陕西南郑小南海天坑群与广西乐业大石围天坑群对比研究  

A Comparative Study of Xiaonanhai Tiankeng in Nanzheng,Shaanxi Province and Dashiwei Tiankeng Group in Leye,Guangxi province

作　　者：任娟刚 洪增林 张远海[4] 张静[5] REN Juangang;HONG Zenglin;ZHANG Yanhai;ZHANG Jing(Shaanxi institute of geological survey,Xi'an 710065,Shaanxi,China;Hanzhong tiankeng group international research base,Hanzhong 723100,Shaanxi,China;Northwestern Polytechnical University Xi'an 710072,Shaanxi,China;Institute of Karst Geology,CAGS/Karst Dynamics Laboratory,Guilin,541004,Guangxi,China;School of history culture and Tourism,Shaanxi University of Technology,Hanzhong,723000,Shaanxi,China)

机构地区：[1]陕西省地质调查院,陕西西安710065 [2]汉中天坑群国际研究基地,陕西汉中723100 [3]西北工业大学自动化学院,陕西西安710072 [4]中国地质科学院岩溶地质研究所,广西桂林541004 [5]陕西理工大学历史文化与旅游学院,汉中陕西723001

出　　处：《西北地质》2020年第2期298-307,共10页Northwestern Geology

基　　金：陕西省教育厅2019年教育薄弱环节改善与能力提升补助项目“天坑群地质遗迹价值与保护利用研究”(2050205-50502);陕西理工大学校级重点项目“秦巴岩溶区全新世环境演化与生态地质评价”(SLGPT2019KF04-06)。

摘　　要：通过对比分析南北典型岩溶地质遗迹大石围天坑群和小南海天坑群,加深了对汉中天坑群的认识。从自然地理背景、地质条件、地质遗迹类型与特征、天坑群发育演化模式等方面,与广西乐业大石围天坑群进行对比,陕西南郑小南海天坑群分布于湿润热带-亚热带最北端,发育于扬子地台区北缘的岩溶台原区。境内天坑、溶洞、竖井、断崖、峡谷、峰丛、洼地、地下河及化学沉积物等地质遗迹集中发育且组合丰富,形成一个由非可溶岩系、地表分水岭组成隔水边界的相对独立的岩溶系统,呈现内源水窗式天坑演化特点,具有很高的学术研究价值和景观价值。The typical karst geological relics of Dashiwei Tiankeng group in the South of China and Xiaonanhai Tiankeng group in the North of China are comparatively analyzed to helpfully deepen the understanding of the Tiankeng group in Hanzhong,Shaanxi province.Compared with Dashiwei Tiankeng group in Leye,Guangxi,from aspects of geographical background,geological conditions,geological relics and characteristics,evolution model,Xiaonanhai Tiankeng group in Nanzheng of Shaanxi is distributed in the most northern part of humid tropical-subtropical zone and developed in the karst platform area in the northern margin of the Yangtze platform.Geological relics such as Tiankeng,karst cave,shaft,cliff,canyon,peak cluster,depression,underground river,and chemical sediment,are intensively developed and combined,forming a relatively independent karst groundwater system with impervious boundary of non soluble rock series and surface watershed,showing the evolution characteristic of water-window-like endogenous sinkholes,having a high value in academic research and in landscape.

关 键 词：小南海天坑群 内源水 演化模式 陕西南郑 

分 类 号：P642.252[天文地球—工程地质学]