湘鄂渝黔交接区隐伏型红色岩溶地貌形态成因及其区域分布  

Genesis of topography and regional distribution of the concealed red karst landform in the adjoining area of Hunan-Hubei-Chongqing-Guizhou

作　　者：姜伏伟 赖海青 杨庆坤[3,4] 陈友智 于宁 杨涛[6] JIANG Fuwei;LAI Haiqing;YANG Qingkun;CHEN Youzhi;YU Ning;YANG Tao(School of Water Resources and Environmental Engineering,East China University of Technology,Nanchang,Jiangxi 330013,China;Jiangxi Provincial Key Laboratory of Genesis and Remediation of Groundwater Pollution,Nanchang,Jiangxi 330013,China;School of Earth Sciences,East China University of Technology,Nanchang,Jiangxi 330013,China;School of Tourism,Qinghai Minzu University,Xining,Qinghai 810007,China;Southwest Geophysical Company of BGP,CNPC,Chengdu,Sichuan 610213,China;Guizhou Institute of Technology,Guiyang,Guizhou 550003,China)

机构地区：[1]东华理工大学水资源与环境工程学院,江西南昌330013 [2]地下水污染成因与修复江西省重点实验室,江西南昌330013 [3]东华理工大学地球科学学院,江西南昌330013 [4]青海民族大学旅游学院,青海西宁810007 [5]中国石油集团东方地球物理勘探有限责任公司西南物探研究院,四川成都610213 [6]贵州理工学院,贵州贵阳550003

出　　处：《中国岩溶》2024年第4期948-956,共9页Carsologica Sinica

基　　金：东华理工大学博士科研启动基金项目(DHBK2022015)。

摘　　要：红色岩溶为新发现的隐伏型地貌,是埋藏于土下、颜色红艳、形态奇特的岩溶地貌。目前,红色岩溶研究主要集中于定义特征、形成条件、地质成因、演化模式等方面,但其独特的形态的形成机制、塑形过程及隐伏的分布范围尚未深入讨论。文章从物质成分差异、节理裂隙切割及差异溶蚀作用三方面分析红色岩溶地貌形态的形成机制,并讨论了塑形的基本过程及关键地质作用。依据红色岩溶地貌发育的判定条件及地层特征,确定了湘鄂渝黔红色岩溶的分布范围。结果表明:(1)岩层中可溶性物质含量差异及层状韵律层是红色岩溶地貌形态塑形的物质条件。它的动力条件是构造节理裂隙切割与岩体差异溶蚀;(2)红色岩溶地貌形态演化经历四个基本阶段,其中节理裂隙切割、岩土界面溶蚀及节理裂隙面溶蚀是塑形的关键地质作用;(3)湘鄂渝黔四省红色岩溶地貌分布总面积达3433.83 km^(2),主要分布于湘北、湘西北、鄂西南、渝东南及黔东北。Red karst is a concealed landform that has been newly discovered and is buried beneath soil,characterized by its red color and unique shapes.It is widely distributed in the area of Wuling mountain of Hunan,Hubei,Chongqing and Guizhou in China.Compared with common karst landforms,red karst landforms have four basic characteristics:red color,stratified convex morphology,landform lithology of argillaceous limestone,and different dissolution causes in soil environment.Because of its bright red color and unique appearance,red karst is very ornamental and has great tourism economic value.The morphological origin of red karst has been discussed from the perspective of macroscopic geological conditions and tectonic forces,but its mechanism of microscopic morphological formation and shaping process have not been deeply analyzed.In addition,as a concealed landform,it is difficult to be found on the surface,so determining its distribution is of great significance for the relevant investigation and research.Therefore,this paper discusses the formation mechanism and shaping process of the concealed red karst landform from the microscopical point of view,and determines the distribution range of the red karst in the adjoining area of Hunan,Hubei,Chongqing and Guizhou.It can provide the basis for the future investigation and development of red karst.Material composition differences,joint fissure cutting and differential dissolution are the key factors in the formation of red karst geomorphology.The main reasons are as follows:(1)The content of soluble matter on the convex surface of red karst landform gradually increases from top to bottom,while the content of soluble matter on the concave surface is the highest and that on the convex surface is the lowest.This shows that the difference of soluble material content is the material basis for the formation of convex and convex forms of red karst landform.(2)The joint fissure is a good transport channel for water required by dissolution,which can greatly improve the weathering and d

关 键 词：红色岩溶 差异溶蚀 隐伏型地貌 凹凸互层 

分 类 号：P931.5[天文地球—自然地理学]