A5084914268- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Mineralogy and Gemology Studies
- Geological Formations and Processes Exploration
- High-pressure geophysics and materials
- Marine and environmental studies
- Geochemistry and Elemental Analysis
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- Radioactive element chemistry and processing
- Paleontology and Stratigraphy of Fossils
- Archaeology and ancient environmental studies
- Hydrocarbon exploration and reservoir analysis
- Clay minerals and soil interactions
- Geotourism and Geoheritage Conservation
- Ancient and Medieval Archaeology Studies
- Heavy metals in environment
- Methane Hydrates and Related Phenomena
- Geomagnetism and Paleomagnetism Studies
- Ancient Mediterranean Archaeology and History
- Ancient Near East History
- Analytical chemistry methods development
- Community Development and Social Impact
- Coal and Its By-products
Bulgarian Academy of Sciences
2015-2024
ETH Zurich
2013-2024
Geological Institute Strashimir Dimitrov
2012-2024
École Polytechnique Fédérale de Lausanne
2024
Geological Institute
2012-2022
Institute of Geochemistry
2020
Engineering (Italy)
2020
University of Alberta
2020
University of Geneva
2009-2014
Mineral Resources
2008
The formation of world class porphyry copper deposits reflect magmatic processes that take place in a deeper and much larger underlying system, which provides the source magmas, as well metal sulphur-charged mineralising fluids. Reading geochemical record this large region, constraining time-scales for creating smaller deposit, are critical order to fully understand quantify lead concentration within these valuable mineral deposits. This study focuses on Bajo de la Alumbrera deposit...
Research Article| August 01, 2011 Zircon crystallization and the lifetimes of ore-forming magmatic-hydrothermal systems Albrecht von Quadt; Quadt Institute Geochemistry Petrology, Department Earth Sciences, ETH Zurich, Clausiusstrasse 25, 8092 Switzerland Search for other works by this author on: GSW Google Scholar Michaela Erni; Erni Klara Martinek; Martinek Melanie Moll; Moll Irena Peytcheva; Peytcheva Christoph A. Heinrich Author Article Information Publisher: Geological Society America...
Dating of zircons in the 100 ka range is possible with LA-ICP-MS applying Th-disequilibrium correction.
Abstract The Apuseni‐Banat‐Timok‐Srednogorie Late Cretaceous magmatic arc in the Carpathian‐Balkan orogen formed on European margin during closure of Neotethys Ocean. It was subsequently deformed into a complex orocline by continental collisions. Cu‐Au mineralized consists geologically distinct segments: Apuseni, Banat, Timok, Panagyurishte, and Eastern Srednogorie segments. New U‐Pb zircon ages geochemical whole rock data for Banat Apuseni segments are combined with previously published to...
Accessory mineral U–Pb geochronology by isotope dilution thermal ionization mass spectrometry (ID-TIMS) requires precise and accurate determinations of parent–daughter ratios.
Abstract Metamorphic and igneous rocks exposed in NW-vergent thrust sheets their autocthonous basement the NE Pontides were dated by U–Pb method using zircons, supported geochemical data for granitic rocks. Two meta-sedimentary units (Narlık schist Karadağ paragneiss) yielded detrital zircon populations of 0.50–0.65 0.9–1.1 Ga, suggesting an affinity with Africa (part Gondwana). The youngest concordant age is Ediacaran but Devonian paragneiss, bracketing paragneiss depositional as...
New age and whole-rock 87Sr/86Sr 143Nd/144Nd isotopic data are used to assess petrogenetic regional geodynamic processes associated with Late Cretaceous subvolcanic intrusions within the sparsely studied Timok Magmatic Complex (TMC) Ridanj–Krepoljin Zone (RKZ) of eastern Serbia. The TMC RKZ form part Apuseni–Banat–Timok–Srednogorie (ABTS) magmatic belt, a Cu–Au mineralized calc-alkaline arc related closure Tethys Ocean that extends through Romania, Serbia, Bulgaria in SE Europe. Zircon ages...
Trace element, Hf, and O isotopic composition U-Pb geochronological data are reported for zircon megacrysts found in miaskitic (zircon, biotite, plagioclase-bearing) nepheline syenite pegmatites from the Finero complex Northeastern part of Ivrea-Verbano Zone, southern Alps. Zircon these was to reach up 9 cm length is characterized by ~100 μm spaced planar fractures different directions. Small volumes highly evolved alkaline melts intruded into lower crust were emplaced within amphibole...
The late Alpine evolution of the Rhodope Massif in southern Bulgaria and northern Greece involved postcollisional extension, which generated detachment faults, syndeformational sedimentary basins, exhumation a large metamorphic core complex composed gneisses marbles: Central Rhodopian dome. Closely associated with this complex, subvolcanic rhyolite dikes extrusive rocks were emplaced, shortly followed by major swarms epithermal to mesothermal Pb-Zn veins carbonate replacement orebodies....
Abstract Single zircons from several porphyry dykes bracketing the time of formation Elatsite Cu-Au deposit (Bulgaria) were dated by high-precision U-Pb isotope analysis, using thermal ionization mass spectrometry (TIMS). On basis cross-cutting relationships, and mineralogy geochemistry igneous altered rocks, five dyke units are distinguished. The earliest is associated with, overprinted by, main stage ore-related veining potassic alteration. analyses yield a mean 206 Pb/ 238 U age 92.1 ±...