EVOLUTIONARY CHARACTERISTICS OF LAKES AND PALAEOCLIMATIC UNDULATION IN THE Q AID AM BASIN,CHINA[J].Chinese Journal of Oceanology and Limnology,1993,11(1):34-45. |
| |
| Authors: | Huang Qi Teh-Lung Ku Fred M Phillips |
| |
| Institution: | (1) Institute of Salt Lakes, Academia Sinica, 810008 Xining;(2) Department of Geological Sciences, University of Southern California, 90089-0740 Los Angeles, CA, U.S.A.;(3) Geoscience Department, New Mexico Institute of Mining and Technology, 87801 Socorro, NM, U.S.A. |
| |
| Abstract: | The Qaidam Basin is. a tectonically controlled depression at 2700 m altitude on the northern margin of the Tibet Plateau. A succession of Neogene clastic sediments indicates lake depocentre migration from NW to SE. Towards late Pliocene, evaporative conditions developed with formation of gypsum, halite, celestite, mirabilite and bloedite. Continued deformation through Pleistocene developed a series of NW- SE trending domes and troughs. This setting continued to exert a controlling influence on basin and brine evolution and the progressive development of sulfate to chloride brines as, dry conditions intensified in late Pleistocene, at the end of which, extensive flat floors were formed in Dalangtan, Qarhan and other playas.The, model, which was set up based on the synthetic analyses, divides the fluctuating palaeoclimate since 750ka,B. P. into 11 warm and humid stages and 10 dry and cold stages. The water of the lakes evaporated during the dry-cold periods and were freshened during the warm-humid periods. |
| |
| Keywords: | evolution of salt lakes organic carbon stratigraphy undulating model of paleoclimate |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
|
