河南三门峡水沟—会兴沟旧石器遗址的黄土地层研究

发布时间：2018-06-06 01:12

本文选题：考古地层 + 黄土-古土壤序列　；参考：《地层学杂志》2017年02期

【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。
[Abstract]:Shuigou-Huexinggou site is a typical paleolithic site in Sanmenxia basin in the southeast of the Loess Plateau. Traditionally, the thick loess layer on the cultural layer of the site is regarded as "red soil", but the cultural layer belongs to the early Middle Pleistocene. On the basis of field investigation and stratigraphic division of Huexinggou section of the site, the magnetic susceptibility curve of the section is measured and compared with the soil stratigraphy and magnetic susceptibility curve of different loess sections. It is confirmed that the loess layer in the upper part of the site section includes S_0~S_8 's loess-paleosol sequence. The cultural layer of the site is located in the fluvial strata about 10 m below S8, so its age must be earlier than the track tuning age at the top of SSP 8, that is, 0.8 Ma. Because the cultural layer of the site appeared in the fluvial facies strata of the fourth terrace of the Yellow River, the fluvial facies formation was the product of fluvial sedimentation in the glacial environment during the formation of L9, and its track tuning age was 0.860.95 Ma. This age is the age of the formation of the cultural layer of the site.
【作者单位】：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;中国科学院大学;中国科学院古脊椎动物与古人类研究所;
【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
【分类号】：K878;P539

【相似文献】