江西会昌盆地红层及其地貌发育研究

Study on the Red Beds and its Landforms in Huichang Basin of Jiangxi

武夷山南段西麓会昌盆地晚白垩系红层中发育典型的丹霞地貌,景观类型有石峰、石崖、石柱、一线天、洞穴和造型石等,其主要集中分布于盆地边缘地区,盆地中部也有少量的分布。丹霞地貌发育于茅店组、周田组和河口组红层的厚层、巨厚层砂砾岩中,其中周田组是主要的成景地层。晚白垩系红层主要岩性为紫红色砾岩、细砾岩、砂岩、粉砂岩和泥岩。受边界断层、红层岩性、构造活动以及流水作用等成景要素的综合影响,盆地不同位置发育有不同类型的丹霞地貌。

Huichang basin is located in the west piedmont of the southern Wuyi mountain and in which the Late cretaceous red beds develop typical Danxia landforms. The landscape types include shifeng, wallflowers, column, thin strip of sky, caves and shape stone, and they mainly distributed in the basin edge region, some others distributed in the central basin. Danxia landform develop in the thick bedded pebbled sandstone of Maodian formation, Zhoutian formation and Hekou formation,including Zhoutian formation is the main landscape genesis layer. The lithology of late cretaceous red beds is mainly for purple conglomerate, fine conglomerate, sandstone, siltstone and mudstone. Due to the influences of landscape genesis elements such as boundary fault, lithology, tectonic activity and fluviation, different Danxia landform types develop in different location of the basin.