Study on the evoluation of Danxia landform in Jiangxi Province and its structural factors
More than 30 red graben basins developed along some regional fault zones in Jiangxi Province from Late Cretaceous to Paleogene.These red basins with thick continental clastic sediments were the basis for the formation of Danxia landform.The evolutional stages of 228 sites of the Danxia landforms in Jiangxi Province were studied and show that:Most Danxia landforms sites locate in the northern and western piedmont of the Wuyi Mountains.Based on the satellite remote sensing and DEM data,the hypsometric integral simulation analysis of the Danxia landforms in this area is carried out.Evolutional stages of the Danxia landform are late mature to early old-age stage,and there is a tendency from south to north,shifting to higher evolution stage in the spatial distribution.Joints and the uplift of the Wuyi Mountains play an important role in the evolution of the Danxia Landforms in Jiangxi Province,which is shown as follows:① the cliffs,thin strip of sky,lane valleys,stone walls,stone camp,peak clusters,peak forests and other landscapes developed in Longhu Mountain,Jiuxian Lake,Xianyan,Hamawu,Zhetingshan and Guifeng peak are all related to joints.② Water erosion and other external forces play an important role in the stripping and leveling of Danxia landform.Statistics show that the closer to the Wuyi Mountains,the denser the peaks and the steeper the cliffs of Danxia landform,indicating that the uplift of the Wuyi Mountains is directly related to the development of the Danxia landform.In general,the red beds in Jiangxi Province provide the sediment source for the development of the Danxia landforms,and the uplift of the Wuyi Mountains controls the evolution stage of the Danxia landforms.It is worth noting that whether the joints in Danxia landform area is resulted from the uplift of the Wuyi Mountains needs to further study.
red bedsDanxia Landformgeomorphic evolutionfractureJiangxi Province
万方数据
维普
