河南渑池仰韶人遗址区黄土冲沟阶地的释光测年研究

地貌变迁与古人类活动的关系一直是地理学研究的一个重要科学问题。仰韶文化是黄河流域最为重要的新石器人类文明之一，文章以河南渑池仰韶遗址区内西沟冲沟为研究对象，尝试建立仰韶人类活动与遗址区内冲沟地貌形成的先后关系。渑池仰韶遗址区地处黄土高原东南缘黄土堆积区，文章利用释光测年方法测定了西沟冲沟阶地上覆堆积黄土的年代，粗略重建了阶地形成的时间为大约距今3万年和12万年前，分别对应深海氧同位素（MIS） 3阶段和5阶段。而该时期渑池仰韶区域尚无古人类活动记录，所以释光测年结果证明仰韶遗址区内的冲沟完全是自然成因的，与遗址区仰韶人的地表活动无关。

Luminescence Dating of Loess Gully Terraces in the Yangshao Man Site at Mianchi County,Henan Province

The relationship between geomorphological evolution and human activities is an important issue in geography research. TheYangshao site in Mianchi County, Henan Provence, is one of the most significant Neolithic pottery cultures in the Yellow River Basin.This study takes Xigou Gully in the Yangshao site in Mianchi County as a research object, and try to establish the relationship betweenhuman activity and landform formation. The Yangshao Site is located in the southeastern boundary of Loess Plateau. This plateau is aloess accumulation area, and loess is an ideal material for optically stimulated luminescence (OSL) dating. In this study, we used quartzOSL dating and K-feldspar post-infrared(IR) IRSL to obtain the age of overlaying loess in the Xigou Gully terraces and attempt toreconstruct the formation time of the terraces. The formation of the terraces in Xigou Gully has been estimated at approximately 30 kaand 120 ka, corresponding to the marine isotope stage (MIS) 3 and 5. However, given the absence of a record of human activity in theYangshao Site during this period, our dating results prove that the formation of gullies in the site has no relationship with the surfaceactivities of the Yangshao people during the Neolithic Age.