Extent and chronology of Quaternary glaciation  

作　　者：Jurgen Ehlers Philip Gibbard 

机构地区：[1]Geologisches Landesamt, Billstrasse, 84. D-20539 Hamburg, Germany [2]Cambndge Quaternary, Department Of Geography, University of cambridge Downing Street Cambridge CB2 3EN, England.

出　　处：《Episodes》2008年第2期211-218,共8页地质幕（英文版）

摘　　要：In a recent INQUA project the extent of Pleistocene glaciations has been digitally mapped and the chronology of events reviewed. The onset of the present Ice Age in both hemispheres dates back to the Palaeogene. In Greenland, Iceland, North America and southernmost South America sizeable ice sheets formed well before 2.6 ka BP. In Alaska and on Tierra del Fuego the ice advanced further than in any later glaciations. Evidence for Early Pleistocene glaciation （2.6-0. 78 Ma） has been reported from many parts of the world, but in most cases dating remains problematic, and the size of the glaciers and ice sheets is unknown.

关 键 词：第四纪地质时代 冰川 范围 年代 

分 类 号：P5[天文地球—地质学]