2005 Vol. 11, No. 2

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INHERITING AND DEVELOPING LI SIGUANG'S THOUGHT ON EARTHQUAKE PREDICTION
ZHAO Wen-jin
2005, 11(2): 97-109.
Abstract (235) PDF (373KB)(14)
Abstract:
This paper reviews Li Siguang(J.S.Lee)'s thought on earthquake prediction and emphasizes the great significance of the view of following China's own road to carry out geostress observation and research and investigation of the active tectonic systems proposed by Li Siguang.According to the practice ...
TRIGGERING OF LOCAL EARTHQUAKES IN THE QAIDAM BASIN BY THE SUMATRA EARTHQUAKE
MA Yin-sheng, SI Da-nian, AN Mei-jian, WANG Xiao-feng, HUO Guang-hui, LI Guo-qi, YIN Cheng-ming, ZHANG Xi-juan, SHI Wei, DU Jian-jun
2005, 11(2): 110-116.
Abstract (179) PDF (452KB)(9)
Abstract:
A magnitude 9.0 earthquake,which was the strongest earthquake in the past four decades,occurred just off the northwest coast of Sumatra,Indonesia,on December 26,2004.It caused serious damage and casualties.This large earthquake left as long as more than 1000 seconds of records at the Shizigou seismo...
CHARACTERISTICS OF RADON ANOMALIES IN WATER ON THE NORTHEASTERN MARGIN OF THE QINGHAI-TIBETAN PLATEAU AND THEIR RELATIONS TO EARTHQUAKES
LI Zuo-tang, HE Shao-lin, LIU Bin, YIN Zhi-gang, LI Qiu-hong, DANG Hong
2005, 11(2): 117-128.
Abstract (162) PDF (375KB)(10)
Abstract:
By combining the geomechanical point of view and active fault distribution with the earthquake precursor phenomena,the paper discusses the regional characteristics of the hydro-geochemical seismic precursor anomalies on the northeastern margin of the Qinghai-Tibetan plateau,e.g.the background level ...
APPLICATION OF SEISMIC PHASE ANALYSIS IN THE INTERPRETATION OF DEEP SEISMIC REFLECTION DATA
LIU Kui, ZHAO Wen-jin
2005, 11(2): 129-134.
Abstract (182) PDF (916KB)(9)
Abstract:
By a meticulous study of INDEPTH deep seismic reflection profiles,the authors found that not only the strong reflection line-ups of the deep seismic reflection profiles may reflect the structure of the deep interior of the crust but also the seismic phases in the upper,middle and lower crust have so...
RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN
LI Jin-suo, PENG Hua, Cui Wei, MA Xiu-min, YANG Shao-xi, LIAO Jian-she
2005, 11(2): 135-144.
Abstract (260) PDF (452KB)(40)
Abstract:
Rock stress state in situ is determined by the hydrofracturing method for rock stress measurement in a railway tunnel in northwestern Yunnan.According to the distribution features of the rock stress,combined with the mechanical parameters of the tunnel wall rocks,the stress filed in the tunnel area ...
GEOLOGICAL CHARACTERISTICS OF THE HONGYEJIA THRUST SHEAR ZONE NORTHWEST OF HEIHE IN THE HEILONGJIANG RIVER VALLEY AND ITS SIGNIFICANCE
FU Jun-yu, YU Rong-wen, SONG Ya-qin, ZHANG Jin-lian
2005, 11(2): 145-152.
Abstract (316) PDF (286KB)(8)
Abstract:
The Hongyejia thrust shear zone northwest of Heihe in the Heilongjiang River valley extends in an E-W direction in the junction between the southern side of the Luomahu median uplift and the northern margin of the Paleozoic Handaqi fold belt.According to the degree of deformation the north,central a...
CHARACTERISTICS OF TECTONIC DEFORMATION OF THE YUESHAN PLUTON ON THE SOUTHERN MARGIN AND ITS GEOLOGICAL SIGNIFICANCE
LIN Ci-luan, LIU Qiang, YANG Kun-guang, MA Chang-qian
2005, 11(2): 153-159.
Abstract (141) PDF (514KB)(7)
Abstract:
Zircon U-Pb ages of the Yueshan pluton in eastern Hubei indicate that this pluton is a granite body resulting from anatexis of an old granite body and its intrusion in the middle Yanshanian(139 Ma).The depth of emplacement of this granite body obtained by the hornblende geobarometer is up to 24.5 km...
A METHOD FOR RESTORATION OF THE ORIGINAL LAYER THICKNESS BY USING FRACTURE BOUDINS
XU Yun-feng, ZENG Zuo-xun, WU Wu-jun
2005, 11(2): 160-163.
Abstract (152) PDF (156KB)(9)
Abstract:
Fracture boudins are the result of combined discontinuous deformation of competent layers and continuous deformation of ductile layers.Take for example the fracture boudins occurring at Maquegou,Tieshan,Hubei,a new method of calculating the finite strain of a rock layer and restoring the original th...
(U-Th)/He DATING TECHNIQUE AND THERMOCHRONOLOGY AND THEIR APPLICATIONS IN GEOLOGY
YANG Mei-ling, CHEN Xuan-hua
2005, 11(2): 164-171.
Abstract (238) PDF (314KB)(9)
Abstract:
In the paper the(U-Th)/He dating technique and thermochronology are introduced and the theoretical basis and technical requirements are dealt with.In addition,the applications of the (U-Th)/He dating technique in studies of small-magnitude exhumation,paleogeomorphology and high-precision dating of y...
SEDIMENTARY EVOLUTION OF THE NAM CO BASIN,TIBET,SINCE 116ka BP AND QINGHAI-TIBET PLATEAU UPLIFT
ZHU Da-gang, MENG Xian-gang, ZHAO Xi-tao, SHAO Zhao-gang, MA Zhi-bang, YANG Chao-bin, WU Zhong-hai, WANG Jian-ping
2005, 11(2): 172-180.
Abstract (222) PDF (322KB)(9)
Abstract:
U-series isochron dating of lacustrine and lakeshore deposits shows that six lake terraces below 48m above lake level and highstand lacustrine deposits from 48 to 139.2m above lake level have formed along the banks of the Nam Co since 116ka BP.Three sedimentary facies may be distinguished.Their evol...
THE AGE OF LATE CENOZOIC MOLASSE IN THE FRONT OF THE WESTERN KUNLUN,XINJIANG AND ITS SIGNIFICANCE
LI Xi-chen, WANG Yong, DING Xiao-zhong
2005, 11(2): 181-186.
Abstract (170) PDF (203KB)(6)
Abstract:
Late Cenozoic sediments in the Kokyar section in the front of the West Kunlun record the uplift process of the Qinghai-Tibet Plateau.Paleomagnetic study shows that the molasse in the front of the West Kunlun formed in the late Miocene to early-mid Pliocene,reflecting that a rapid uplift process took...
MAIN MINEROGENETIC SERIES AND METALLOGENIC CHARACTERISTICS ON HAINAN ISLAND
LIAO Xiang-jun, WANG Ping-an, DING Shi-jiang, Huang Xiang-ding, DONG Fa-xian, LIU Xiao-chun, LEI Wei-zhi
2005, 11(2): 187-194.
Abstract (299) PDF (1164KB)(12)
Abstract:
Hainan Island contains abundant mineral resources and the metallogeny and mineralogenetic series on the island display many similarities to those in South China or the Nanling region but also have their own features.The best example is that the mineralization intensity of the Indosinian mineralogene...
Celebrating the 40th Anniversary of the Discovery of the Fossil “Yuanmou Man” in Yuanmou County
2005, 11(2): 195-196.
Abstract (231) PDF (99KB)(5)
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