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末次冰期向冰后期过渡阶段气候快速变化事件,尤其是“新仙女木”(Younger Dryas)事件,已成为过去全球变化研究的热点之一.这里简要报道对北京房山长沟镇东甘池(39°32＇N,115°47＇E)古湖沼沉积物剖面气候环境变化代替性指标的研究结果. 房山长沟镇西北坟庄、东甘池一带位于太行山北段山前残丘和洪积扇间洼地.以往研究表明,这一带具有埋藏约4 m厚的淤泥、泥炭等古湖沼沉积物.1992年秋我们在东甘池开挖了8.6m深探槽,揭露的沉积物层序、岩性及结构都与坟庄钻孔及坟庄北探槽的十分相似,自上而下为:
Rapid climatic changes in the transitional phase from the last ice age to the late ice period, especially the Younger Dryas incident, have become one of the hot spots in the past global change research. A brief report on climate change in Dongganchi, Changgou, Fangshan, Beijing (39 ° 32’N, 115 ° 47’E) Research results of alternative index of climatic and environmental changes in the sediment profile of ancient lakes: Fangzhang Changgou town northwest grave village and Dongganchi area are located in the piedmont hills and the alluvial fan between the northern part of the Taihang Mountains Previous studies have shown that there is an ancient paleo-lacustrine deposit of about 4 m in depth buried in the area.In the autumn of 1992, we excavated a 8.6-meter deep exploration tank in Dongganchi, exposing sedimentary sequences, lithologies and structures And Zhuang Zhuang Zhuang Zhuang drilling holes and very similar to the probe from top to bottom: