Experimental studies on the Danxia landscape morphogenesis in Mt. Danxiashan, South China  

作　　者：ZHU Cheng WU Li ZHU Tongxin HOU Rongfeng HU Zhinong TAN Yan SUN Wei JIA Tianjiao PENG Hua 

机构地区：[1]School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China [2]College of Territorial Resources and Tourism, Anhui Normal University, Wuhu 241002, Anhui, China [3]Department of Geography, University of Minnesota-Duluth, MN 55812, USA [4]Administrative Committee of Danxiashan Scenic Spot, Shaoguan 512300, Guangdong, China [5]Nanjing Hydraulic Research Institute, Nanjing 210029, China [6]School of Geography and Planning, Sun Yat-Sen University, Guangzhou 510275, China

出　　处：《Journal of Geographical Sciences》2015年第8期943-966,共24页地理学报（英文版）

基　　金：National Natural Science Foundation of China, No.41371204; No.41171163; No.41401216; National Science and Technology Basic Special Key Project, No.2013FY 11 1900; Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, No.SKLLQG1206; No.SKLLQG1422; National Basic Science Personnel Training Project, No.J1103408; Foundation of Modern Analysis Center, Nanjing University, No.0422171010; Priority Academic Program Development of Jiangsu Higher Education Institutions, No.PAPD,Acknowledgements We appreciate the laboratory and field assistance of KONG Qingyou, LIU Di, YANG Li, WANG Xiaocui, FU Jingcheng, LIANG Guomin, MAO Xiaodong, FAN Dengfeng, LUO Jiehong, WU Huaan, TAN Ming, DAI Huibao, and XIE Zhangzhen.

摘　　要：The formation of Danxia landscapes is too slow to be observed in our life time and the paleoclimates in which Danxia landscapes developed are significantly different from the present. Thus, this study adopted experimental approaches to examine the lithological and paleoclimatic control on the formation of various landscape morphologies in the Mt. Danxiashan, South China. A total of 122 rock samples were collected from a range of Danxia landscape morphologies such as white spots, small and large through caves, honeycomb caves, horizontal grooves, natural bridges, stone pillars, and squama stones. Analyses of the collected samples were conducted in different kinds of experiments, including uniaxial mechanical strength testing; rock resistance against sulfuric acid erosion, freezing, and thawing; X-ray fluorescence spectrometry（XRF） analysis; inductively coupled plasma mass spectrometry（ICP-MS） analysis; and identification analysis under a polarizing microscope. The results indicated that the formation of the various Danxia landscape morphologies could result from one or more of the following processes： differential erosion due to lithological difference, chemical dissolution and recrystallization, freezing and thawing actions, acid corrosion, weathering, lateral erosion of river flows, and tectonic uplifts. Water erosion in humid monsoon climate and the alternations of intensive freezing and thawing actions in the Quaternary glacial stages and the interglacial stages could have had great influences on the formation of Danxia landscape topographies.The formation of Danxia landscapes is too slow to be observed in our life time and the paleoclimates in which Danxia landscapes developed are significantly different from the present. Thus, this study adopted experimental approaches to examine the lithological and paleoclimatic control on the formation of various landscape morphologies in the Mt. Danxiashan, South China. A total of 122 rock samples were collected from a range of Danxia landscape morphologies such as white spots, small and large through caves, honeycomb caves, horizontal grooves, natural bridges, stone pillars, and squama stones. Analyses of the collected samples were conducted in different kinds of experiments, including uniaxial mechanical strength testing; rock resistance against sulfuric acid erosion, freezing, and thawing; X-ray fluorescence spectrometry（XRF） analysis; inductively coupled plasma mass spectrometry（ICP-MS） analysis; and identification analysis under a polarizing microscope. The results indicated that the formation of the various Danxia landscape morphologies could result from one or more of the following processes： differential erosion due to lithological difference, chemical dissolution and recrystallization, freezing and thawing actions, acid corrosion, weathering, lateral erosion of river flows, and tectonic uplifts. Water erosion in humid monsoon climate and the alternations of intensive freezing and thawing actions in the Quaternary glacial stages and the interglacial stages could have had great influences on the formation of Danxia landscape topographies.

关 键 词：experimental studies rock properties Danxia landform PALEOCLIMATES China 

分 类 号：P532[天文地球—古生物学与地层学] TU986.2[天文地球—地质学]