东南极内陆格罗夫山地区新生代冰川活动和古气候演化记录  

EVIDENCE FOR EAST ANTARCTIC ICE SHEET DEVELO-PMENT AND PALAEOCLIMATIC EVOLUTION FROM THE GROVE MOUNTAINS,EAST ANTARCTICA

作　　者：方爱民[1] 刘小汉[2] 黄费新[2] 

机构地区：[1]中国科学院地质与地球物理研究所青藏高原研究室,北京100029 [2]中国科学院青藏高原研究所,北京100029

出　　处：《极地研究》2007年第1期61-68,共8页Chinese Journal of Polar Research

基　　金：国家自然科学基金重点项目(NSFC40631004);国家自然科学基金面上项目(40202034);国家海洋局极地考察办公室2004-2005年度专项野外考察经费资助项目

摘　　要：地处东南极内陆的格罗夫山地区是研究南极冰川进退和气候演化的理想场所。我国第22次南极考察(2005/2006)进行了该地区冰盖进退和古气候演化专题研究。笔者在野外考察过程中,对格罗夫山地区新生代冰川活动记录(包括冰川侵蚀地貌及冰川堆积物)进行了详细的观测,获得了很多有关该地区冰盖进退及古气候演化方面的第一手材料,同时系统回收了对反映该地区古冰川活动具有重要意义的新生代沉积岩漂砾。本文简要报道本次野外考察在冰盖进退和古气候演化方面所取得的主要成果。The Grove Mountains, located about 450 km inland from the coast of the Prydz Bay in the Lambert-Amery glacial system, is an ideal place to carry out studies on the Antarctic ice-sheet development and palaeo-elimatie evolution in Antarctica. Financially and logistically supported by Chinese Oceanic Administration and Chinese Polar Research Center, the 22nd Chinese National Antarctic Research Expedition （CHINARE） team made a special investigation on the evidence for climatic and ice-sheet evolution in this region. During the field survey of the 2005- 2006 Chinese National Antarctic Research Expedition （CHINARE） , different kinds of Cenozoic sedimentary records were found in the Grove Mountains, including （ 1 ） different types of glacial moraines left by pre-existed glaciers developed in this region at different stages; （2） large quantity of glaeiogenie sedimentary erraties found in the moraine banks in the center area of Grove Mountains; （3） different scales of glacier erosion landforms, esp. , the glacial stria, formed by pre-glaeier movements at different stages; and （4） extraneous ice boulders and palaesols found in different places near the center of this region. All these record a complex climatic evolution history in this region accompanied by a fairly dynamic ice-sheet evolutionary process.

关 键 词：东南极 格罗夫山地区 冰川活动 古气候 

分 类 号：P532[天文地球—古生物学与地层学]