Zengpiyan site is located at Guilin, Guangxi Province, with continuous deposits and abundant archaological remains, which are very important for the study of origin and development of pottery, prehistoric economics at the early Neolithic ages. Zengpiyan and many other Neolithic cave sites are situated in the limestone area with small hills and streams. The radiocarbon dates signed to those sites had been confused. One reason may be because of the “dead carbon” effect from the limestone. We collected plant remains, shells from different layers which divided into 5 archaeological cultural phases. The radiocarbon dating were did in three different labs. The modern terrestial and aquatic floral samples were also dated by radiocarbon decay method as comparison. The chronology of Zengpiyan site from radiocarbon dates were matched with the archaeological evidences. Further discussion about archeological issues were also made in the paper.
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