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
基金国家重点基础研究发展规划(973)(the National Grand Fundamental Research973Program of China under Grant No.2006CB701401)国家"十五"科技公关计划项目(the Key Technologies R&D Program o"fTenth Five-Year-Plan"China under Grant No.2004BA810B05)现代古生物学和地层学国家重点实验室资助项目(063110)联合资助。
