2000 Vol. 6, No. 3

  Previous Issue | Next Issue 
Display Method:
A SEMINAR ON ANOMALOUS PRESSURE IN THE CRUST
CHEN Qing-xuan, REN Xi-fei, LU Gu-xian, DONG Shen-bao, LIU Rui-xun, CHEN Jing, WANG Fang-zheng, REN Ji-shun, LI Ting-dong, LIU Dun-yi, ZHAI Yu-sheng, ZHANG Bing-xi, SHAO Li-qin
2000, 6(3): 1-13.
Abstract (290) PDF (426KB)(9)
Abstract:
Papers collected in this volume are focusing on anomalous pressures present in the crust. Some theoretical considerations and calculations of pressures at certain depths are proposed.
The pressure-depth relation can generally be obtained from a certain density-depth distributaion in the region. It is...
ON THE DEPTH OF THE FORMATION OF COESITEBEARING ECLOGITE OF DABIE UHPM ZONE,CENTRAL CHINA
LU Gu-xian, CHEN Jing, DING Ti-ping, LI Xiao-bo, LIU Rui-xun
2000, 6(3): 15-25.
Abstract (206) PDF (418KB)(10)
Abstract:
The plastic deformation of garnet in coesite-bearing eclogite,quartz eclogite and garnet amphibolite of the ultrahigh-pressure metamorphic (UHPM) complex in Yingshan County in the Dabie Mt. is studied by the transmission electron microscope (TEM). It is shown than the garnets have undergone ductile ...
METAMORPHISM OF DABIE MOUNTAINS AND ITS RELATIONSHIP WITH THE COLLISIONAL OROGENY
WEI Chun-jing, CHEN Bin, ZHANG Cui-guang, CHEN Jing
2000, 6(3): 25-38.
Abstract (302) PDF (604KB)(14)
Abstract:
The Dabie orogenic belt can be divided into 5 meta-tectonic units from south to north,i.e.,the northern Yangtze blueschist belt,Susong metamorphic complex,southern Dabie collisional complex,northern Dabie metamorphic complex and northern Huaiyang metamorphic belt. The rocks of these different units ...
ISOTOPIC CONSTRAINTS ON THE FORMATION DEPTH OF ULTRAHIGH PRESSURE METAMORPHIC ROCKS IN THE DABIE REGION
DING Ti-ping
2000, 6(3): 39-44.
Abstract (203) PDF (270KB)(8)
Abstract:
The formation depth of metamorphic rocks in the Dabie ultra-high pressure metamorphic (UHPM) zone is a question attrating attention of geologists in the world. It has some bearing not only on our understanding of formation mechanism and evolution precesses of collision orogenic belt,but also on stud...
CONSIDERATIONS ON DETERMINATION OF THE DEPTH OF GEOLOGICAL PROCESSES
LIU Rui-xun, LU Gu-xian
2000, 6(3): 45-49.
Abstract (173) PDF (208KB)(12)
Abstract:
The method sofar adopted to determine the depth where geological processes occur is to divide the pressure by specific weight (density) of rocks. This method is correct only when the rocks are assumed to be hydrosatic. Actually,rocks from the shallow crust to the deep mantle,are not ideally hydrosat...
A METHOD FOR ESTIMATING THE DEPTH OF PETROGENESIS AND METALLOGENESIS
LU Gu-xian, LIU Rui-xun, WANG Fang-zheng, DING Ti-ping, LI Xiao-bo, CHEN Jing
2000, 6(3): 50-62.
Abstract (229) PDF (542KB)(23)
Abstract:
The method proposes to calculate the hydrostatic pressure by subtracting the tectonic component from the total pressure at a point in the crust. such a pressure is referred to as a tectonic-stress free pressure or a teetonic-stress corrected prossure. In this paper,the depth of the sold mineralizati...
A PRESSURE MODEL FOR ULTRAHIGH-PRESSURE METAMORPHISM
HU Bao-qun, WANG Fang-zheng, XIAO Long
2000, 6(3): 63-68.
Abstract (229) PDF (226KB)(9)
Abstract:
Based on the study on the ultrahigh-pressure metamorphism and the calculation of pressure pervading in the crust,the present paper shows that the pressure causing ultrahigh-pressure metamorphism should include in addition to the load of surrounding rocks also the pressure arising from phase change,a...
OVERPRESSURE SYSTEM IN YINGGEHAI BASIN AND ITS RELATIONSHIP WITH OIL/GAS POOLS
YIN Xiu-lan, LI Si-tian
2000, 6(3): 69-77.
Abstract (244) PDF (357KB)(7)
Abstract:
The Unique geological evolution of the Yinggehai basin resulted in more than three sets of thick muddy deposits. subsequent compaction of the sediments and differential discharge of fluids from the pores led to the existence of large scale overpressure systems. Formation of large amount of hydrocarb...
STUDY OF PLASTIC DEFORMATION OF GARNET AND CALCULATION OF FOSSIL DIFFERENTIAL STRESS
CHEN Jing
2000, 6(3): 78-82.
Abstract (174) PDF (202KB)(12)
Abstract:
Any thermal event that has occurred during and after the formation of rocks can be traced in the rocks themselves. How to search these traces has been the focus of geological research in our country for a long time,and it is also a problem that needs to be solved as soon as possible. In recent years...
DUAL METASOMATISM BETWEEN MAGNETITE AND PYRITE AND ITS IMPLICATIONS
XU He-ling, CHEN Ke-qiao, MA Xing-hua, SUN Zhi-ming
2000, 6(3): 83-89.
Abstract (415) PDF (258KB)(9)
Abstract:
There is convincing mineralogical evidence such as metasomatic pseudomorph and replacement remnants to support that dual replacements have taken place in the Early Paleozoic carbonate rocks form southern part of the Huabei basin. Two kinds of replacements that have proceeded in opposite directions i...

Website Copyright © Journal of Geomechanics  京ICP备18031784号  Total visits：6194501

Supported by: Beijing Renhe Information Technology Co., Ltd.