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Yang Xiaoping (Institute of Geology and Geophysics, Chinese Academy of sciences, Beijing 100029)  
Loess and loess like sediments are vastly spread over the marginal mountains of the Tarim Basin and Zhungaer Basin in Xinjiang of northwestern China. Around the basins there are often two different aeolian sedimentation belts, which are separately covered by loess, and loess like deposits. Generally speaking, the loess is more intensively developed in the southern margin of the basin than in the northern. On the northern flank of Kunlun Mountains,loess is mainly distributed between 2 500m and 3 400m a.s.l.(above see level), and its thickness is seldom over two dozen meters. Small loess patches with a thickness of about 1m may occur even at the elevation over 5 000 m a.s.l. But in the Tianshan Mountains, the loess is considerably restricted to 950m and 2 400 m a.s.l. on the southern flank, and 800m and 2 000m on the northern side. The samples taken from Tashikuergan to Yütian of the northern flank of Kunlun Mountains show the grain size of loess tends to increase from West to East. Compared with Loess Plateau, the loess in Xinjiang is generally coarser probably owing to its shorter transport distance. The samples from Pulu in the upper reaches of Keriya River indicate that the percentage of heavy minerals in the loess is 5.5% on average. The content of stable and very stable minerals is only some 20%. One third of the heavy minerals is hornblende. Besides, the content of epidote, iron minerals and black mica is relatively high also. From the field investigation and laboratory analysis, it concludes that the preserved loess in the surrounding mountains of the Tarim Basin has been deposited mainly in Holocene. There the loess accumulation takes place principally during the intergalcial periods. Under the more severe climatic conditions of glacial times, the vegetation in the present loess zone would deteriorate considerably, and a stronger deflation and sand accumulation would replace the process of loess sedimentation. But in the northern flank of Tianshan Mountains, several layers of paleosol are present in the loess section, and both Holocene and late Pleistocene loess is observed.
【Fund】: 中国科学院资助!项目 (批准号 :KZ95 2 -5 1-4 3 8)
【CateGory Index】: P535.245
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1 Tang Zihua①② Mu Guijin③ Chen Dongmei④ Wu Xinhua⑤ Ali Aysa⑤(①Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing100029;②Graduate University of Chinese Academy of Sciences,Beijing100049;③Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,rümqi830011;④Academy of Exploration and Development,Northwest Company,SINOPEC,rümqi830011;⑤Institute of Archaeology,Chinese Academy of Social Sciences,Beijing100710);EOLIAN DEPOSITS IN NORTHERN SLOPE OF KUNLUN Mts AND THEIR PALAEOENVIRONMENTAL IMPLICATIONS DURING THE PAST 5000 YEARS[J];Quaternary Sciences;2007-04
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1 JIAO Ke-qin~(1), Shuji IWATA~(2), YAO Tan-dong~(3,4), JING Zhe-fan~(1), LI Zhong-qin+1 (1.Cold and Arid Regions Environment and Engineering Research Institute ,Chinese Academy of Sciences, Lanzhou Gansu 730000, China; 2.Institute of Geography, Tokya University, Japan; 3.Institute of Tibetan Platuea Research, Chinese Academy of Sciences, Beijing 100085, China; 4.Key Laboratary of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China);Variation of Zepu Glacier and Environmental Change in the Eastern Nyainqêntanglha Range since 3.2 ka BP[J];Journal of Glaciology and Geocryology;2005-01
2 Gao Cunhai(Ceography Institute of Xinjiang, Academia Sinica) Zhang Qingsong(Institute of Geography, Chinese Academy of Sciences and State Planning Commission of the People's Repualic of China);PRITLIMINARY STUDY ON LOESS AND ITS SEDIME NTARY CONDITIONS ON NORTHERN SLOPE OF MIDKUNLUN MTS.[J];Geographical Research;1991-04
3 Sun Xiangjun; Du Naiqiu; Weng Chengyu (Institute of Botany, Chinese Academy of Sciences)Lin Ruifen; Wei Keqin (Cuangzhou New Technical Institute of Geology, Chinese Academy of Sciences);PALEOVEGETATION AND PALEOENVIRONMENT OF MANASI LAKE, XINJIANG, N. W. CHINA DURING THE LAST 14000YEARS[J];Quaternary Sciences;1994-03
4 Yao Tandong(Ice Core and Cold Regions Environment Laboratory,Chinese Academy of Sciences,Lanzhou 730000);CLIMATIC AND ENVIRONMENTAL RECORD IN THE PAST ABOUT 2 000 YEARS FROM THE GULIYA ICE CORE[J];QUATERNARY SCIENCES;1997-01
5 Wang Shaowu; Ye Jinlin; Gong Daoyi(Department of Geophysics, Peking University, Beijing 100871);CLIMATE IN CHINA DURING THE LITTLE ICE AGE[J];QUATERNARY SCIENCES;1998-01
6 Wang\ Yongjin ① \ Kong\ Xinggong ① \ Shao\ Xiaohua ① \ Wu\ Jiangying ② (① College of Geograghy Science, Nanjing Normal University, Nanjing 210097; ② Department of Earth Sciences, Nanjing University, Nanjing 210093);CENTURY-SCALE CLIMATIC OSCILLATIONS DURING THE LAST GLACIAL MAXIMUM RECORDED IN A STALAGMITE FROM NANJING[J];Quaternary Sciences;2002-03
7 Sun Qianli ①③ Xiao Jule ② (①State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi′an 710075; ②Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029; ③East China Normal University,Shanghai 200062);CHARACTERISTICS OF THE HOLOCENE OPTIMUM IN THE MONSOON/ARID TRANSITION BELT RECORDED BY CORE SEDIMENTS OF DAIHAI LAKE,NORTH CHINA[J];Quaternary Sciences;2006-05
8 Li Baosheng(Department of Geography, South China Normal Gniversity, Guangzhou, Guangdong, 510631)Li Sen, Wang Yue, Dong Guangrong, Jin Heling(Lanzhou Desert Research Institute, Chinese Academy of Sciences, Gansu, 730000)Yan Mancun, Gao Quanzhou(Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangdong,510640)Wang Guiyong(Lanzhou Desert Research Institute, Chinese Academy oj Sciences, Gansu,730000);Geological Age of the Sand and Dust Deposits of the Aqiang Section in the Extremely Arid Region of China[J];Acta Geologica Sinica;1998-01
9 Yan Shun(Xinjiang Institute of Geography. Chinese Academy of Sciences);THE CHARACTERISTICS OF QUATERNARY SPORO-POLLEN ASSEMBLAGE AND THE VEGETATION SUCCESION IN XINJIANG[J];Arid Land Geography;1991-02
10 Mu Gui jin(Xinjiang Institute of Geography,Chinese Acadtmy of Scicnces,Urumqi,China);ON THE AGE AND EVOLUTION OF THE TAKLIMAKAN DESERT[J];Arid Land Geography;1994-03
【Secondary References】
Chinese Journal Full-text Database 3 Hits
1 LI Zhi-zhong1,2,3,LING Zhi-yong1,3,CHEN Xiu-ling1,2,WANG Shao-pu3,CAO Xiang-dong3 ( 1. Geography Science College,Fujian Normal University,Fuzhou,Fujian 350007; 2. Provincial Key Lab of Subtropical Resources and Environment of Fujian,Fuzhou,Fujian 350007; 3. Geography Science and Tourism College,Xinjiang Normal University,Urumqi,Xinjiang 830054 );Late Holocene Climate Changes Revealed by Grain-size Cycles in Takemukul Desert in Yili of Xinjiang[J];Scientia Geographica Sinica;2010-04
2 NIU Guang-ming, QIANG Ming-rui, SONG Lei, LANG Li-li, WANG Li-qiang (Key Laboratory of Western China's Environmental Systems (Ministry of Education), Lanzhou University, Lanzhou 730000, China);Change of Eastern Asian Winter Monsoon Recorded by Aeolian Deposits over the Past 5000 Years at the Southeastern Margin of Qaidam Basin[J];Journal of Desert Research;2010-05
3 YIN Jian-jun1,2,QIN Jia-ming2,LIN Yu-shi2,YANG Yan1,TANG wei1,2(1.Key Laboratory of Eco-environments in Three Gorges Reservoir(Ministry of Education),School of Geographical Sciences,Southwest University,Chongqing 400715,China;2.Institute of Karst Geology,CAGS,Karst Dynamics Laboratory,MLR,Guilin,Guangxi 541004,China);Research progress on the recent 2000 years' climate change revealed by stalagmite record in China[J];Carsologica Sinica;2010-03
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