tailieunhanh - New paleomagnetic results of upper Permian - lower Triassic volcanic sequences from the Hoa Binh area, northwest Vietnam

This result implies that insignificant cumulative displacement has occurred along the Ailao Shan/Red River fault system during the Cenozoic India-Eurasia collision. | Vietnam Journal of Earth Sciences 36 (2014) 413-423 Vietnam Academy of Science and Technology Vietnam Journal of Earth Sciences (VAST) Website: New paleomagnetic results of upper Permian - lower Triassic volcanic sequences from the Hoa Binh area, northwest Vietnam Cung Thuong Chi1, John W. Geissman2, Hoang Van Quy1, Nguyen Thi Phuong Dung1, Nguyen Thi Hoc1 1 Institute of Geological Sciences, Vietnam Academy of Science and Technology Department of Geosciences, University of Texas at Dallas, ROC 21, 800 West Campbell Road, Richardson, Texas 75080-3021, USA 2 Accepted 25 December 2014 ABSTRACT Oriented-core samples (125) from twelve sites collected from the Late Permian-Early Triassic volcanic Vien Nam formation exposed at the Hoa Binh Dam area, northwest Vietnam yield interpretable magnetizations in progressive demagnetization. The characteristic remanent magnetization (ChRM) components carried by magnetite and hematite are successfully isolated from secondary components and reveal a mean, in situ (geographic coordinates) paleomagnetic direction of Decl. = o, Incl. = ( 95 = , k = , N = 9 site mean directions), corresponding to a virtual geomagnetic pole located at = oN, = oE and a paleo-latitude for the study area situated at ~15 oS during the Late Permian to Early Triassic. A comparison of the pole we report in this study with the Late Permian-Early Triassic part of the South China Block apparent polar wander path shows that this volcanic terrane of northwest Vietnam has been close to if not a coherent part of the South China Block since the Late Permian. This result implies that insignificant cumulative displacement has occurred along the Ailao Shan/Red River fault system during the Cenozoic India-Eurasia collision. © 2014 Vietnam Academy of Science and Technology 1. Introduction Southeast Asia consists of a complex assemblage of Gondwana-derived continental blocks that were rifted from .

• Địa Lý
• Vietnam Journal of Earth Sciences
• Upper Permian lower Triassic volcanic sequences
• The Hoa Binh area
• northwest Vietnam
• Insignificant cumulative displacement
• Oriented core samples
• General characteristics of rare earth
• Radioactive elements in Dong Pao deposit
• The natural tap and thermal waters
• Liquid scintillation counter
• Probabilistic seismic hazard assessment for the South Central Vietnam
• Probabilistic seismic hazard assessment
• The South Central Vietnam
• Recent seismotectonic and geodynamic
• Prediction of maximum earthquake magnitude for northern Vietnam region
• The gev distribution
• Maximum earthquake magnitude
• Generalized extreme value distribution
• The earthquake catalog of Northern Vietnam
• Continuous GPS network in Vietnam
• The total electron
• The South East Asian region
• The continuous GPS network
• The South East Asian equatorial ionization anomaly
• An analysis of forest biomass changes
• Geospatial tools and ground survey data
• Yok Don national park
• Central Highlands of Vietnam
• SPOT HRV satellite
• The autumn precipitation
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• Central Vietnam and its East Sea
• Sea surface temperature
• Adaptation plans anticipated
• Construction of initial national quasi geoid model VIGAC2017
• First step to national spatial reference system in Vietnam
• Coordinate transformation parameters
• The WGS 84 ellipsoid
• Abnormal features of oceanographic characteristics
• Upwelling Vietnam waters under impact of El Niño events
• Deeper water layers during
• El Niño phase
• The relation between fault movement potential
• Seismic activity of major faults in Northwestern Vietnam
• Fault Movement Potential
• The nearly horizontal trend
• U Pb detrital zircon geochronology
• Sedimentary rocks in NE Vietnam
• Implication for Early and Middle Devoni an Palaeogeography
• LA SF ICP MS techniques
• The western Himalaya
• Preliminary study on phytogeography
• Dipterocarpaceae Blume family in Vietnam
• Dipterocarpaceae Blume family
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• The soil and water assessment tool and gis
• Cau river basin in Vietnam
• oil and Water Assessment Tool
• Errors in determination of main parameters of earthquake hypocenter
• The national seismic network of Vietnam
• Main parameters of earthquake hypocenter
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• Sea level rise and resilience in the AsiaPacific
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• Vietnam in the period of 1980 2013
• Hot days in north central region
• North Center Region
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• Geological environment changes in mountainous regions
• Geological environment changes
• Debris flows in Vietnam
• High arsenic concentration in groundwater related to sedimentary facies
• The Mekong River Delta
• High arsenic concentration
• AOAC laboratory Vietnamese standard
• Assessment of geomorphic processes and active tectonics
• Con Voi mountain range area
• The hypsometric curve analysis method
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• Uptake capacity of metals by Vetiveria zizanioides
• Uptake capacity of metals
• Dong Xam metal production trade village
• Thai Binh province
• Metal production trade village
• Coralline Ba Ca ratios
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• Con Dao island
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• Simulation of long term variations
• The F2 layercritical frequency f0F2
• The northern tropical crest of ionization at Phu Thuy
• The thermosphere ionosphere electrodynamicsgeneral circulation model
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• Methodology of determining effective porosity
• Longitudinal dispersivity of aquifer
• The application to field tracer injection test in Southern Hanoi
• The groundwater flow
• New discovery of late early ordovician graptolites
• Discussion on stratigraphic sequence of paleozoic sediments
• The Dinh Ca Trang Xa section
• Vo Nhai disctrict
• A digital shoreline analysis system
• Mangrove shoreline changes along
• The Giao Thuy coastal area
• Mangrove shoreline changes and mangrove zoning