摘要
本文对冀北坝上地区首次发现的冰川遗迹，冰缘现象进行了描述。并对中更新世以来的冰期、冰缘期进行了划分，分别命名为塔拉囫囵冰期、刘家营冰缘期，前者可与庐山冰期对比，后者相当于晚大理亚冰期。传统的观点认为晚更新世晚期，中国北方属干爆寒冷气候，但对本区冰缘现象的研究发现，此时期曾出现过湿冷阶段。在本区建立的新的岩石地层单位─塔拉囫囵组，位于赤城组之上马兰组之下，时代属中更新世晚期。
ccording to the description of the glader remains and periglacial appearances which we first found in the Bashang area, northwestern of Hebei province, this paper divides the glacial epoches or epiglacial epoches from middle pleistocene to present. They are named after Talahulun slacial epoch and Liujiaying epiglacial epoch. In the eyes of time, We contrast the former with Lushan glacial epoch,and the latter with late Dali glacial substage. It is considered that the climate in the China's north was arid and frigid during late pleistocene. But we think there had appeared humid and frigid dimate after researching the periglacial appearances in this area. The author has also established a new rockstratigraphic unit-Talahulun formation. The geologic time of the formation is later middlepleistocene.
关键词
冰期
冰缘期
塔拉囫囵组
更新世
glacial epoch,epiglacial epoch,Talahulun formation
