浙江省方岩地区构造地貌剖析

Interpretation of the Tectonic Landform in the Fangyan Area,Zhejiang Province

本文分析了方岩地区的地质基础、地貌特征及其分布规律.进而揭示了构造与地貌之间的内在联系:构造线控制了地貌的分布区域;不同地区不同岩性、不同构造部位不同岩层产状,发育着不同类型地貌;NW、NNE 二组交叉节理制约着山文沟谷的伸展方向;崖壁洞穴是由于岩性软硬不同,差异风化剥蚀而就.最后,以沉积相研究方法重溯了方岩地区早白垩世沉积环境及其地貌形成简史.

This paper analyses the geological base,geomorphic,features and rules of their distribution in the Fangyan area and then reveals the internal relations between the tectonic structure and landform:the tectonic line controls the geomorphic distribution;different lithologic characters and rock stratigraphic occurence,in different areas result in different kinds of landform;the cross-joint of NW with NNE controls the stretching directions of the valleys and mountain ranges;caves on scarp surface result from weathering of different lithological compositions.Finally,using the method of sedimentary facies research,the paper tries to reconstruct the ancient environment of the early Cretaceous Period and describe the brief history of geomorphic evolution in the Fangyan area.