Stone Tools Unearthed In Gansu-qinghai Region Prehistoric Burial Preliminary Analysis

The stone tools play an important part in the burial objects of the Neolithic Age, and the burial stone tools are an active factor in the prehistoric grave in Chinese Gansu and Qinghai area. The researches on the changes of the burial stone tools will deepen our knowledge on the social existence reflected by the burial custom, and until now there are few researches on the burial stone tools in the entire Chinese Gansu and Qinghai area on a prehistoric scale.This paper tries to visually reveal the change characteristics of stone tools through data by starting from such aspects as type combination, quantitative proportion and shape characteristics of the burial stone tools. The paper also attempts to show the burial customs of different regions in different periods of archaeological culture through the use of the way of dividing the distribution circle in the map. By the discovery of the entire process of the occurrence, the rapid growth and the decline of the burial stone tools in the region, it is preliminarily determined that this burial custom is created in such two graves as Ledu and Minhe during the Banshan and Machang period, and the center of this burial custom is thus created here with the burial custom's influence spread to the area around it. A relatively large distribution circle of burial stone tools is formed and the regional style of burial microlith is also formed along Hexi corridor. After entering the period of Qijia archaeological culture, this burial custom is impacted by other burial customs and the scope of distribution of this burial custom is greatly reduced. The situation of one region's keeping of the tradition of burial stone tools is different form that of another's. After entering the period of various kinds of bronze culture, the tradition of burial stone tools in this region gradually fades out of the sight of archeology. But in some places, this tradition is still kept or rejuvenated.There are many reasons contributing to the above-described changes, and they include not only the conquest and the fusion brought about by the foreign ethnic groups but also the internal adjustment carried out by the ethnic group itself.