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《Journal of Glaciology and Geocryology》 1984-03
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Shapes and Festures of Glaciogenic Gravels

Li Jijun and Zhou Shangzhe (Department of Geology and Geography, Lanzhou University)  
The typical shape of a glaciogenic gravel is like a flatiron stone with stria surface. Statistics were made on the shape of 150 glaciogenic gravels at diameter from 5-15 cm and with one or more stria surfaces, of mainly medium-grained granite and a few sericite schist. Characteristics of their shape are: 28% in trianglar tetrahedron, 21% in trianglar flat-shaped body, 20% pentagonal flat-shaped body, 11% rectangle pillar, 7 % quasi-cylinder,6 % rhombus and 7 % irregular body, with first three types making up to 70%, having generally a large surface, and reflecting that the till gravel has not only a fixed position in the glacier but also a fixed sliding surface ( ice bed or shear plane ) . This is the reason why a glaciogenic gravel looks like a flatiron stone with stria surface. Besides flatiron shape boulder in till, there are also several other kinds of peculiar-shaped glaciogenic boulder, indicators of distinguished ancient glaciation, for example, the turtlebacked stria stone, wedge-shaped arrowhead stone and stria surfaced pebble. In nature, many dynamic processes can form striae, but only few make stria surfaces. Because of the pressure of squeezing one another, till boulders tend to be cracked but not crushed. So far no "saddle stone" or "lantern stone" formed by plastic deformation is found. For glaciers in movement create stress field in them changing all the time, but no plastic deformation under long and slow pressure could be developed. Former reports in this regard seem to have nothing to do with glacier.
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【References】
Chinese Journal Full-text Database 4 Hits
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 Li Jijun ( Department of Geology and Geography ,Lanzhov University );ON GLACIAL STRIATION[J];Journal of Glaciology and Geocryology;1982-01
【Co-citations】
Chinese Journal Full-text Database 9 Hits
1 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
2 Liu Gengnian (Geography Deportment of Beijing University);Research on Glacial Erosional Landforms: Case Study of Luojishan Mt. Western Sichuan[J];Journal of Glaciology and Geocryology;1989-03
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4 Wu Ruitang (China University of Geosciences , Wuhan 430074) Yang Yuqing (Henan Institute of Petroleum Workers ,Nanyang);THE INDICATORS FOR RECOGNIZING GLACIAL EVENT[J];;1991-04
5 Han Tonglin (Institute of Geology, Chinese Academy of Geological Sciences);THE DISCOVERY OF QUATERNARY GLACIAL POLISHEDSTRIATED PEBBLES IN THE XIAYINGFANG DISTRICT, PINGQUAN COUNTY, HEBEI PROVINCE, AND ITS SIGNIFICANCE[J];Geological Review;1991-04
6 Yang Yuqing(Workers College,Bureau of Prospecting of Henan Province)Wu Ruitang(China University of Geosciences);THE SEDIMENTARY CHARACTERISTICS AND GENESIS ANYLSIS FOR COMPLEX CONGLOMERATE OF LUOQUAN FORMATION IN WESTERN HENAN[J];HENAN GEOLOGY;1994-02
7 Cui Chunlong(Sichuan Institute of Building Materials Mianyang 621002) Liu Xiufeng(Chengdu College of Geology Chengdu 610059);GLACIOMARINE SEDTMENTATION AND SEDTMENTARY MODEL IN THE GAOTIAN FORMATION OF SINIAN XIUSHAN, SICHUAN PROVINCE[J];Journal of Mineralogy and Petrology;1990-03
8 Zhijiu CUIDeptment of Geograpy, Peking University, Beijing 100871Chaolu YILaboratory of Environment and Territory, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, 430077;MICROFABRIC STUDY OF TILL AT MOUNTAINS TIANSHAN AND ALTAY[J];Journal of Basic Science and Engineering;1994-04
9 LI Yingkui (Department of Urban and Environmental Sciences, Peking University, Beijing 100871);Discussion on the Graduation Character and its Spatial Distribution of Glacial Striae at the Head of Urumqi River[J];JOURNAL OF BASIC SCIENCE AND ENGINEERING;1999-04
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Li Jijun ( Department of Geology and Geography ,Lanzhov University );ON GLACIAL STRIATION[J];Journal of Glaciology and Geocryology;1982-01
2 Yao Tandong Li Jijun ( Department of Geology and Geography, Lanzhou University );REASSESSMENT ON THE GENESES OF "GLACIAL CIRQUE, TROUGH AND BOULDER CLAY" IN THE LUSHAN REGION[J];Journal of Glaciology and Geocryology;1982-04
3 Zhang Zhenshuan (Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica);Grain-size Characteristics of Moraine in the Region of Mt. Bogda, Tian Shan[J];Journal of Glaciology and Geocryology;1983-03
4 Tang Yongyi (Lanzhou Institute of Glaciology and Cryopedology,Academia Sinica);Mineriat Characteristics of the Fine-Grained Moraine in Bogda Region, Tian Shan[J];Journal of Glaciology and Geocryology;1983-03
5 Cui Zhijiu (Department of Geography, Beijing University) Xie Youyu (Institute of Geography, Academia Sinica);Argument on and Future of the Problems of the Pleistocene Glaciers in the Eastern Part of China[J];Journal of Glaciology and Geocryology;1984-03
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10 Chi Kuo-chin Institute of Vertebrate Palaeontology and Palaeoanthropology, Academia Sinica;ANIMAL BONES FROM TANSHISHAN NEOLITHIC SITE, MINHOU, FUJIAN[J];;1977-04
【Secondary References】
Chinese Journal Full-text Database 3 Hits
1 Zhou Zhicheng, Fang Zongjie, Guo Zhenyu, Wang Yujing ( Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing,2 1 0 0 0 8) Xiao Yinwen ( Regional Surveying Team of Geological Bureau of Yunnan,Yuxi,65 31 0 0 );Dingjiazhai Formation of Jinji Section in Baoshan Region of Western Yunnan with a Discussion on the Ancient Water Temperature[J];JOURNAL OF STRATIGRAPHY;1999-03
2 Yang Yuqing(Workers College,Bureau of Prospecting of Henan Province)Wu Ruitang(China University of Geosciences);THE SEDIMENTARY CHARACTERISTICS AND GENESIS ANYLSIS FOR COMPLEX CONGLOMERATE OF LUOQUAN FORMATION IN WESTERN HENAN[J];HENAN GEOLOGY;1994-02
3 JI Zhansheng1, YAO Jianxin1, WU Guichun1, JIANG Zhongti2, FU Yuanhui31. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Geological Material Center, China Geological Survey, Yanjiao 065201, Sanhe, Hebei, China;3. School of Earth Science and Resources, China University of Geosciences,Beijing 100083,China;Discovery of dropstones in the Poindo Group, northern Lhasa, Tibet, China, and its significance.[J];Regional Geology of China;2005-06
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