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鄂东南处于扬子地层区下扬子地层分区与江南地层分区交界处,南华系发育齐全,莲沱组由砾岩、砂岩、凝灰岩组成,岩性组合与扬子陆块内部可以很好的进行对比,而其与下伏地层假整合接触,与东南缘盆地相同;鄂东南的古城组、大塘坡组、南沱组表现出兼具扬子陆块内部及东南缘盆地的沉积特征;在接触关系上,各组间为整合接触,与东南缘盆地沉积特征相同。扬子陆块内部与东南缘盆地南华系对比仍存在分歧,鄂东南处于扬子陆块内部与东南缘盆地的过渡地带,为不同相区南华系对比建立了很好的桥梁。通过进一步工作,有望确定莲沱组、古城组等关键层位的对比等问题。
Southeast of Hubei Province is located in the lower strata of Yangtze stratigraphy and the junction of Jiangnan stratigraphic subdivision. The South China Stratigraphy is fully developed. The Lituo Formation is composed of conglomerate, sandstone and tuff, and the lithologic assemblage can be well compared with the interior of Yangtze block It is in contact with the underlying strata and is the same as the basin in the southeast margin. The Gucheng Formation, Datangpo Formation and Nantuo Formation in Southeast southeastern Hubei Province show sedimentary characteristics both within the Yangtze block and in the southeastern margin of the basin. In the contact relationship, Integration between the various groups contact, and the same characteristics of the sedimentary basin in the southeast margin. There is still a disagreement between the South China System within the Yangtze block and the southeastern margin basin. The southeastern part of Hubei is in the transitional zone between the interior of the Yangtze block and the southeast margin basin, establishing a good bridge for contrasting the Nanhua system in different facies. Through further work, it is expected to determine such issues as the comparative study of the key strata such as the Liantuo Formation and the Gucheng Formation.