A5054716335- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- High-pressure geophysics and materials
- Paleontology and Stratigraphy of Fossils
- Second Language Learning and Teaching
- Polar Research and Ecology
- Geological Studies and Exploration
- EFL/ESL Teaching and Learning
- Geochemistry and Elemental Analysis
- Pleistocene-Era Hominins and Archaeology
- Methane Hydrates and Related Phenomena
- Geological Formations and Processes Exploration
- Mineralogy and Gemology Studies
- Second Language Acquisition and Learning
- Geological and Geophysical Studies
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear materials and radiation effects
- Foreign Language Teaching Methods
- Radioactive element chemistry and processing
- Geological Modeling and Analysis
- Electron and X-Ray Spectroscopy Techniques
- Multimedia Communication and Technology
- Cryospheric studies and observations
Polish Academy of Sciences
2017-2024
Institute of Geophysics
2020-2024
Shikoku (Japan)
2024
National Institute of Polar Research
2013-2023
Curtin University
2013-2023
Swedish Museum of Natural History
2023
University of Oslo
2023
University of Silesia in Katowice
2018-2020
Instytut Nauk Geologicznych
2017-2018
Aichi Gakuin University
2011-2016
Research Article| September 01, 2011 India-Antarctica-Australia-Laurentia connection in the Paleoproterozoic–Mesoproterozoic revisited: Evidence from new zircon U-Pb and monazite chemical age data Eastern Ghats Belt, India Sankar Bose; Bose † 1Department of Geology, Presidency University, Kolkata 700 073, †E-mail: sankar.bose@gmail.com Search for other works by this author on: GSW Google Scholar Daniel J. Dunkley; Dunkley 2National Institute Polar Research, Tachikawa, Tokyo-to 190 8518,...
Abstract In eastern Dronning Maud Land (DML), East Antarctica, there are several discrete, isolated magmatic and high-grade metamorphic regions. These are, from west ( c. 20°E) to east 50°E), the Sør Rondane Mountains (SRM), Yamato–Belgica Complex (YBC), Lützow-Holm (LHC), Rayner (RC) Napier (NC). To understand this region in a Gondwanan context, one must distinguish between Pan-African Grenvillian aged events. Sensitive high-resolution ion microprobe U–Pb zircon ages Nd model for plutonic...
Significance Metallic lead nanospheres have been discovered in ancient (>3.4 Ga) zircon grains from an Archean (2.5 high-grade metamorphic terrain East Antarctica. Native Pb is present as 5–30 nm nanospheres, commonly association with amorphous silica-rich phase, along titanium and aluminium-bearing phases. Together, these phases form nanoinclusions generated during the recovery of crystallinity radiation-damaged under conditions. Once formed, entrapment annealed effectively arrests loss,...
Abstract Integrated structural, petrological and geochronological study on a suite of granulites from the central part Eastern Ghats Belt (EGB), India unveils polyphase tectonothermal evolution. We document (a) M 1 ultrahigh temperature (UHT) metamorphism (∼1000°C at 6.5–8.5 kbar) an anticlockwise P – T trajectory simultaneously with early deformations D –D 2 involving partial melting, (b) cooling down to ∼ 800°C, 6 kbar that produced variety coronae/symplectites (M 1R ), (c) unrelated...
Research Article| March 01, 2010 Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan Kenichiro Tani; Tani * 1Institute for on Earth Evolution, Agency Marine-Earth Science and Technology, Yokosuka 237-0061, *E-mail: kentani@jamstec.go.jp. Search other works by this author on: GSW Google Scholar Daniel J. Dunkley; Dunkley 2National Institute of Polar Research, Tokyo 190-8518, Jun-Ichi Kimura; Kimura Richard Wysoczanski;...
Research Article| December 01, 2009 Sensitive high-resolution ion microprobe analysis of zircon reequilibrated by late magmatic fluids in a hybridized pluton Monika A. Kusiak; Kusiak * 1Polish Academy Sciences, Institute Geological Kraków-Warszawa, Poland *E-mail: mkusiak@twarda.pan.pl Search for other works this author on: GSW Google Scholar Daniel J. Dunkley; Dunkley 2National Polar Research, Tokyo, Japan Ewa Słaby; Słaby Hervé Martin; Martin 3Laboratoire Magmas et Volcans, Observatoire de...
Zircons from two paragneisses (from Mount Sones and Dallwitz Nunatak) one orthogneiss Gage Ridge) in the Tula Mountains, Napier Complex (East Antarctica) were analyzed for U-Pb age, oxygen isotopes, REEs by scanning ion imaging. A large number of zircons all samples are reversely discordant. show an age range 3.0 Ga to 2.5 underwent high-grade metamorphism at both ∼2.8 Ga. Nunatak record detrital ages between 3.5 Ridge multiple groups, with concordant data 3.6 3.3 discordant that form a...
Research Article| September 11, 2018 Generation of I-type granitic rocks by melting heterogeneous lower crust Johannes Hammerli; Hammerli 1Centre for Exploration Targeting, School Earth Sciences, The University Western Australia, Perth, Australia 6009, Search other works this author on: GSW Google Scholar Anthony I.S. Kemp; Kemp Australia2Geosciences, James Cook University, Townsville, Queensland 4811, Toshiaki Shimura; Shimura 3Graduate Sciences and Technology Innovation, Yamaguchi...
Research Article| January 01, 2011 Termination of backarc spreading: Zircon dating a giant oceanic core complex Kenichiro Tani; Tani * 1Institute for on Earth Evolution, Japan Agency Marine-Earth Science and Technology, Yokosuka 237-0061, *E-mail: kentani@jamstec.go.jp. Search other works by this author on: GSW Google Scholar Daniel J. Dunkley; Dunkley 2National Institute Polar Research, Tokyo 190-8518, Yasuhiko Ohara Japan3Hydrographic Oceanographic Department Japan, 104-0045, Geology...
SHRIMP U-Pb analysis of zircon from charnockites and granite the Archaean Ntem Complex, southern Cameroon was conducted to clarify magmatic evolution northern part Congo craton. Zircon morphologies bulk chemistry are consistent with a origin for charnockites. Zircons collected two in complex yield differing ages 3266 ± 5 Ma 2883 11 Ma. A xenocrystic gives single grain age 3477 16 Ma, oldest ever reported craton, while majority zircons same rock 2853 12 In addition, an inherited 3399 6...
Abstract Ion microprobe dating of zircon from meta‐igneous samples the Hitachi metamorphic terrane eastern Japan yields Cambrian magmatic ages. Tuffaceous schist Nishidohira Formation contains ca 510 Ma zircon, overlapping in age with hornblende gneiss Tamadare ( 507 Ma), and meta‐andesite Ma) metaporphyry 505 Akazawa Formation. The latter is unconformably overlain by Carboniferous Daioin Formation, which a granite boulder metaconglomerate 500 Ma. This date overlaps previous estimate for...
We report new petrological data and geochronological measurements of granulites from Vesleknausen in the highest-grade section Lützow-Holm Complex, part Gondwana-assembling collisional orogen East Antarctica. The locality is dominated by felsic to intermediate orthogneiss (charnockite minor biotite gneiss), mafic orthogneiss, hornblende-pyroxene granulite, with deformed undeformed dykes metagranite pegmatite. Pseudosection analysis charnockite system NCKFMASHTO, supported geothermometry was...