The excavation of Jinsha Site is very important to study Shu civilization.Based on the grain size characteristics and six AMS 14C data,three phrases of paleoenvironmental and paleoclimatic changes can be proposed sinc...The excavation of Jinsha Site is very important to study Shu civilization.Based on the grain size characteristics and six AMS 14C data,three phrases of paleoenvironmental and paleoclimatic changes can be proposed since 4 ka B.P.in this area.PhraseⅠ: 4200-3800 a B.P.,fluviatile deposit altemated with swamping deposit,climate is damper and warmer; PhraseⅡ:3800-3400 a B.P.,flood plain and bank sand deposit,the precipitation increased;PhraseⅢ: 3400 a B.P.,multi-cycle of paleosol展开更多
文摘The excavation of Jinsha Site is very important to study Shu civilization.Based on the grain size characteristics and six AMS 14C data,three phrases of paleoenvironmental and paleoclimatic changes can be proposed since 4 ka B.P.in this area.PhraseⅠ: 4200-3800 a B.P.,fluviatile deposit altemated with swamping deposit,climate is damper and warmer; PhraseⅡ:3800-3400 a B.P.,flood plain and bank sand deposit,the precipitation increased;PhraseⅢ: 3400 a B.P.,multi-cycle of paleosol
基金Project(2019YFC1803601)supported by the National Key Research and Development Program of ChinaProject(2022)supported by the Complementary Fund from the Guizhou Provincial Department of Science and Technology,China。