节点文献
少华山地质遗迹景观特征及地学意义
Geological Relic Resources and Its Features of Shaohuashan Geopark,in Huaxian County,Shaanxi
【摘要】 依据对少华山地质公园地质地貌考察和区域地质构造现有资料等综合分析,划分出地质遗迹资源类型,并探讨了主要地质遗迹资源特征。结果表明,少华山地质公园属秦岭造山带发展演化中的重要组成部分,以花岗岩地貌景观资源为主体,兼具混合岩化、区域断裂、瀑潭泉湖、古地震崩塌遗迹等。开展少华山区域研究,将为北秦岭构造演化和古地理环境分析提供有利突破口,公园内老牛山花岗岩体将为区域深部地壳物质组成提供大量信息,华县特大地震遗迹具有开展新构造运动与地震关系研究和防灾避险科普教育等科学意义。
【Abstract】 Shaohuashan Geopark is located at the joint of the north China Plate and Yangtze plate,Qinling Structral Belt and Weihe Graben. During the process of its evolution,the park has developed into geological relic resources which specially have both similar and different characteristics with those of Qinling Structral Belt. Regional lithostratigraphic unit is relatively single,mainly including the Archean Taihua Group gneiss,Indosinian- Yanshan period granite,sporadic outcropped Tertiary and Quaternary. Qinling piedmont fault run through the park from north to west. Based on the integrated analysis of regional tectonics and the characteristics of geological relic resources in the park,types of geological relic and the main process of its evolution have been divided for the first step. With exquisite landscape,good ecological environment,precious geological remains,as well as rich and colorful human cultural landscape Shaohuashan has high scientific value and aesthetic value.As is shown in the result,Shaohuashan Geopark is an important part of the development of Qinling Structral Belt and its geological relic is mainly composed of granite,along with other heritages such as migmatization,regional fracture,waterfalls,deeps,lakes,springs,and collapse resulted from ancient erthquakes. It will be a beneficial breakthrough for the Northern Qinling structral evolution and the analysis of palegeographic environment to carry out the area study of Shaohuashan. Research on the piedmont fault of Qinling is not only can solve the southern margin tectonic problems of North China Craton during Proterozoic,and is a key to study the evolution from Mesozoic to later,and also a key to analysis its relationship with Weihe Graben. Laoniushan ganite will provide abundant information for material composition deep in the regional crust,while the heritage of Huaxian county great earthquake makes scientific sense in that it helps study the relationship between neotectonics and earthquakes and promote the popular edution of disaster-prevention.
【Key words】 features of geological relic; earth scientific significance; geopark; Shaohuashan;
- 【文献出处】 山地学报 ,Mountain Research , 编辑部邮箱 ,2015年06期
- 【分类号】P901;P942
- 【被引频次】5
- 【下载频次】262