摘要
东大别山自北向南由北淮阳构造带、大别构造带、张八岭构造带和扬子克拉通北缘构造带组成,四周被北西西向和北东向断裂切割、围限,表现为典型的断块构造。东大别山夷平面由高到低可以分为四级:山顶面与齐一山顶面、山麓面与联合山麓面、剥蚀面、准平原与刻蚀平原,分别称之为"天堂寨面"、"大别面"、"淮南面"和"江淮面",相应的地貌循环期分别为"天堂寨地文期"、"大别地文期"、"淮南地文期"和"江淮地文期"。各级夷平面均受到不同程度的改造和变形,包括垂直错落、水平位移、平缓褶曲或断裂等,这与北西西向和北东向断裂自晚白垩世以来各地文期的活动密切相关。
The Eastern Dabie Mountain area is a typical fault-block structure, for it is cut by NWW and NE trending faults and consists of four tectonic belts, i.e. North Huaiyang Belt, Dabie Belt, Zhangbaling Belt and Northern Yangtze Craton Tectonic Belt. It can be divided into four levels of planation surfaces from higher to lower： the Top Surface or the Unifying Top Surface, the Piedmont Surface or Joint Piedmont Surface, the Erosion Surface, and the Peneplain to Etching Plains, named as Tiantangzhai Surface, Dabie Surface, Huainan Surface and Jiang- huai Surface respectively. The corresponding geomorphologic cycles are called as Tiantangzhai Physiographic Stage, Dabie Physiographic Stage, Huainan Physiographic Stage and Jianghuai Physiographic Stage. All these planation surfaces are transformed or deformed by vertical and horizontal displacement, gently fold or faulted at different de- grees since the formation, which closely related to the activities of NWW and NE trending faults since the late creta- ceous.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第6期62-67,共6页
Journal of Geodesy and Geodynamics
基金
中国地质调查局基础专项(1212011120097)
关键词
东大别山
夷平面
山顶面
山麓面
地文期
Eastern Dabie Mountains
planation surface
top surface
piedmont surface
physiographic stage
