黄联关组形成时代的光释光测年初步研究  

A preliminary study of the formation age of Huanglianguan Formation based on OSL dating

作　　者：张克旗[1] 姚海涛[1] 乔彦松[1] 刘萪[1] 

机构地区：[1]中国地质科学院地质力学研究所,北京100081

出　　处：《中国地质》2012年第3期645-650,共6页Geology in China

基　　金：中国地质科学院地质力学研究所基本科研业务费项目(DZLXJK201109和DZLXJK200806);中国地质调查局地质大查调项目(1212010914041)资助

摘　　要：前人认为黄联关组形成于晚更新世晚期,由冲积物堆积而成。本文对采自四川省西昌市黄联关镇处的黄联关组上部黄色亚砂土层的7个样品进行光释光(OSL)测年,剔除一个可靠性差的结果,其余6个样品的OSL年龄分布在(143.3±21.4)ka^(87.4±8.7)ka,显示黄联关组至少是于晚更新世(Q3)早期,末次间冰期间,气候较湿热环境下形成的。It was previously thought that the Huanglianguan Formation was formed in the late period of late Pleistocene and was composed of alluvial deposits. Seven samples from Huanglianguan Formation were dated using the OSL dating method. One of the results was abandoned because of its poor reliability. The OSL ages of the samples are from （143.3±21.4）ka to （87.4±8.7）ka. The results obtained indicate that the Huanglianguan Formation was formed at least in the early Late Pleistocene period in a warm and wet climate environment of the last interglacial period.

关 键 词：黄联关组 形成时代 OSL测年 简单多测片法 

分 类 号：P533[天文地球—古生物学与地层学]