| Danxia Landform refers to the scarp castle-like, pagoda-like, acicular, columnar, rod and the Fangshan like or peaks-like terrain which is made by the combination of the red clastic rocks (mainly conglomerate and sandstone), which is cemented by uneven mixing of layered iron calcium with level or gently occurrence, subjected to vertical or high-angle joints cut and differential weathering, gravitational collapse, water dissolution, wind erosion and so on."danxia landform" as a new field in geomorphology has become increasingly mature since Chen guoda put forward it in the late1930s. A large number of danxia landform was found and studied by geologists at home and abroad, and a great deal of Danxia landscapes were exploited, which become the local tourist attractions.The Baishi Mountain Danxia landform located in the southeast of Guiping City thirty-five kilometers and in the northwest of Madong Town eight kilometers. The southern margin of the Southern China plate on the geology in Dayaoshan uplift of the South China active zone, controlled by regional tectonic, the mountain strike is NNE. Baishi Mountain is about thirty kilometers, eight kilometers wide. Composed of third lines of red sandstone, conglomerate, pebbly coarse sandstone, inequigranular sandstone and fine sandstone, is a typical Danxia landform. By weathering,this hill is named after watching the shape is white.Paper based on the comprehensive research results of previous theoretical studies of Danxia landform and combined with the characteristics of Baishi Mountain Danxia landform geology landscape development in Guangxi, in order to study systemically on its landscape type, formation mechanism, development process and scientific value. BaiShi Mountain Danxia landform is a typical case; this is the red clastic rock in third intermontane basin deposition, during the period of tectonic movement basin uplift, erosion, dissolution, water cutting, and gravitational collapse of the inner and outer dynamic role in shaping formation. BaiShi Mountain Danxia landform typical centralized, the type is complete, also has a unique landscape. With the typical features of "flat top, steep, slow foot hill". From the mountain, peak cluster, butte, pillar to the monadnock, landform evolution topography, landscape left in its natural state and the system is complete. Baishi Mountain Danxia landform is sedimentary in new era, morphological characteristics of the great, is rare in the Danxia landform, so it has a very high scientific value. So far, the research on Guangxi Baishi Mountain Danxia landform was limited to the investigation of geological work, and less academic research system, its theoretical research is relatively weak. Obviously this topic has innovation in theory.Owing to the National Geopark in Guiping has obtained the qualification of building the National Geopark until2009, which is still in the construction phase. Therefore, the research results of this paper can be a good guide to the park, such as the protection of geological heritage resources, construction and arrangement of Geological Museum, identification system and popular science tourism product design and so forth, thus this thesis would have a very good practical significance.During the research of the paper mainly achieved the following new ideas and innovation:(1) Summarize the development characteristics and spatial distribution characteristics of Danxia landform in Baishi Mountain.Besides the slope basic features of typical Danxia landform which include "flat top, steep slope, slow foothill", Baishi mountain is rather characterized by its magnificent hills further. Baishishan landscape had been controlled compositely by recently deposited nearly horizontal strata and vertical joints, and which can be divided into the Danxia positive landscape and negative one, the former includes mesa, peak cluster, pillars, single peak, monadnock and cliffs and the lane valley, cave, grooves and potholes belong to the latter.(2) Reveal the geological background and formation mechanism of Danxia landform development in Baishi Mountain.The material composition of Danxia landscape derives from the clastic rocks of continental facies in the third tertiary deposition. Under conditions of the inner of Baishi Mountain basin and drought and oxidation, there accumulates red sandstone and conglomerate about395-429meters thick. For the single lithology, sedimentary basin is not easy to divide, so which is named Paleogene collectively. So the lithology includes purplish red thick massive conglomerate, sandy conglomerate, sandstone, siltstone and argillaceous sandstone.Baishi Mountain is located at the western margin of HuaXia fold belt of South China paraplatform, in the region there are fold fractures development everywhere. The regional structural trend mainly is north-east, and east-west, north-west, south-north secondly, they are arranged in a crisscross pattern, new and old structure overlap interference phenomenon is more obvious. The formation and development of the regional structural trend has been controlled by the regional Ma Dong-six Chen N-E trending fault and Yao Cun-Ma Dong S-N fault. In the process of multiple structure activity, the regional structural trend has formed main faults and joints which contain N-E direction, N-W direction and S-N direction and so on. The Paleogene thick conglomerate and sandy conglomerate are cut into various shapes of block by these faults and joints. In the red bed basin, the regional Danxia mountain boundary trend and mountain block arrange direction is controlled by S-N and N-E direction main fracture. However, the orientation of Danxia peristele, line Valley and canyon is controlled by secondary faults and joints contain E-W, S-N, N-NE, to NEE and N-NW direction.Baishi mountain Danxia landscape has experienced3stages of diagenesis, basin uplift and Danxia landforms shaping. According to the characteristics of Baishi mountain Danxia landform, the regional Danxia landform mainly represents peak cluster, pillars, and single peak, and the local area developed mesas and half mesas, but surrounding Baishi mountain where developed discontinuous Danxia monadnock. From above, the Baishi mountain park has remained at early to middle stage of evolution circle of Danxia landforms, but the Cretaceous basin surrounding the park stay at the evolution of extinction period.(3) Propose the typicality and rare of Danxia landform for Baishi mountain.In summarizing basic landscape features of Danxia landform Baishi mountain evaluation of its scientific value, aesthetic value and development value by two aspects of qualitative and quantitative, and compared with The relevant typical Danxia landform landscape of domestic and foreign in a full range, so that point out the typical and rare of Baishi moutain Danxia landform.Compared with the other world Geopark of Danxia landform, the Danxia landform of Guiping national Geopark Baishi mountain is favorite, very typical, rare, mainly reflected in the following aspects:(1) Typical of low altitude peak of southeast humid zone.(2) Deposited in New Era.(3) Danxia landform types, monomer size, color and unique.(4) The religious and cultural flavor is dense.(4) Discusses the protection and sustainable utilization of Baishi mountain Danxia landform based on g Geopark planning.Based on the Geopark plan, make a thorough study of the protection and sustainable utilization of Baishi moutain Danxia landform. Although Baishi moutain Danxia landform has been included in the qualifications of the construction of national Geopark, to effective protection and sustainable use are the premise and core functions in the Geopark construction, therefore, the paper carries out detailed research on the contents, in order to provide scientific theoretical basis for the sustainable development of Guiping national Geopark.At present, in view of the increasingly popular Geopark plan, the best way for the conservation and sustainable use of resources to Danxia landform as the core is to build Geopark, Through the construction of Geopark, not only can achieve effective protection of Danxia landform, but also realize the tourism development of Danxia landform, in order to achieve the objective of sustainable use.The resources of Danxia landform landscape is the core of Danxia landform Geopark construct. At the same time pay attention to the development of other related geological heritage resources and cultural landscape resources, can further improve the comprehensive quality of Geopark resources. |
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