雁荡山流纹岩地貌景观特征及其形成发育规律

流纹岩地貌有其独有的特色和发育规律。本文根据大量的实地调查数据,对雁荡山流纹岩地貌景观进行了类型、空间分布规律和时间发育规律的分析研究。研究结果表明:区域流纹岩地貌景观可分为2个大类,6个亚类,16个类型单元;受区域断裂构造的控制,区内沟谷和岩嶂在平面上的发育延伸主要沿NE、NW和EW三个方向;在新构造运动和岩性差异的控制下,区内峰、嶂、瀑在垂向上的分布具有分带性;区域现代地貌的发育肇始于晚第三纪区域一级夷平面的分裂解体,自此以后的区内地貌演化经历了四个不同发育阶段,每个阶段的地貌景观组合各具特色。

The Rhyolite Landforms and Development Law in Yandang Mt.

The features and the development law of rhyolite landforms are unique. Based on the survey and analysis data, the paper has analyzed the types, the distribution and the development of the rhyolite landforms in Yandang Mt. The study results show that the landforms in this region can be divided into two types, six sub-types and sixteen type units. The peaks, cliffs and waterfalls are all distributed vertically at different heights, and the valleys and line-cliffs extend along the faults with strikes of NE, NW and EW horizontally. The development of the landforms in the region has experienced four stages in which there developed different kinds of landforms. The study in the paper can contribute to the building of this World Geopark and flourish the local tourism