Study on “Mount SanqingshanType” Granite Geology and Landscapes
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    Abstract:

    Mount Sanqing (Sanqingshan) is situated in the southeast of Eurasian continent, just above the Huaiyu paleoisland arc massif within the suture zone between Yangze paleoplate and Cathaysia paleoplate. Covering an area of 229.5km2, with the elevation of 1816.9m of the main summit, the mountain body is a further uprising “uplift on uplift” body, controlled by a triangular block under the background of Mesozoic regional structural uprising. It is mainly composed of the Early Cretaceous Epoch ( 87.4Ma ) “A” type moyite, with the typical features of high silicic、 high potassium and low calcium. The granite body was intersected by block joints and brush fracture cluster with fracture few and scattered、 extending and dissecting, characterized by tensile and shear properties, distributed as zoning, thus the granite geology and landscapes were formed, further by scouring、 weathering and denuding. Mount Sanqingshan is an outstanding example in perfect combination with the global granite geology 、granite landforms and granite ecology, exhibiting unsurpassed natural beauty in forms of pecuriou landscapes. All of these are of irreplaceable scientific value and global correlation significance. ① The north of Mount Sanqingshan is adjacent to the Neoproterpzoic paleoplate suture zone and Mesozoic intracontinental deep subduction zone in Northeast Jiangxi, which is an important Mesozoic structural——magmatic belt, in which “I→S→→A” type granite sequence was formed from Middle and Late Jura——Cretaceous orogenic period to transitional type period. Mount Sanqingshan “A” type moyite is the latest member in the sequence, providing the best spot for studying Mesozoic intracontinental deep subductiontype granite in CircumPacific region. ② Mount Sanqingshan shows various types of granite microlandforms which developed systematically and preserved completely. There are such typomorphic microlandforms with complete types and typical features like overlapped peaks、peak walls、peak clusters、stone forests、peak pillars、peak cones、gorges、cliffs and rich pictographic stones,etc. This kind of landscapes, with conelike overlapped peaks and combinatedtype granite peak forest with closelyspaced peak pillar as the features is called “Mount Sanqingshantype” granite landscape, which is an elaborated creature by Mother Nature under the conditions of special lithologic structure and climate. It has recorded and preserved the evolution history of the earth crust since Mesocenozoic Eras, in particular, have completely recorded and systematically revealed the major endogenic and exogenic processes related to evolution of granite landforms, being a natural museum of granite microlandforms which is of an outstanding universal value. ③ China is one of the countries with the most developed granite in the world, and there exists famous granite mountains. According to the characteristics of granite landscape types, in combination with geological strucutral setting and the genesis of granite landscapes, the most representative granite landscapes are as follows: Mount Sanqingshan、Mount Huangshan、Mount Huashan、Mount Taishan、Putuoshan and Hexigten, which not only represent the main types of granite landscapes, but also the genetic types of granite landforms. Meanwhile ,it shows the different stages in the evolution process of granite landform formation so that a succession of granite landscape can be constituted . Therefore, they are respectively called: “Mount Sanqingshantype”——Mount Huangshantype——Mount HuashantypeMount Taishantype——Putuoshantype and Hexigtentype , of them, “Mount Sanqingshantype” granite landscape is one of the granite landscape types which is of global correlation significance.

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.2007. Study on “Mount SanqingshanType” Granite Geology and Landscapes[J]. Geological Review,53(Supp):56-74.

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History
  • Received:April 06,2007
  • Revised:June 12,2007
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