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.
出处
《中国地质》
CAS
CSCD
北大核心
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
