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
良渚遗址群是距杭州市西北18 km的良渚镇和瓶窑镇毗邻地带间许多遗址的总称,代表了良渚文化发展的最高成就,是良渚文化的中心。根据在2007年发现的良渚古城墙外侧开挖的良渚北剖面、良渚西剖面沉积样品的粒度分析、孢粉分析数据,以及综...良渚遗址群是距杭州市西北18 km的良渚镇和瓶窑镇毗邻地带间许多遗址的总称,代表了良渚文化发展的最高成就,是良渚文化的中心。根据在2007年发现的良渚古城墙外侧开挖的良渚北剖面、良渚西剖面沉积样品的粒度分析、孢粉分析数据,以及综合区域内多个剖面地层对比,恢复了该地区全新世环境的演变过程。研究表明,全新世良渚遗址群内环境演变可以分为4个阶段：（1）7 ka BP以前的平原区多为静水沉积环境,水域范围较大,水位较高,且水深逐渐增加,不太适合人类活动;（2）7~5.1 ka BP区域水位有所下降,水域面积缩小,部分较高的地区露出水面,较少接受沉积,一些低洼地区接受了沼泽相或河流泛滥相沉积,一些人类活动遗址开始出现;（3）5.1~4.3 ka BP水位较低,文化快速发展,平原上多见良渚文化遗迹,一些遗址堆积了较厚的良渚文化层;（4）4.3 ka BP以后水位再次升高,良渚文化衰落,多数良渚文化层之上都覆盖一套黄色或黄褐色泛滥相沉积。该地区全新世时期的水位波动与人类文化兴衰演化历史相关的现象表明,良渚遗址区域内地貌特征及水文环境的变化是影响良渚文化兴衰演化的重要原因之一。展开更多
Shuidonggou site has abundant Paleolithic remains of Late Pleistocene deposition. Studying the evolution of depositional environments is essential to the comprehensive understanding of the living conditions of ancient...Shuidonggou site has abundant Paleolithic remains of Late Pleistocene deposition. Studying the evolution of depositional environments is essential to the comprehensive understanding of the living conditions of ancient populations. To reconstruct the depositional environment at Shuidonggou, we carried out archaeological excavations and collected systematic deposition samples at the key position of Shuidonggou Locality 2 for grain size analysis and sporopollen statistics. The environmental evolution around the Shuidonggou site generally underwent four stages at ~72-18 kaBP. During the first stage （~72-41 kaBP）, the river developed with gravel and sand stratums. During the second stage （41-34 kaBP）, a swamp with numerous aquatic plants formed. In the third stage （34-29 kaBP）, site formation was characterized by shallow lake depositional conditions; the climate was relatively warm and humid. The marginal bank depositional conditions deteriorated during the fourth stage （29-18 kaBP）, and the site underwent several dry events; the climate also became drier and colder.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
文摘良渚遗址群是距杭州市西北18 km的良渚镇和瓶窑镇毗邻地带间许多遗址的总称,代表了良渚文化发展的最高成就,是良渚文化的中心。根据在2007年发现的良渚古城墙外侧开挖的良渚北剖面、良渚西剖面沉积样品的粒度分析、孢粉分析数据,以及综合区域内多个剖面地层对比,恢复了该地区全新世环境的演变过程。研究表明,全新世良渚遗址群内环境演变可以分为4个阶段：（1）7 ka BP以前的平原区多为静水沉积环境,水域范围较大,水位较高,且水深逐渐增加,不太适合人类活动;（2）7~5.1 ka BP区域水位有所下降,水域面积缩小,部分较高的地区露出水面,较少接受沉积,一些低洼地区接受了沼泽相或河流泛滥相沉积,一些人类活动遗址开始出现;（3）5.1~4.3 ka BP水位较低,文化快速发展,平原上多见良渚文化遗迹,一些遗址堆积了较厚的良渚文化层;（4）4.3 ka BP以后水位再次升高,良渚文化衰落,多数良渚文化层之上都覆盖一套黄色或黄褐色泛滥相沉积。该地区全新世时期的水位波动与人类文化兴衰演化历史相关的现象表明,良渚遗址区域内地貌特征及水文环境的变化是影响良渚文化兴衰演化的重要原因之一。
基金supported by the National Natural Science Foundation of China (Grant No. 40902013)"Strategic Priority Research Program - Climate Change:Carbon Budget and Relevant Issues" of the ChineseAcademy of Sciences (Grant No.XDA05130202)
文摘Shuidonggou site has abundant Paleolithic remains of Late Pleistocene deposition. Studying the evolution of depositional environments is essential to the comprehensive understanding of the living conditions of ancient populations. To reconstruct the depositional environment at Shuidonggou, we carried out archaeological excavations and collected systematic deposition samples at the key position of Shuidonggou Locality 2 for grain size analysis and sporopollen statistics. The environmental evolution around the Shuidonggou site generally underwent four stages at ~72-18 kaBP. During the first stage （~72-41 kaBP）, the river developed with gravel and sand stratums. During the second stage （41-34 kaBP）, a swamp with numerous aquatic plants formed. In the third stage （34-29 kaBP）, site formation was characterized by shallow lake depositional conditions; the climate was relatively warm and humid. The marginal bank depositional conditions deteriorated during the fourth stage （29-18 kaBP）, and the site underwent several dry events; the climate also became drier and colder.
