2003 Vol. 9, No. 3

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2003, 9(3): 193-200.
Abstract (139) PDF (184KB)(6)
Abstract:
MESO-CENOZOIC INTRACONTINENTAL OROGENIC PROCESS IN THE BEIJING AREA——A Case Study Based on Geological Observations from the Ming Tombs to Badaling Mountain
CUI Sheng-qin, WU Zhen-han, MA Yin-sheng, LI Jin-rong, YI Ming-chu, ZHAO Yue, WU Gan-guo, ZHU Da-gang, FENG Xiang-yang
2003, 9(3): 201-219.
Abstract (310) PDF (869KB)(22)
Abstract:
The magnificent Yanshan Mountains, famous for their unique structural features, lie north of the North China Plain. They are the place o f the world-renowned Meso-Neoproterozoic stratotype(formerly called the "Sini an System of Northern China" or the "Sinian Suberathem"), the area of the old est con...
TETHYAN TECTONIC BELT AND GLOBAL LATITUDINAL TECTONIC SYSTEM
QIU Yuan-xi
2003, 9(3): 220-231.
Abstract (231) PDF (438KB)(12)
Abstract:
The eastern segment of Eastern Tethys is located in the present South China Sea and its surrounding areas. As the petrological record of the occeanic crust,the ophiolite belt is distributed like the letter "U". It was formed by contortion of the Tethyan tectonic belt during the collision of the Indi...
ANALYSIS OF ORE-CONTROLLING STRUCTURE OF THE XORKOL BEISHAN Cu-Ag DEPOSIT IN THE NORTHERN ALTUN MARGINAL AREA,NORTHWESTERN CHINA
CHEN Bai-lin, WANG Xiao-feng, YANG Feng, LI Xue-zhi, CHEN Zheng-le, CHEN Xuan-hua
2003, 9(3): 232-240.
Abstract (309) PDF (327KB)(18)
Abstract:
The Xorkol Beishan Cu-Ag deposit,located at the northern side of the Xorkol Corridor at the northern margin of the Altun(Altyn Tagh) Mou ntains,is a hydrothermal deposit controlled by second-order faults in the thrust block of nappe structure.There outcrop the thich-bedded lime stone member and medi...
POTENTIAL OF URANIUM MINERALIZATION IN MESO-CENOZOIC STRATA IN THE NORTHWESTERN JUNGGAR BASIN
LIU Jian, CHEN Zheng-le, ZHANG Hong-xi, HU Jian-min
2003, 9(3): 241-245.
Abstract (256) PDF (151KB)(11)
Abstract:
Parameters of organic matter(Cy),pyrite(FeS2),magnesia (MgO),phosphate(P2O5),iron oxide(Fe2O3,FeO) and Fe3+/Fe2+ play an important role in the formation of in-situ leachable sandstone-type uranium deposits.Comparative study of parameters of sandstone of the primary zone in the ore target in the no r...
TECTONIC CHARACTERISTICS OF THE BAIYANGPING-HUACHANGSHAN ORE BELT,YUNNAN PROVINCE AND ITS ORE-CONTROLLING EFFECT
SHAO Zhao-gang, MENG Xian-gang, FENG Xiang-yang, ZHU Da-gang
2003, 9(3): 246-253.
Abstract (232) PDF (272KB)(6)
Abstract:
The Baiyangping ore belt is located in the northern segment of the Lanping-Simao Indosinian-Yanshanian-Himalayan metallogenic belt.The mi neralization occurred on the basis of the Mesozoic marine to continental carbonate formation and clastic formation intercalated with the volcanic formation,and th...
GEOLOGICAL CHARACTERISTICS OF THE DAYINGEZHUANG GOLD DEPOSIT IN THE JIAODONG AREA AND ITS RESOURCE PROSPECTS AT DEPTH
LI Wei-ge, LI Long-yi, ZHANG Rui-zhong, QIAN Jin, GUO Jun-li
2003, 9(3): 254-260.
Abstract (214) PDF (260KB)(12)
Abstract:
The Dayingezhuang gold deposit in the Jiaodong area,Shan dong Province,is a hidden(to a burial depth of more than 250 m from the surface),mesothermal,alteration-type gold deposit in a fractured zone.It has been mined for more than ten years.Check drilling has revealed that the orebody has a tend enc...
Re-Os AGES OF THE ZHONGJIA TIN POLYMETALLIC DEPOSIT,SOUTHWESTERN FUJIAN, AND THEIR GEOLOGICAL SIGNIFICANCE
ZHANG Da, WU Gan-guo, WU Jian-she, CHEN Xiang-yun
2003, 9(3): 261-267.
Abstract (210) PDF (250KB)(10)
Abstract:
The mineralization age of ore deposits is one of the important subjects in the study of the genesis of ore deposits and it has long been obtained by means of indirect methods.The Re-Os dating technique is an effective means for the direct accurate determination of the model ages of molybdenite and r...
TRIASSIC PALEOGEOGRAPHY AND SEDIMENTARY FACIES OF THE KUQA DEPRESSION,TARIM BASIN
JI Yun-long, DING Xiao-zhong, LI Xi-chen, YU Kai-ning
2003, 9(3): 268-274.
Abstract (207) PDF (275KB)(9)
Abstract:
After the deposition of Late Permian thick-bedded molasses,the Kuqa depression began to enter a stage of development of a closed compressional flexural basin in the Triassic,thus ushering in the stage of development of a Mesozoic foreland basin,when the tectonic framework and style were very differe...
SOME PROBLEMS OF IN-SITU CRUSTAL STRESS MEASUREMENTS
TAN Cheng-xuan, SUN Ye, WANG Lian-jie
2003, 9(3): 275-280,260.
Abstract (429) PDF (219KB)(20)
Abstract:
Measuring data at home and abroad confirm that tectonic stress near the surface is interfered with by several influence factors and is usually overlapped by non-tectonic stress,e.g.stress caused by topography.This paper discusses the problems that need consideration before and after crustal str ess ...
NUMERICAL MODEL OF THE INSTABILITY-FAILURE PROCESS OF THE COAL-BED FLOOR DUE TO CONFINED WATER INRUSH
YANG Tian-hong, TANG Chun-an, LIU Hong-yuan, ZHU Wan-cheng, FENG Qi-yan
2003, 9(3): 281-288.
Abstract (300) PDF (326KB)(7)
Abstract:
In this paper the instability-failure process of floor due to confined water inrush is numerically simulated by using the Coupling System of Flow & Solid in Rock Failure Process Analysis(F-FRPA2D) that has be en recently developed by CRISR,Northeastern University.In this numerical model the flui...

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