摘要
结合多年野外实际观察和吴忱关于地文期的最新研究成果,论证了在北台期夷平面之下尚有一级晚于北台期的夷平面存在,它的形成时代为渐新世。北台期则在中—晚白垩世。指出了确定夷平面和夷平面时代的依据,不能像Wilis(1907)那样,只根据地形面切削了燕山期的地质构造确定。必须根据形态、沉积、旋回、层位和岩溶等综合证据,进行区划分析。最后,讨论了这两级古夷平面在地震地貌研究中的作用。
Combining the field observation for many years with the new research achievement of the physiographic stage by Wu Cheng,it is demonstrated that there was a planation surface later than the Beitai stage under the planation surface of Beitai stage,its forming chorn was Oligocene Epoch,and Beitai stage was middle to late Cretaceous period.It is suggested that the basis defining the planation surface and its chorn must be the comprehensive evidences of the shape,the depositional cycle,the position and the karst,but not only based on Yenshan structure cut by the topographic surface like willis(1907).Finally,discusses the effect of both the palaeoplanaiton surfaces in the seismic morphological analysis.
引文
1张相文地文学中国地学会出版上海:上海文明书局,19132~52WilisB.PhysiographyofNorthwesternChina,ResearchinChina.CarnegieInst.Washington,Public.1907203~2643李容全,刘增森北京地区长辛店砾石层的沉积学特征与西山地貌发育的几个问题地理学报,1984,39(1):86~964崔之久,高全洲,刘耕年等夷平面、古岩溶与青藏高原隆起中国科学(D辑),1996,26(4):378~3855周廷儒,李华章,刘清泗等泥河湾盆地新生代古地理研究北京:科学出版社,1991131~1336刘锡清,夏正楷关于泥河湾层划分对比的意见海洋地质与第四纪地质,1983,3(1):75~867StrahlerAN,StrahlerAH.现代自然地理学(1978)《现代自然地理学》翻译组译北京:科学出版社,1983344~3458朱景湖,崔之久五台山冰缘地貌的基本特征冰川冻土,1984,6(1):71~729齐矗华陕西秦岭构造地貌基本特征见:中国地理学会地貌专业委员会编中国地理学会第一次构造地貌学术讨论会论文集北京:科学出版社,1984145~15010黄海军嵩山地区夷平面研究与模糊分级统计方法的应用河南大学学报(自然科学版),1990(1):75~8011史学建桐柏山地区地形面分析与模糊数学方法应用河南大学学报(自然科学版),1990(1):69~73