辽宁本溪庙后山遗址铀系测年初步结果  

Results of Uranium-series Dating on Houshan Site, Benxi, Liaoning Province

作　　者：张丽[1] 沈冠军[1] 傅仁义[2] 赵建新 

机构地区：[1]南京师范大学地理科学学院,江苏南京210046 [2]辽宁省文物考古研究所,辽宁沈阳110003 [3]Radiogenic Isotope Laboratory Centre for Microscopy and Microanalysis,University of Queensland,Brisbane,QLD 4072,Australia

出　　处：《东南文化》2007年第3期54-57,共4页Southeast Culture

基　　金：国家自然科学基金(40373031);Wenner-Gren Foundation(Gr.6975)资助项目

摘　　要：庙后山是位于我国东北的重要中更新世人类遗址。报道该地点出土人类化石的第5、6堆积层次生碳酸盐岩和骨化石样的铀系测年结果。夹生于第6堆积层3个钙板的年龄分别为276、>535、346ka,其下第5层中的钙板为526±31ka,据此第6层顶部应至少为200ka,第5层中部应大于500ka。结果远大于该地点原基于骨化石铀系测年的年代框架,支持中国直立人和早期智人交替比原认为约200ka早得多的观点。The Miaohoushan site, with the recovery of three hominid fossils, 76 stone artifacts and a faunal assemblage of 72 mammalian species, is known for marking the northernmost human presence in Middle Pleistocene China. This paper presents^230Th/^234U dates on four calcite and two fossil samples from the hominid fossil-hearing 5^th and 6^th depositional layers of the site. The flowstone intercalated in 5^th layer yields an age of 526 ± 30 ka, while three speleothem horizons of the 6^th layer give ages of 276 -38^＋60, 〉535 and 346-60^160 ka respectively. Based on these results we propose that the topmost section of the 6^th layer should be no less than 200 ka, and the middle part of the 5^th layer older than 500 ks. The results here presented, much older than the previous temporal frame based on the U-series dates on fossil hones, are in support of the proposition for a much earlier Homo erectus-archaic Homo sapiens interface in China.

关 键 词：庙后山遗址 次生碳酸盐岩 铀系年代 直立人 早期智人 

分 类 号：K878[历史地理—考古学及博物馆学]