2001 Vol. 7, No. 3

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TECTONIC ENVIROMENTS OF MAGMATISM IN EARLY PALEOZOIC IN THE NORTH ALTYN TAGH, CHINA
CHEN Xuan-hua, WANG Xiao-feng, YANG Feng, CHEN Zheng-le, CHEN Bai-lin, WANG Ke-zhuo
2001, 7(3): 193-200.
Abstract (173) PDF (351KB)(6)
Abstract:
The North Altyn Tagh is located at the northewst area to Altyn Fault between Tarim and Qaidam Basins. Granitoids from this area formed mainly in Ordovician,and are classified as calc alkaline based on alkaline-lime index,and metaluminous and peraluminous on Shand's index. I and A-types are the princ...
Cu-Au ENRICHMENT AND MINERALIZATION IN ALTYN TAGH
WANG Xiao-feng, CHEN Xuan-hua, CHEN Zheng-le, CHEN Bai-lin, YANG Feng, WANG Ke-zhuo, ZHANG Li-rong, YUAN Jia-yin
2001, 7(3): 201-207.
Abstract (283) PDF (311KB)(10)
Abstract:
The Cu-Au enrichment and mineralization is studied here. It is concluded that the different order structures in Altyn Tagh fault system controlled the spatial distribution of metallogenic belts,ore fields and ore deposits. Regionally,it is divided into north Altyn Tagh gold-copper-iron multi-metal m...
THE CHARACTERISTICS OF ROCK MAGNETIC FABRIC AND ITS RELATIONSHIP TO GOLD MINERALIZATION IN SAWAYAERDUN GOLD DEPOSIT, XINJIANG
CHEN Xuan-hua, MA Tian-lin, SUN Li-qian, ZHOU Jian-hai, ZHANG Xin-li
2001, 7(3): 208-216.
Abstract (242) PDF (347KB)(10)
Abstract:
The magnetic fabric characteristics and its relationship to the gold mineralization in Sawayaerdun gold deposit,Xinjiang,China,are reported here. The data given here show compression in NW-SE direction and sinistral shearing vertical to this direction. There are contraction-type and flaser-type stra...
GENETIC TYPE CHARACTERISTICS AND EXPLORATION OF GOLD DEPOSIT IN BEISHAN AREA, GANSU PROVINCE
CHEN Bai-lin, WU Gan-guo, YE De-jin, LIU Xiao-chun, SHU Bin, YANG Nong
2001, 7(3): 217-223.
Abstract (352) PDF (250KB)(45)
Abstract:
There occurs a lot of gold deposits which belong to three genetic types:ductile shear zone-type,magmatic-hydrothermal type and marine-volcanic type.Source materials of gold deposits in the area are derived mainly from the metamorphic rocks,Variscan intermediate-acid intrusive rock,and marine volcani...
THE CHARACTERISTICS OF NEOGENE SERTENGSHAN XIETIESHAN OBLIQUE THRUST FAULT IN THE NORTHERN MARGIN OF QAIDAM BASIN
WANG Gen-hou, RAN Shu-ming, LI Ming
2001, 7(3): 224-230.
Abstract (280) PDF (258KB)(10)
Abstract:
A Neogene left-lateral oblique turst fault-Sertengshan-Xitieshan oblique trust zone is recognized in the northern margin of Qaidam basin based on the analysis of structures of the area.This oblique trust fault zone with northwestern -southeastern trending consists of fault gouge,fault breccia and fa...
GEOLOGICAL CHARACTERISTICS OF THE METAMORPHIC CONGLOMERATE IN SINIAN STRATIGRAPHY IN THE LUODING AREA, THE WESTERN GUANGDONG
KUANG Yong-guang, HUANG Ji-chun, XIAO Si-ming, ZHUO Wei-hua
2001, 7(3): 231-237.
Abstract (266) PDF (320KB)(9)
Abstract:
Based on the study of petrology,mineralogy,microelements,palaeontology and geological occurrence characteristics,the authors hold that the thick-beded metamorphic conglomerate in Sinian strata in Laoshouxia,Luoding area of westren Guangdong province,is a sedmental basal conglomerate with simple comp...
THE THERMAL STRUCTURE OF MAIN SEDIMENTARY BASINS IN THE NORTHERN MARGIN OF THE SOUTH CHINA SEA
ZHANG JIAN, SONG Hai-bin
2001, 7(3): 238-244.
Abstract (211) PDF (279KB)(11)
Abstract:
Geothermal study,for main sedimentary basins of the northern margin of the South China Sea,reveals that the distribution of temperature at depth is different.Especially,the constitutions of heat flow among these basins are not uniform with respect to each other.Calculation shows that in Preal River ...
THE METALLOGENETIC STRESS FIELD AND RECONSTRUCTION OF DYNAMIC MECHANISM IN FUSHAN GOLD FIELD, SHANDONG
LIU Du Juan, GUO Tao, LU Gu-xian
2001, 7(3): 245-253.
Abstract (225) PDF (383KB)(13)
Abstract:
The space distributions of differential stress and principal stress in Fushan gold field are got from measuring tectonic differential stress value.Results show that the gold orebodies are always located in the areas where the tectonic stress value varies highly,not the minimum or maximum.Based on st...
RESEARCH AND PRACTICE ON TECTONIC STRESS FIELD
SUN Ye, TAN Cheng-xuan
2001, 7(3): 254-258.
Abstract (313) PDF (156KB)(37)
Abstract:
The study of tectonic stress field,which was founded by J.S.Lee,can be divided into the following two periods:①initial research period(1926-1966),which focuses on the tectonic stress fields of some typical structural patterns by the analysis of stress states of structural features.②in situ measureme...
STRESS MEASUREMENT OF ANQING COPER MINING
DONG Cheng, WANG Lian-jie, YANG Xiao-cong, WANG Hong-cai, WANG Wei
2001, 7(3): 259-264.
Abstract (225) PDF (188KB)(8)
Abstract:
In this paper, the results of rock stress mesurement of -580m level by hollow inclusion gauge at Anqing coper mine are introduced, the characteristics of stress distribution are discussed. The mesurement results show that the magnitude of the maximal principle stress is 24MPa, its orientation is NE ...
THEORETICAL ANALYSIS OF RELATIONSHIP BETWEEN STRESS AND STRAIN IN CONSIDERATION OF CONFINING PRESSURE AND PORE PRESSURE OF ROCK SAMPLE
WANG Xue-bin, PAN Yi-shan
2001, 7(3): 265-270.
Abstract (332) PDF (229KB)(11)
Abstract:
Based upon shear strain gradient plastic theory of rock deformation localization, it is assumed that the failure pattern of rock in the shear band is shear failure. The confining pressure and the pore pressure are involved in the model and a theoretical stress strain relationship is obtained. The re...
THE STUDY OF FINITE ELEMENT SIMULATING OF SEEPAGE IN THE UNDERGROUND ENGINEERING
LI Jie, LI Qiang
2001, 7(3): 271-277.
Abstract (336) PDF (244KB)(9)
Abstract:
In the underground engineerings of waterpower, petroleum and traffic, the problem of seepage often happens. If it is not deal with correctly, worse stress will be induced, which willinfluence the stability of structure. Based on the model of unsaturated seepage, the analysis of unsteady seepage is a...

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