安徽无为盆地平衡地质剖面研究

本文对无为盆地一条代表性地震剖面进行了平衡剖面计算，从而建立了盆地基本构造模型及其演化模式。计算结果表明：剖面跨的仑头背斜实际上是一外多重推覆构造，是由志系地层形成的；志留系地层叠置造成地层缩短量灰７．９ｋｍ，地层缩短率为１７．３％；推覆构造形成的背斜在后期演化过程中经受的剥蚀量达２．５ｋｍ；盆地边界正断层造成的拉张量为５．４ｋｍ，盆地基底的沉一达３．４ｋｍ，所得结果与盆地周边边地质及深部构造所反

A STUDY ON THE BALANCED CROSS SECTION OF WU WEI BASIN, ANHUI PROVINCE

In this paper, based on the representative seismic profile 28, a balanced corss section of Wu Wei basin is made by computer. So the basic style of structure and its evolution model of wu Wei basin is established. The calculated results show that: the Lun tou anticline is a multi bend folding made up of superposed Silurian strata, the shortening of superposed Silurian system is 7.9km, the rate of shortening is 17.3%, the denudation of the fold in late evolutions reaches 2.5km. The tension distance by normal faults situated at the basin boundaries is 5.4km, the subsidence of the basin reaches 3.4km. The study in this paper is in accord with the geological data from neighbouring and deep structures.