广西大化七百弄国家地质公园地质遗迹资源评价及地学意义

摘要

Karst geoparks in China have been known for the particulars of scenic beauties such as stone forest,can-yons,caves,etc.,but they seldom were built on as an ultimate tourist attraction due to a kind of rare landscape con-sisted of a cluster of peaks surrounded by deep depressions.Qibailong National GeoPark in Guangxi is a typical Karst geopark,which features landscape prominently by a cluster of precipitate peaks encircled by deep depres-sions.In this study,geological relic resources in Qibailong National GeoPark were characterized for evaluation and categorized.It can be divided into 6 categories with 12 subgroups,6 of which were geomorphologic landscape,geo-logical profile,water landscape,paleontology,and environmental geological heritage.By comparing some of geolog-ical relic resources on a national basis and quantitative analysis,it conducted a comprehensive evaluation on geolog-ical relic resources in Qibailong National GeoPark.Then it discussed the geological significance of the geological relic resources in Qibailong National Geopark.Results suggested that cluster peak depression,Gangfanglong ultra-deep depression and Disu underground river,all of which were graded as world-class geological relic resources;Some deep depressions,including ones at Longyao,Longchao,etc.,belonged to state-level geological relic resource, which possessed important tourism development merits and scientific value.Geological relic in the geopark is of great geological significance in karst geomorphology,geological tectonics,hydrogeology,geological environment evo-lution.This research exemplified exploitation and preservation of geological relic resources in Qibailong National GeoPark and it would be of particular significance in its reference to science and tourism.%国内岩溶地质公园多以石林、峡谷、溶洞等景观为主,而以高峰丛深洼地地质遗迹为主要特色的地质公园较为罕见.广西大化七百弄国家地质公园是以高峰丛深洼地景观为主导的岩溶地质公园.本文以七百弄国家地质公园的地质遗迹资源为基础,将地质遗迹资源划分为地貌景观大类、地质剖面大类、地质构造大类、水体景观大类、古生物大类及环境地质遗迹大类6大类、12亚类等不同的地质遗迹类型,并且对主要地质遗迹资源特征进行分析.通过地质遗迹资源的对比分析和定量研究,对主要地质遗迹资源进行评价.在此基础上,探讨七百弄国家地质公园地质遗迹资源的地学意义.研究结果表明:高峰丛深洼地、甘房弄超深洼地、地苏地下暗河地质遗迹资源为世界级地质遗迹资源;弄瑶、弄朝等深洼地为国家级地质遗迹资源,并且该地质遗迹资源具有重要的旅游开发价值和科研价值.地质公园内的地质遗迹资源,即地质遗迹资源在岩溶地貌学、地质构造学、水文地质学、地史环境演化等方面具有重要的地学意义.本文的研究结果为七百弄国家地质公园地质遗迹资源利用及保护提供理论基础.