1998 Vol. 4, No. 4

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ON TECTONOCLIMATIC CYCLE OF QUASI PERIOD OF 1.2Ma IN LATE CENOZOIC
WU Xihao, WANG Sumin, AN Zhisheng, JIANG Fuchu, XIAO Huaguo, SUN Donghuai, XUE Bin
1998, 4(4): 1-11.
Abstract (253) PDF (463KB)(18)
Abstract:
The tectonoclimatic cycle which states that the climate is determined by tectonic movement is different from Milankovich's glacioclimatic cycle.However,both of them are controlled by the Earth's orbit.On the basis of the late Cenozoic geological records in the Qinghai-Xizang (Tibet) Plateau and the ...
ON MANGSHAN LOESS STRATIGRAPHY IN CHINA CENTRAL PLAINS
JIANG Fuchu, WU Xihao, SUN Donghuai, XIAO Huaguo, WANG Sumin, AN Zhisheng, TIAN Guoqiang, LIU Ke, YIN Weide, XUE Bin
1998, 4(4): 12-18.
Abstract (282) PDF (333KB)(19)
Abstract:
The Zhaoxiayu loess section in Mangshan Yuan which is located at the transitional zone between the North China Plains and the Loess Plateau is typical of the loess stratigraphy in China Central Plains.The section is exposed from the top of Mangshan Yuan to the valley bottom of the Huanghe River,the ...
PRELIMINARY STUDY OF OSL DATING OF THE MALAN LOESS AT MANGSHAN PLATEAU, ZHENGZHOU,HENAN PROVINCE
ZHAO Hua, JIANG Fuchu, LU Yanchou
1998, 4(4): 19-29.
Abstract (303) PDF (496KB)(13)
Abstract:
Twenty-four loess samples collected from the Malan loess of a thickness of 87m,at Zhaoxiayu section (34° 58'N and 113° 22'E) in Mangshan hill,Henan province,have been dated for the fine grains using IRSL,with a wavelength of 340-480nm,and GLSL,with a wavelength of 340±25nm,in an automated Daybreak 1...
VEGETATION AND ENVIRONMENT DURING THE LATE PLEISTOCENE IN LOESS PLATEAU,CHINA
SUN Jianzhong, KE Manhong, WEI Mingjian, ZHAO Jingbo, LI Bingcheng
1998, 4(4): 30-41.
Abstract (295) PDF (453KB)(10)
Abstract:
We have worked out quite a few pollens and spores from the commonly spore pollen poor loess,and first plotted some concentration pollen-spore diagrams of the loess strata.The evolution of vegetation and the corresponding climate in time and space in the region has been brought to light by an analysi...
A PRELIMINARY STUDY ON THE RELATION BETWEEN VOLUMETRIC WEIGHT OF LOESS AND PALEOSOL AND MONSOON CLIMATE CHANGE
XIAO Huaguo, WU Xihao, JIANG Fuchu, TIAN Guoqiang, LIU Ke, YIN Weide
1998, 4(4): 42-45.
Abstract (315) PDF (190KB)(8)
Abstract:
Taking Zhaoxiayu section,Mangshan,Zhengzhou as an example,this paper has studied the volumetric weight of loess-palaeosol sequences and its relation with susceptibility as well as its grain size.It is shown that volumetric weight bears an evident positive correlation to the summer monsoon variations...
CLIMATIC INSTABILITY CHARACTERISTIC IN LOESS PLATEAU DURING THE LAST INTERGLACIAL AGE
LI Zhenghua, YE Hao, CHEN Yun, WANG Yuhai, ZHANG Junpai
1998, 4(4): 46-49,75.
Abstract (142) PDF (238KB)(5)
Abstract:
Ice Core information of EEC Greenland Ice Plan(GRIP) has revealed the rapid climatic change during the last interglacial age. However, no evidence of this change was found in the United States Greenland Icecap Plan (GISP2).The study of substitutive paleo climatic index from several sections in Loess...
PALAEOMAGNETIC RECORDS FROM SHUINAN CAVE SEDIMENTS, GUILIN AND ITS BEARING ON PALAEOCLIMATIC CHANGES
LI Bin, FRANK Hauge, REIDAR Lovlie, STEIN-Erik Lauritzen, YUAN Daoxiao, LIN Yushi, ZHANG Meiliang
1998, 4(4): 50-57.
Abstract (255) PDF (346KB)(5)
Abstract:
A detailed palaeomagnetic study of a 2.5m thick section of cave sediment has been made in order to retrieve a record of palaeoenvironmental change in Guilin area. The palaeomagnetic results and geological evidence show that the sediments might have been deposited during the Jaramillo Polarity subchr...
SPORE-POLLEN RECORDS AND TENTATIVE PALEOCLIMATE RECONSTRUCTION IN TAIBAI MOUNTAIN IN THE LAST 1000 YEARS
TONG Guobang, WU Xihao, TONG Lin, XIA Huaguo
1998, 4(4): 58-63.
Abstract (382) PDF (263KB)(7)
Abstract:
The spore pollen records and time sequence of the paleoclimate parameters at Foyechi Pond of Taibai Mountain reveal the character of Little Ice Age and Medieval Warm Period.Little Ice Age spans from 1420 AD to 1920 AD.The annual mean temperature in January and July during this period has shown consi...
EVOLUTION OF PALEOCLIMATE AND PLANT COMMUNITY IN THE LAST 800 ka B P IN DATONG AREA
FAN Shuxian, TONG Guobang, ZHENG Hongrui
1998, 4(4): 64-68.
Abstract (270) PDF (244KB)(9)
Abstract:
A sporopollen analysis of the Dongshuitou section, Xiaobeizhuang section and Nansigou section of the Heishan hill, Datong, Shanxi, shows that the vegetation since 800 ka B P has gone through four stages developing from forest through sylvosteppe and steppe to desertsteppe, Corresponding to the chang...
THE PALAEOCLIMATIC EVOLUTION OF THE YELLOW RIVER SOURCE AREA SINCE 130ka B P
ZHANG Yufang, ZHANG Junpai, XU Jianming, LIN Fang
1998, 4(4): 69-75.
Abstract (159) PDF (328KB)(7)
Abstract:
By a comprehensive analysis of the proxy indices of climate such as readily soluble salt and spore-pollen of borehole profiles in Dougeyong Basin,the palaeoclimatic evolution pattern of the Yellow River source area since 130 ka B P has been revealad:1.From 130 ka B P to 110 ka B P,it was cold and dr...
SEDIMENTARY CHARACTERISTICS AND CLIMATIC EVOLUTION OF CORE HQ IN HEQING BASIN YUNNAN PROVINCE
JIANG Xuezhong, WANG Sumin, YANG Xiangdong
1998, 4(4): 76-81.
Abstract (121) PDF (282KB)(8)
Abstract:
The environment evolution history of the Heqing Basin since 600 ka B P has been established based on the analysis of the colour,granularity,stratification and lithological assemblage of the sediments from the HQ core in combination with the study of the magnetic stratigraphy,susceptibility,content o...
ABRUPT FORMATION OF THE CHARHAN SALT LAKE AND THE MEGAEVOLUTION OF THE EARTH SURFACE SYSTEM-ON THE BASIS OF OSTRACODA
WANG Qiang
1998, 4(4): 82-87.
Abstract (251) PDF (303KB)(7)
Abstract:
Based on the study on Ostracoda collected from a total of six drilling holes in the Charhan lake area,Qinghai Province,four ostracods assemblages indicative respectively of Saline,brackish, fresh-water and swamp facies have been recognized.It was found that since 0.78 Ma B P the area was characteriz...
CHRONOLOGICAL STUDIES ON ACTIVE FAULTS AND GROUND FISSURES IN GUANZHONG AREA, SHAANXI PROVINCE,CHINA
SUN Jianzhong, ZHANG Jingzhao, PENG Jianbing, ZHANG Jun, LI Bingcheng
1998, 4(4): 88-97.
Abstract (330) PDF (400KB)(9)
Abstract:
12 Thermoluminecence datings of the fault gouge and the adjoining cleaved loess of the area gives an age of 20-240 ka B P.It shows that the faults have been active during the late middle pleistocene to Late Pleistocene.Geomorphological and geological evidences are provided to show the alternation of...

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