TAILIEUCHUNG - U-Pb detrital zircon geochronology of sedimentary rocks in NE Vietnam: Implication for Early and Middle Devoni-an Palaeogeography

We present detrital zircon U-Pb analytical results from two samples, the Van Canh and the Van Huong Formations (east Red River Basin). Zircons were analyzed for U, Th, and Pb isotopes by LA-SF ICP-MS techniques. The youngest zircon of each formation provides maximum ages of sedimentation at ± Ma and ± Ma. The zircon cluster of both samples supports the postulated position of NE Vietnam close to the western Himalaya. | Vietnam Journal of Earth Sciences, 39(4), 303-323, DOI: Vietnam Academy of Science and Technology Vietnam Journal of Earth Sciences (VAST) U-Pb detrital zircon geochronology of sedimentary rocks in NE Vietnam: Implication for Early and Middle Devonian Palaeogeography Königshof P.*1, Linnemann , Ta Hoa Phuong3 1 Senckenberg Research Institute and Natural History Museum, Senckenberganlage 25, 60325 Frankfurt, Germany 2 Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, GeoPlasma Lab, Königsbrücker Landstraße 159, 01109 Dresden, Germany 3 Hanoi National University, 334 Nguyen Trai Str., Thanh Xuan Dist., Hanoi, Vietnam Received 18 April 2017. Accepted 27 July 2017 ABSTRACT Rocks of the Do Son Peninsula in NE Vietnam are mainly composed of Palaeozoic siliciclastics. The overall sedimentary record represents fluvial to deltaic prograding deposits close to a shoreline. We present detrital zircon U-Pb analytical results from two samples, the Van Canh and the Van Huong Formations (east Red River Basin). Zircons were analyzed for U, Th, and Pb isotopes by LA-SF ICP-MS techniques. The youngest zircon of each formation provides maximum ages of sedimentation at ± Ma and ± Ma. The zircon cluster of both samples supports the postulated position of NE Vietnam close to the western Himalaya. Keywords: U-Pb detrital zircon; Palaeogeography; Terrane; Van Huong; Van Canh Formations; Vietnam. ©2017 Vietnam Academy of Science and Technology 1. Introduction1 Southeast Asia is composed of a complex puzzle of various terranes (Figure 1) which were rifted from Gondwana during the Early Palaeozoic through the Jurassic times (. Metcalfe, 1984; Burrett and Strait, 1985, 1987; Burrett et al., 1990; Metcalfe, 2011; Usuki et al., 2013). From the Palaeozoic to the Cretaceous several major terranes, including the South China, North China, Indochina, .

• Địa Lý
• Vietnam Journal of Earth Sciences
• 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
• 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
• Upper Permian lower Triassic volcanic sequences
• The Hoa Binh area
• northwest Vietnam
• Insignificant cumulative displacement
• Oriented core samples
• 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
• Tropical cyclone activity
• 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
• Preliminary study on phytogeography
• Dipterocarpaceae Blume family in Vietnam
• Dipterocarpaceae Blume family
• Tropical and or slightly passing
• The Mekong River deltas
• Impacts of climate change on erosion and water flow
• 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
• The seismic stations
• The previous studies
• Sea level rise and resilience in Vietnam
• Sea level rise and resilience in the AsiaPacific
• Sea level rise and resilience
• Climate change induced sea level rise
• Spatial distribution of hot days in north central region
• Vietnam in the period of 1980 2013
• Hot days in north central region
• North Center Region
• Debris flow hazard in relation
• 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
• The hypsometric curve
• 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
• Luminescent line records
• Con Dao island
• Mekong river runoff
• Bright luminescent lines
• 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
• Long term variations
• 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