河南三门峡水沟—会兴沟旧石器遗址的黄土地层研究  

LOESS STRATIGRAPHY OF THE SHUIGOU-HUIXINGGOU PALEOLITHIC SITE IN SANMENXIA,HENAN PROVINCE

作　　者：李兴文[1,2] 林杉[1,2] 敖红[1] 黄慰文[3] 侯亚梅[3] 安芷生[1] 

机构地区：[1]中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,陕西西安710061 [2]中国科学院大学,北京100049 [3]中国科学院古脊椎动物与古人类研究所,北京100044

出　　处：《地层学杂志》2017年第2期166-172,共7页Journal of Stratigraphy

基　　金：中国科学院地球环境研究所黄土与第四纪地质国家重点实验室开放基金课题(批准号:SKLLQG 1501和1502);国家自然科学基金(No.41174057和41290253)资助

摘　　要：水沟—会兴沟遗址是黄土高原东南部三门峡盆地的一个代表性旧石器遗址,传统上将遗址文化层上覆较厚的黄土层看作是"红色土",而认为文化层属于中更新世早期。在对遗址的会兴沟剖面进行野外考察和地层划分基础上,通过对剖面磁化率曲线的测量及与不同黄土剖面土壤地层和磁化率曲线的对比,证实遗址剖面上部的黄土地层包括了S_0~S_8的黄土-古土壤序列。遗址文化层位于S8以下约10m处的河流相地层中,因此其年代必定早于S_8顶部的轨道调谐年龄,即0.8Ma。因为遗址文化层出现在黄河第四级阶地的河流相地层中,而河流相地层是在L9形成时的冰期环境下河流沉积作用的产物,其轨道调谐年龄为0.86~0.95Ma。据此推断该年龄即是遗址文化层的形成年代。The Shuigou-Huixinggou Paleolithic Site is a representative site in the Sanmenxia Basin in the southeastern of Loess Plateau. The upper loess strata at this site were traditionally regarded as red loam and considered to be early Middle Pleistocene in age. In this study, we carried out field survey and strati- graphic analysis of the Huixinggou Profile at the Shuigou-Huixinggou Paleolithic site. Based on magnetic susceptibility analysis and correlations with other loess profiles, we demonstrate that the upper loess strata at the Shuigou-Huixinggou Paleolithic site consists of a continuous loess-paleosol sequence which ranges from So to S8. According to the chronological framework for loess-paleosol sequences established by orbital tuning, the age of the top of S8 is 0.8 Ma, Thus, the site which is 10 m below S8 is definitely older than 0.8 Ma. Because the site cultural layer appears in fluvial sediments of the fourth terrace of the Yellow Riv- er, and because the deposition of the fourth terrace sediments would occur during the glacial period when loess L9 was accumulated, the age of the site cultural layer is inferred to be 0.86-0.95 Ma, which is equiv- alent to the orbital tuning age of loess Lg.

关 键 词：考古地层 黄土-古土壤序列 磁化率 黄土高原 第四纪 水沟-会兴沟旧石器遗址 三门峡 河南省 

分 类 号：P539[天文地球—古生物学与地层学] P534.63[天文地球—地质学]