2004 Vol. 10, No. 3

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MESOZOIC N-S EXTENSION IN THE EASTERN ALTYN TAGH RANGE ON THE NORTHERN MARGIN OF THE QINGHAI-TIBET PLATEAU
CHEN Xuan-hua, AN Yin, George E. GEHRELS, Eric S. COWGILL, Marty GROVE, T. Mark HARRISON, WANG Xiao-Feng, YANG Nong, LIU Jian
2004, 10(3): 193-212.
Abstract (228) PDF (868KB)(10)
Abstract:
Lying in the eastern Altyn Tagh Range along the northern margin of the Qinghai-Tibet Plateau, the >300-km long, E-W-trending Lapeiquan fault is a south-dipping normal fault, with its dip angle as low as <30°.The central segment of the fault is a 30~50 m thick ductile shear zone with a well-dev...
SEISMIC DANGER DIVISIONS BASED ON HYDROGEOCHEMICAL-TECTONIC CHARACTERISTICS ON THE CONTINENT OF CHINA
ZHANG Chun-shan, ZHAN Li-hai, WU Man-lu, ZHANG Ye-cheng, HU Jing-jiang, GAO Qing-zhao
2004, 10(3): 213-226.
Abstract (136) PDF (441KB)(14)
Abstract:
Seismic danger zones on the continent of China are distinguished by taking the main indices of hydrogeochemical fields of hot groundwater and mineral groundwater, tectonic framework and tectonic activities and regularity of historical seismic activities as the main criteria for the division, combine...
3-D DENSITY STRUCTURE AND GRAVITY ANOMALY OF THE WEST-CENTRAL SEDIMENTARY BASIN OF TAIWAN
ZHANG Jian, SONG Hai-bin
2004, 10(3): 227-234.
Abstract (188) PDF (421KB)(10)
Abstract:
The West-central sedimentary basin is one of the important areas for oil-gas exploration in Taiwan.Based on the data of oil wells and gravity surveys, the Kriging insertion equations and the depth-density empirical formula, the authors calculated the 3-D density structure and residual density struct...
EVOLUTIONARY CHARACTERISTICS OF THE BOUNDARY FAULT OF THE WENXI DEPRESSION,SHANDONG,AND ITS CONTROL ON SEDIMENTARY SAND BODIES
ZHOU Xin-gui, SUN Bao-shan, SHAO Zhao-gang, ZHANG Lin-yan
2004, 10(3): 235-244.
Abstract (163) PDF (355KB)(9)
Abstract:
Based on field geological surveys and indoor data processing, the authors have intensively studied the geometric and kinematic characteristics of the major boundary fault (named the Nanliu fault) in the Wenxi depression and the deformation relationship and patterns of the major boundary fault and th...
FEATURES OF PLIOCENE-LOWER PLEISTOCENE SEDIMENTARY FACIES AND TECTONIC EVOLUTION IN THE ZANDA BASIN,NGARI AREA,TIBET
ZHU Da-gang, MENG Xian-gang, SHAO Zhao-gang, YANG Chao-bin, SUN Li-qian, WANG Jian-ping, HAN Tong-lin, HAN Jianen, DU JIan-jun, YU Jia, MENG Qing-wei
2004, 10(3): 245-252.
Abstract (229) PDF (499KB)(9)
Abstract:
The Neogene Pliocene-Quaternary lower Pleistocene strata in the Zanda basin, Ngari area, Tibet, may be divided into the lower Pleistocene Qangzü (Qp1x) Formation and the Neogene upper Pliocene Guge Group (N2gg) and the latter may be further divided into the Pliocene Zanda Formation (N22z) and the Pl...
GEOLOGICAL HAZARDS IN THE AREA FOR THE CONSTRUCTION OF PIPELINES IN THE PROJECT OF DIVERSION OF NATURAL GAS FROM THE WESTERN TO THE EASTERN REGION
LI Zhi-yi, YAN Yu-sen, LEI Hai-ying
2004, 10(3): 253-259.
Abstract (201) PDF (230KB)(17)
Abstract:
The physical geographical and geological environmental conditions in the area for the construction of pipelines in the project of diversion of natural gas from the western to the eastern region are complex and variable.The geological hazards in the area show the regional distribution pattern.With th...
HIGHWAY GEOLOGICAL HAZARDS OCCURRING ON MULTI-STAGE ACCUMULATIONS OF DEBRIS FLOWS——A CASE STUDY OF THE BIETUO SECTION OF THE WEST APPROACH OF THE ERLANG MOUNTAIN TUNNEL,SICHUAN-TIBET HIGHWAY
LI Yu-shu, LI Tian-bin, GAO Guang-yun, CHENG Gang
2004, 10(3): 260-267.
Abstract (301) PDF (290KB)(9)
Abstract:
The main communication lines in western China are mostly located in mountainous areas, where in history there exist multi-stage accumulations of debris flows which have preferable stability and structural strength in the natural state.How to make rational use of this kind of accumulation and avoid o...
RELATION BETWEEN FRACTURE-SCALE FRACTAL DISTRIBUTION AND ITS DAMAGE EVOLUTION
XE Zhi-bin, XIE He-ping
2004, 10(3): 268-275.
Abstract (222) PDF (364KB)(10)
Abstract:
The data provided by the related rock fracture test were reviewed, analyzed and calculated using the methods of fractal geometry and damage fracture mechanics.The results show that the rock damage evolution has better statistical self-similarity, that the fractal dimension of the fracture-scale dist...
GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL SIGNIFICANCE OF INTERMEDIATE AND INTERMEDIATE-ACID VOLCANIC ROCKS IN THE NORTHERN SECTOR OF THE DA HINGGAN VOLCANIC ERUPTION ZONE
ZHAO Shu-yue, HAN Yan-dong, ZHU Chun-yan, GHO Kui-cheng, WANG Jian-min, LIU Bao-shan
2004, 10(3): 276-287.
Abstract (197) PDF (533KB)(9)
Abstract:
Petrological and geochemical studies of intermediate-acid volcanic rocks of the Late Jurassic Jixiangfeng Formation in the northern sector of the Da Hinggan Mountains show that there exist high-Sr and low-Y type volcanic rocks in the area, which are so-called adakitic rocks in the literature.The aut...

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