东帕米尔高原冰川花岗岩漂砾风化穴初步研究  

A PRELIMINARY STUDY ON TAFONI DEVELOPED ON GLACIAL GRANITE BOULDERS IN EASTERN PAMIR

作　　者：郑景雄[1] 周尚哲[2] 王杰[1] 郭向中[1] 

机构地区：[1]华南师范大学地理科学学院,广东广州510631 [2]兰州大学资源与环境学院,甘肃兰州730000

出　　处：《华南师范大学学报（自然科学版）》2009年第3期109-113,126,共6页Journal of South China Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(40771049)

摘　　要：通过对东帕米尔高原一冰碛平台上花岗岩漂砾风化穴的仔细观察,根据发生部位和形态特征对风化穴进行分类,并结合当地地形、气温、降水等自然条件对风化穴的成因进行分析,初步认为本区花岗岩漂砾风化穴的主要类型为边墙形、蜂巢型、底穴型、沟槽型,是温差风化(含寒冻风化)、盐风化和山谷风侵蚀综合作用的结果,其中谷风侵蚀在边墙型风化穴形成过程中起主导作用.Through a careful observation to tafoni developed on glacial granite boulders in Eastern Pamir, the tafoni are classified into side - wall tafoni, basal tafoni, cellular tafoni and trough tafoni according to their morphological characteristics and positions. Their genesis is analyzed by combining with local terrain, air temperature and precipitation. The authors put forward that the tafoni are results from the joint effects of temperature difference weathering, salt weathering and mountain - valley wind deflation. The valley wind deflation plays a leading role in the genesis of side - wall tafoni.

关 键 词：东帕米尔 风化穴 花岗岩漂砾 

分 类 号：K903[历史地理—人文地理学]