路南石林喀斯特的形态特征及地质演化(英文)

Morphological Characteristics and Geological Evolution of the Lunan Stone Forest Karst, China

石林喀斯特是喀斯特地貌中的一种极端形式 ,主要由表面溶痕发育 ,高达 30— 50m的剑状石峰、石柱组成。同世界其他一些著名的剑状喀斯特相比 ,路南石林喀斯特具有最为复杂的地质演化历史和最为多样的形态。研究表明 :自 2亿 5千万年前早二叠世末期首次出现石牙以来 ,石林的发育经历了四大演化阶段 ;石林的形成是有利的地质、水文、气候条件综合作用的结果 ,而土下溶蚀是主要形成机理。剑状、峰状、塔状、蘑菇状及其他不规则状为石林的典型形态。

Stone forest Karst is an extreme form of karst landforms composed of pinnacles and spires of up to 30 50m high and fretted with rillenkarrens.The Lunnan Stone Forest of China, in comparison with other celebrated pinnacle karsts in the world, preserves and displays an unparalleled geological evolution complexity and morphological diversity. Study reveals that it involves four major development phases ever since the first stone teeth came into existence in the late of the Early Permian, 250 million years ago. The formation of the Lunan stone forest is the combination result of favorable geological, hydrological and climatic conditions and subsoil erosion is the principle mechanism in the creation of the stone forest. Pinnacle, tower shaped, pagoda shaped, mushroom shaped and other irregular shapes are the typical morphological forms.