野外调查表明,喜马拉雅山脉东段的空布岗峰东麓晚第四纪期间至少发育了4套冰碛物.初步的U系和热释光(TL)测年结果表明,该区最早的冰川作用出现在MIS6(深海氧同位素阶段)之前,并可能是该区规模最大的一次冰川作用过程.最近一次显著的冰川作用出现在倒数第二次冰期,其时代约为160.9~109.0 ka BP或略早,大致对应MIS6,其中至少包含了两个阶段.最近的两次冰川作用分别发生于末次冰期和全新世期间,其中包含了多个次一级的冰川波动.
【英文摘要】
Glacial successions on the eastern piedmont of Kongbugang Peak in the eastern Himalayas,located in the northwestern Cona county of Tibet and adjacent to north-trending Cona-Nariyong Co graben to east,are reassessed and preliminary glacial chronologies are presented for the region.Based on field investigation to the associated glacial landforms and detailed analysis on remote images,the glacial landforms are divided into four sets of tillscorresponding with so-called Nyanyxungla Ice Age,Jilongshi Ice Age,Ron...