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《Journal of Glaciology and Geocryology》 1982-04
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REASSESSMENT ON THE GENESES OF "GLACIAL CIRQUE, TROUGH AND BOULDER CLAY" IN THE LUSHAN REGION

Yao Tandong Li Jijun ( Department of Geology and Geography, Lanzhou University )  
This paper deals with problems arisen from former "glacial relics" in the Lu Shan which often puzzled brains of many geologists and geographers, at home and abroad.Using the data collected from both field works and laboratory analyses, we get some ideas quite different from that of prof. Lee J.S. (李四光) Firstly, we find that the Da-Ao cirque occurring north side of Dayue Mountain, has nothing to do with the form of a typical glacial cirque.There is no rock basin with a threshold on the lip,and also no back wall in sheer face can be found.Its side walls are rather steep indeed, but just near the lip a tight anticline consisted of hard sandstone strata occurs, which probably could account for the steep side walls and even the development of the cirque itself. Moreover, the value of the form ratio ( F ) is 10.8 for Da-Ao cirque, and 8.2 for Huanglong cirque.These values are much too high for a glacial genetic cirque. Similarly, we found that the values of form ratio of troughs in the Lu Shan (F r = D/W ) are hardly possible to be taken as indicator for their galcial origin.Generally, the so-called troughs in the Lu Shan are too shallow,which means no overdeepening happened during the the time they were being sculptured.All the above mentioned facts conflict with the maritime environment of the Lu Shan both in glacial past andpresent. The major part of the paper is devoted to the analyses of the features of the deposits in the Lu Shan region according to sedimentology,the analyses include: 1.Fabric features including the changes of the lithological characters, the gravel shapes and the preferred orientations of long axis and a/6plane. 2.The features of particle-size shown by the parameters,the diagrams of the dots of the parameters and the frequency curve, of the particle-size. To study the original mechanism of boulder clay in; the Lu Shan this paper cit es numerous research results of the valley glacial deposits and the debris-flow deposits at home arid abroad, comparing with the features of boulder clay in the Lu Shan. It is quite clear that the glacial theory is not suitable to explain the genesis of landscape and boulder clay in the Lu Shan, and more works are nee ded to find a way to bring us back to reality.
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【References】
Chinese Journal Full-text Database 3 Hits
1 LIU Zong-xiu~1,ZHAO Zhi-zhong~(1,2),TIAN Jiao-rong~3,WANG Min~1,LI Ming-ze~1(1.Institute of Geomechanics,Chinese Academy of Geological Science,Beijing 100081,China;2.Chinese Research Center of National Geopark,Beijing 100081,China;3.Lushan Administrative Bureau,Jiujiang 332900,Jiangxi,China);ORIGIN OF QUATERNARY MUDDY GRAVEL DEPOSITS IN THE LUSHAN AREA[J];Journal of Geomechanics;2007-04
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3 Liu Changmao, Jing Cairui (Geography Department, Central China Normal University, Wuhan);ON THE GLACIAL LANDFORMS IN LU SHAN[J];Journal of Central China Normal University(Natural Sciences);1989-03
【Co-citations】
Chinese Journal Full-text Database 3 Hits
1 Deng Yangxin (Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences);Characteristics of Till in Tianshan Mountain in China and the Soviet Union[J];Journal of Glaciology and Geocryology;1991-04
2 LI Ya-bing~(1),YI Chao-lu~(2), WEI Ling~(1), CHEN Gong-bi~(1)(1.Department of Urban and Resources sciences,Nanjing University,Nanjing Jiangsu 210093,China;2.Institute of Tibetan Plateau Research,Chinese Academy of Science,Beijing 100085,China);Grain-size Features and Magnetic Susceptibility Characteristic of the SurfaceLayer of the Moraines in the Muztag Ata[J];Journal of Glaciology and Geocryology;2006-03
3 LIU Zong-xiu~1,ZHAO Zhi-zhong~(1,2),TIAN Jiao-rong~3,WANG Min~1,LI Ming-ze~1(1.Institute of Geomechanics,Chinese Academy of Geological Science,Beijing 100081,China;2.Chinese Research Center of National Geopark,Beijing 100081,China;3.Lushan Administrative Bureau,Jiujiang 332900,Jiangxi,China);ORIGIN OF QUATERNARY MUDDY GRAVEL DEPOSITS IN THE LUSHAN AREA[J];Journal of Geomechanics;2007-04
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 ZHOU Bing Gen 1, LI Dian you 2 (1. Department of Geography, Anhui Normal University, 241000, Wuhu, Anhui, China;2. Department of Geography, Lu′an Teachers' College, 241100, Lu′an, Anhui, China);AN ANALYSIS ON THE CHARACTERISTICS AND FORMATION OF THE DIFFERENT GRAVELS IN MOUNTAIN HUANGSHAN[J];JOURNAL OF ANHUI NORMAL UNIVERSITY(NATURAL SCIENCE);2000-01
2 Huang Peihua ( Department of Earth and Space Sciences, University of Science and Technology of China );QUATERNARY CLIMATIC CHANGES IN CHINA AND PROBLEM OF LUSHAN GLACIATION REMNANTS[J];Journal of Glaciology and Geocryology;1982-03
3 Edward Derbyshire (Geography Department,Keele University,England);THE LUSHAN DILEMA: PLEISTOCENE GLACIATION SOUTH OF THE CHANG JIANG ( YANGTZE RIVER )[J];Journal of Glaciology and Geocryology;1982-04
4 Deng Yangxin ( Lanzhou Institute of Glaciulogy and Cryopedology, Academia Sinica );AN EXPLANATION OF THE BOULDER CLAY FORMATION NEAR YANGJIAOLING RIDGE OF THE LUSHAN BY DEBRIS FLOW[J];Journal of Glaciology and Geocryology;1983-01
5 Peng Hanxing ( East China College of Hydraulic Engineering );DISECUSSION ON THE CAUSE OF FORMATION OF THE RED BOUNDER CLAY IN THE LU SHAN[J];Journal of Glaciology and Geocryology;1983-01
6 Huang Peihua ( Deparment of Earth and Space Sciences, University of Science and Technology of China );RESEARCH AND CONTENTION ON THE QUATERNARY GLACIATION PROBLEM OF EAST CHINA DURING LAST 50 YEARS[J];Journal of Glaciology and Geocryology;1983-02
7 Deng Xiaofeng and Wang Cunnian ( Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica );Some Features of Gravel Fabric in Glacial and Periglacial Deposits in Bogda Region, Tian Shan[J];Journal of Glaciology and Geocryology;1983-03
8 Li Jijun and Zhou Shangzhe (Department of Geology and Geography, Lanzhou University);Shapes and Festures of Glaciogenic Gravels[J];Journal of Glaciology and Geocryology;1984-03
9 Deng Xiaofeng (Lanzhou Institute of Glaciology and Geocryology, Academia Sinico);Fabric Characteristics and Genesis of the Diamicton at Yangjiaoling,Lushan[J];Journal of Glaciology and Geocryology;1984-03
10 Peng Hanxing (Hehai University, Nanjing);Disecussion on the Formatation of the Debris Flow of the Red Bounder Clay in the Lushan[J];Journal of Glaciology and Geocryology;1990-01
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