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2012年  23卷  第6期

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Two Fresh Types of Eclogites in the Dabie-Sulu UHP Metamorphic Belt, China: Implications for the Deep Subduction and Earliest Stages of Exhumation of the Continental Crust
2012, 14(6). doi: 10.1007/s12583-012-0295-9
摘要:
Two fresh types of eclogites, namely the massive eclogite and foliated eclogite, are discernible in large eclogite bodies surrounded by country rock gneisses from the Dabie (sic)-Sulu (sic) UHP metamorphic zone. They are different in mineral assemblage, texture and structure at various scales. The massive eclogite has a massive appearance with a metamorphic i...
Age, Association and Provenance of the ”Neoproterozoic” Fengshuigouhe Group in the Northwestern Lesser Xing’an Range, NE China: Constraints from Zircon U-Pb Geochronology
2012, 14(6). doi: 10.1007/s12583-012-0291-0
摘要:
The formation time of the Fengshuigouhe (sic) Group in the northwestern Lesser Xing’an Range (sic), NE China, remains controversial owing to the lake of the precise dating data. This article reports zircon U-Pb ages for the leptynite and gneissic granitoids from the Fengshuigouhe Group in the northwestern Lesser Xing’an Range. The aim is to constrain the
On the Role of Dual Active Margin Collision for Exhuming the World’s Largest Ultrahigh Pressure Metamorphic Belt
Timothy M
2012, 14(6). doi: 10.1007/s12583-012-0292-z
摘要:
A wide variety of tectonic models have been invoked to explain the exhumation of the world’s largest ultrahigh pressure (UHP) orogenic belt, the Qinling (sic)-Dabieshan (sic)-Sulu (sic) belt in China, and its correlatives in Korea. Most of these models assume that the orogen contains one main collisional suture between the North and South China...
Bioherm Petroleum Reservoir Types and Features in Main Sedimentary Basins of the South China Sea
2012, 14(6). doi: 10.1007/s12583-012-0293-y
摘要:
It is known from macrocomparisons and microresearches of bioherm reservoirs in main sedimentary basins of the South China Sea through deep-water petroleum explorations and by means of 2D/3D seismic data and a whole-coring core from the Xisha (sic) Islands that there are great differences between deep-sea oil and gas fields in the world and those in the
Abnormal Concentration and Origin of Heavy Hydrocarbon in Upper Permian Coal Seams from Enhong Syncline, Yunnan, China
2012, 14(6). doi: 10.1007/s12583-012-0294-x
摘要:
Coalbed gas (CBG) in Enhong (sic) syncline, eastern Yunnan (sic), China, is characterized by high concentration of heavy hydrocarbon with the highest content of ethane, which is more than 30%. Some previous investigators paid much attention to the abnormal concentration of heavy hydrocarbon in the CBG of Enhong, but few have researched on its origin. ..
The Dauki Fault at the Shillong Plateau-Bengal Basin Boundary in Northeastern India:2D Finite Element Modeling
Md Shofiqul Islam; Ryuichi Shinjo
2012, 14(6). doi: 10.1007/s12583-012-0297-7
摘要:
The Dauki fault is a major fault along the southern boundary of the Shillong plateau that may be a source of destructive seismic hazards for the adjoining areas,including northeastern Bangladesh.In this study,we simulated the present stress distribution and the ongoing convergence deformation within the study area using numerical simulation...
Displacement Field due to Nonuniform Slip along a Long Dip-Slip Fault in Two Welded Half-Spaces
Sunita Rani; Neeru Bala; Ram Chander Verma
2012, 14(6). doi: 10.1007/s12583-012-0296-8
摘要:
The solution of static deformation of two homogeneous,isotropic,and perfectly elastic half-spaces in welded contact due to a long dip-slip fault with uniform slip is well known.The aim of the present article is to obtain the static deformation of two homogeneous,isotropic,and perfectly elastic half-spaces in welded contact due to nonuniform slip along a long dip-slip fault...
Lineament Characterization and Their Tectonic Significance Using Gravity Data and Field Studies in the Al-Jufr Area,Southeastern Jordan Plateau
Awni Batayneh; Habes Ghrefat; Abdullah Diabat
2012, 14(6). doi: 10.1007/s12583-012-0298-6
摘要:
Lineaments in the southeastern Jordan plateau are mapped using gravity data and field studies in order to understand the tectonic origin of these lineaments,especially in relation to the Dead Sea transform (DST) and the Red Sea opening.Four sets trending E-W,NW-SE,NE-SW,and N-S are identified in gravity data.Field studies generally reveal
Assessment of Soil Salinity Risk on the Agricultural Area in Basrah Province,Iraq:Using Remote Sensing and GIS Techniques
Jabbar Mushtak T; Zhou Jingxuan
2012, 14(6). doi: 10.1007/s12583-012-0299-5
摘要:
This study presents an integrated study of expansion process of salinized land in Basrah Province,a typical salt-affected area in southern parts of Iraq,by using geo-information techniques.Satellite images (Landsat TM 1990) and thematic maps (ETM 2003) were used to provide comprehensive views of surface conditions such as vegetation cover and salinization ...
Recovery of Total Heavy Minerals from Badlands of Basanputti Village, Odisha
2012, 14(6). doi: 10.1007/s12583-012-0300-3
摘要:
The badland topography of Basanputti Village, Ganjam District, Odisha, possesses red sediments. The typical red sediment deposit, on average, consists of 71.8% total heavy minerals (THM), out of which 62.1% are ilmenite. The other heavy minerals sillimanite, zircon, garnet, monazite, and pyriboles are in the order of abundance identified. In this present study,
Long-Time Shoreline Monitoring of the Vellar Estuarine Complex, Southeast Coast of India: Using Multispectral Satellite Data
2012, 14(6). doi: 10.1007/s12583-012-0304-z
摘要:
The present study was carried out to track the path of Vellar estuary over a period of 38 years (1970-2008) and also to detect the impact of tsunami on estuarine complex of the Vellar estuary. Visual interpretation techniques were employed by using multispectral data of Landsat TM (1991) and IRS-P6 LISS III (2004, 2006, and 2008) to delineate shoreline ...
Study on Estimation Method of Rock Mass Discontinuity Shear Strength Based on Three-Dimensional Laser Scanning and Image Technique
2012, 14(6). doi: 10.1007/s12583-012-0301-2
摘要:
The estimation of shear strength of rock mass discontinuity is always a focal, but difficult, problem in the field of geotechnical engineering. Considering the disadvantages and limitation of existing estimation methods, a new approach based on the shadow area percentage (SAP) that can be used to quantify surface roughness is proposed in this article.
Temperature of Prograde Metamorphism, Decompressional Partial Melting and Subsequent Melt Fractional Crystallization in the Weihai Migmatitic Gneisses, Sulu UHP Terrane: Constraints from Ti-in-Zircon
2012, 14(6). doi: 10.1007/s12583-012-0303-0
摘要:
In order to constrain temperature during subduction and subsequent exhumation of felsic continental crust, we carried out a Ti-in-zircon thermometer coupled with zircon internal structure and U-Pb age on migmatitic gneisses from the Weihai (sic) region in the Sulu (sic) ultra-high pressure (UHP) metamorphic terrane, eastern China. The Weihai migmatitic gneisses ...
Design and Construction of System for Marine Geophysics Data Sharing Based on WebGIS
2012, 14(6). doi: 10.1007/s12583-012-0302-1
摘要:
A browser/server system has been developed for the purpose of marine geophysical data sharing based on WebGIS technology, which uses MapServer open source system and ORACLE Database Management System. The main steps during development, including system design and implementation, are discussed in this article. The system can provide..