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The Tianluoshan and Huxi sites are located in Zhejiang province, southeastern China.

Finally, the graphite is measured by the accelerator mass spectrometer.Fourteen samples were collected from six archaeological sites.Soil and charcoals or seeds were simultaneously selected at the same depth from the pits and cultural layers.We present an improved method for extracting phytoliths from soils.We compared the dating of phytoliths and other materials (e.g., charcoal and plant seeds) recovered at the same depth from seven pits at six archaeological sites in China.

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