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地体是指以深大断裂为边界的,具有区域规模的地质实体,以不同于毗邻地体的地质发展史为特征。地体之间地质面貌截然不同,不存在任何过渡岩相带。这一理论成功地解释了滨太平洋地区的一些地质现象。笔者依据在大别山地区多年工作所积累的资料,认为这一地区实际上是一个地体拼合区,在地史时期发生过复杂的地体运动。依据区域沉积特征、古生物面貌,构造特征、岩浆活动、变质作用和其它特征的不同,可以判定本区存在着三个独立地体:大别地体、随应地体和北淮阳地体。它们以深大断裂为界,拼贴于华北地体,扬子地体和皖东地体之间。
The terrain is a geological entity with regional scale bordered by deep faults and characterized by geological development history different from adjacent terrain. Geological differences between the terrain, there is no transitional facies belt. This theory has successfully explained some of the geological phenomena in the Pacific Rim. Based on the information accumulated over the years in the Dabieshan Mountains, the author thinks that this area is actually an area of land consolidation and complex earth movement occurred during the period of geography. According to the regional sedimentary characteristics, paleontology, tectonic features, magmatism, metamorphism and other characteristics, it can be concluded that there are three independent sites in this area: Dabie Earth, Habitat and North Huaiyang Earth. They are deep faults as the boundary, collage in the North China, Yangtze and East Anhui terrane.