皖北宿州地区岩溶地貌分类及其发育规律

Classification and Development Laws of Karst Landform in Suzhou Area,Northern Anhui Province

宿州地区在地貌上为淮北平原的低山丘陵区,碳酸盐岩分布广泛,岩溶作用普遍发育,岩溶地貌景观构成了基岩出露区的主要地貌形态。通过野外地质调查,依据岩溶的组合形态和个体形态特征,将皖北宿州地区岩溶地貌类型划分为宏观地貌景观和微观溶蚀形态两大类。宏观地貌景观有常态山、干谷和干沟、岩溶泉、溶洞等,微观溶蚀形态有溶坑、溶孔、溶痕、溶隙、石芽和溶沟等。该区岩溶地貌的分布、发育程度和规模受气候、岩石类型、构造、地形等因素的控制,可以作为北方岩溶的典型代表。

Suzhou area in North Anhui Province is a low-lying hilly area on the Huaibei Plain where carbonate rocks and karstification are widely distributed,and karst landscapes form main areas of the bedrock outcrops.Through field investigation,karst landscapes in the study area were divided into two categories based on their morphological characteristics.One is macro-landscape,including normal hills,dry valley,karst spring and cave.The other is micro-landscape,including corrosion pits,dissolved pores,dissolution traces,corrosion cracks,clints and karrens.Distribution,development and scale of karst landscapes were controlled by climate,rock type,structure,topography and other factors.It was suggested that karst landscapes in the study area could be used as a representative of karst in North China.