摘要
河南西峡盆地是燕山运动走滑拉张、伸展形成的断裂盆地,基于其地层分布、沉积建造特征,研究了西峡盆地沉积岩相、沉积体系特征。西峡盆地巨厚的红色类磨拉石沉积建造总体为正粒序结构,从上至下划分为高沟组、马家村组、寺沟组。根据盆地岩石组合特点,西峡盆地的沉积可以划分出冲(洪)积扇沉积体系、辫状河—曲流河沉积体系、浅湖与河湖过渡相沉积体系。分析了盆地沉积演化发展过程。
Xixia Basin was an extensional transtension basin which occurred inYanshanian. Sedimentary lithofacies and the characteristics of depositional system of Xixia basin were studied on the basis of stratigraphic distribution and sedimentary formation characteristics. Red thick molasses formation in Xixia basin consist dominantly of normal graded bed sequence, which is divided into Gaogou Fm, Majiagou Fm and Sigou Fm from top to down. According to the characteristics of rock association of basin, the depositional system in Xixia basin is divided into alluvial and diluvial fan, braided river-meandering river, shallow lake and marine-continental transition faceis. Finally the authors analyze the progress of evolution and development about basin sediment.
出处
《资源环境与工程》
2010年第2期134-136,共3页
Resources Environment & Engineering
关键词
沉积岩相
沉积体系
河南西峡盆地
sedimentary lithofacies
depositional system
Xixia Basin in Henan province
