江苏太湖第四纪沉积环境

Quaternary Sedimentary Environment of Taihu Lake

依据江苏太湖 2 2 3’钻孔岩心的古地磁极性和沉积相分析 ,结合对比本区其他钻孔岩心资料 ,简要概括了江苏太湖第四纪沉积环境。早更新世时期 ,太湖区域曾是山间洪积扇与碳酸盐湖的沉积环境。中更新世时期 ,太湖平原为河湖交替的沉积环境。晚更新世时期 ,太湖平原三次遭受海水入侵 ,以致河湖沉积环境曾三度变为潮坪沉积环境。全新世以来 。

Based on the analysis of paleomagnetic polarity and sedimentary facies from No.223 drilling core, inclusive of other drilling core date, the author summarizes briefly the Quaternary Sedimentary Environment of Taihu Lake. In Early Peistocene Epoch, Taihu Lake area was sedimentary environments of intermontane pluvial fan and carbonate lake; In Middle Pleistocene Epoch, Taihu Lake Plain was a fluviolacustrine alternative sedimentary environment. In Late Pleistocne Epoch, Taihu Lake Plain suffered marine invasion three times, making fluviolacustrine sedimentary environment become tidal flat sedimentary environment three times. Since Holocene, Taihu Lake area revealed today’s landscape. [WT5HZ]