西安翠华山山崩地质遗迹及资源评价

The Resource of Geological Remains by Landslide in Cuihua Mountain, Xi'an and Resource Evaluation

西安翠华山山崩地质遗迹被誉为“中国山崩奇观” ,该山崩遗迹成因特殊、规模壮观、体量巨大、形态保存完整、景观奇特。在分析了山崩产生的构造、岩性和地貌等条件的基础上探讨了山崩形成的过程 ,认为历史时期的多次地震和强降水是山崩产生的重要触发因素 ,评价了山崩地质遗迹的资源特点 ,阐述了其在科学研究。

The geological remains by mountain slide on Cuihua Mountain in Changan County of Xi'an is a rare resource of geological remains at home and abroad. It's grand scope, gigantic volume, intact landforms types and peculiar landscape all are the only in our nation. The remains scatters in the valley of Taiyiyu River on the northern slope of Qinling Mountain,China. All types of landslide landforms can be seen here and there are mainly three component parts formed the remains: the matrix cliffs of air face by landslide,the barrier lake,the rock-block field by land slide. In history three bar lakes had been formed all with obvious natural rockfill dams . Between matrix air faces about 200～300 meters high there scattered uncountable slide stones, the individual volume of which varies from thousands to tens of thousands cubic meters and total volume is about 300 million cubic meters. Inquiring into structural feature of fault and crack, chroismite character,tectogenesis and structural landforms conditions in this region and synthesizing historical records on earthquake and human activity and base materials conclusions can be obtained: it occurred in human history of Holocence; two series of structural cracks caused by faults movement controlled the slide formation quickened or initiated by earthquake and cloudburst. As a type of resource the integrity,wide scope,scarcity,ornamental value, esthetics sense and durability of the remains here makes itself be of quite high value for science, popular science and regional tourism economy. Therefore,protecting and utilizing the resource is of significance not only for research and regional economy but for utilizing geological remains to improve living quality and making geological theory serve for tourism economy. Moreover,this will greatly enrich the content of landscape geology.