Zircon geochronology
ELA ICP MS U Pb zircon geochronology of regional volcanism hosting the Bajo de la Alumbrera Cu Au deposit: implications for porphyry related mineralization
... high-temperature geochronology of these deposits being determined using the K–Ar or 40 Ar/ 39 Ar techniques (see McDougall and Harrison ...U–Pb zircon geochro- nology has confirmed that the magmatic history ...
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Detrital zircon geochronology and evolution of the Nacimiento block late Mesozoic forearc basin, central California coast
... Cretaceous zircon in Nacimiento block strata of Upper Albian–Cenomanian age is accompanied by a signif cant component of Jurassic zircon of 170–157 Ma age, which could have been derived from Middle Jurassic ...
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Mapping and Zircon Geochronology of the Lyon Inlet Boundary Zone, Nunavut; a Crustal Scale Break in the Churchill Province
... for geochronology was carried out in an effort to determine the final stages of metamorphic activity and mineral fabric development in the Lyon Inlet Boundary Zone for the purpose of regional reconstruction of ...
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U Pb detrital zircon geochronology of the lower Danube and its tributaries; implications for the geology of the Carpathians
... Ducea, M.N. and Giosan, L. and Carter, Andrew and Stoica, A.M. and Relu, D.R. and Balica, C. and Balintoni, I. and Filip, F. and Petrescu, L. (2018) U-Pb detrital zircon geochronology of the lower Danube ...
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Chemical abrasion applied to SHRIMP zircon geochronology: An example from the Variscan Karkonosze Granite (Sudetes, SW Poland)
... studies. Zircon is by far the most commonly used mineral in U–Pb ...the zircon chronometer however, it has long been recognized that the U–Pb isotope system may be disturbed by a process of Pb-loss causing ...
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Chemical Abrasion Applied to LA ICP MS U Pb Zircon Geochronology
... annealed zircon reference materials, including Plešovice, has previously been documented ...used zircon reference ...treated zircon reference materials ...of zircon since down-hole ...
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Geochemistry and U_Pb zircon geochronology of the Virgin Islands batholith, British Virgin Islands
... Four samples from the batholith were selected for zircon U/Pb geochronology. Samples were crushed using a steel jaw crusher and a disc mill. Zircon was separated by density, using a water table and ...
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Detrital zircon geochronology of the Grenville/Llano foreland and basal Sauk Sequence in west Texas, USA
... In west Texas, exposures of Precambrian rocks are restricted to the Franklin Mountains north of El Paso, and the region around Van Horn (Fig. 2). The former contains a metasedi- mentary succession ~1200 m thick (Fig. 3), ...
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U-Pb zircon geochronology of high-grade charnockites – exploration of pre-Mesoproterozoic crust in the Mazury Complex area
... the zircon in- ternal domains with weak luminescence, ...amorphic zircon, were formed between ...new zircon domains may grow via solid-state (partial) recrystalli- sation ...new zircon zones ...
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The transition from Pangea amalgamation to fragmentation: Constraints from detrital zircon geochronology on West Iberia paleogeography and sediment sources
... detrital zircon data from clastic rocks of SW Iberia imply that during the late Carboniferous and early Permian, the OMZ was uplifted relative to the ...detrital zircon age data also constrain the maximum ...
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Zircon geochronology reveals polyphase magmatism and crustal anatexis in the Buchan Block, NE Scotland : implications for the Grampian Orogeny
... Pb zircon age of 493 2 Ma for a subduction-related gabbro from the Tyrone Igneous Complex, Ireland, indicates subduction at or near the Laurentian margin before 490 Ma (Draut et ...Pb zircon ages of 490 3 ...
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Quantifying episodic erosion and transient storage on the western margin of the Tibetan Plateau, upper Indus River
... U-Pb zircon geochronology, and bulk Nd and Sr isotope geochemistry from modern river sediments that provides constraints on spatial patterns of sediment production and transport in the Zanskar ...Prevalent ...
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Thesis
... either zircon geochronology does not accurately date the age of emplacement, or if the Mount Aetna pluton was incrementally assembled over a period that spanned the eruption of the Badger Creek ...
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1.8 billion years of detrital zircon recycling calibrates a refractory part of Earth’s sedimentary cycle
... detrital zircon record from the northern Cordillera of North America provide exceptional context to explore the dynamics of sediment erosion and redeposition over deep geologic time (Table 1; Figs 1 and ...
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Thermochronology of mineral grains in the Red and Mekong Rivers, Vietnam: provenance and exhumation implications for Southeast Asia
... large-scale budget for each river on the basis of the mica cooling ages (Figure 7). In this case we divide the grains into the following categories: Himalayan (<50 Ma), Transhimalayan (50–150 Ma), Indosi- nian – Young ...
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The Effect of Zircon on Long-Time Corrosion Resistance of Alumina
... and zircon, and the temperature of sintering were investigated for determining the optimum composition and sintering conditions to obtain a high corrosion resistance ...of zircon into alumina based ...
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The origin of the Palaeoproterozoic AMCG complexes in the Ukrainian Shield : new U Pb ages and Hf isotopes in zircon
... Khlystunivka quarry is in the Horodyshe massif (Fig. 3), and it exposes a medium-grained quartz monzonite, which in the western part of the quarry is cut by a thick (20-30 m) sheet- like syenite body. Contacts between ...
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Geochemistry, Nd, Pb and Sr Isotope Systematics, and U-Pb zircon ages of the Neoarchean Bad Vermilion Lake Greenstone Belt and Spatially Associated Granitic rocks, Western Superior Province, Canada
... My sincerest thanks and gratitude must foremost be extended to Dr. Ali Polat for his patient mentorship, enthusiastic encouragement, and, most of all, his thorough, insightful, and constructive criticism–all of which ...
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Detrital zircon record and tectonic setting
... detrital zircon grain and the depositional age of the succession in which it occurs, plotted as cumulative proportion curves, as a function of three main tectonic settings: convergent set- ting (A), collisional ...
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Geology, Geochemistry and Geochronology of the Kenticha Rare Metal Granite Pegmatite, Adola Belt, Southern Ethiopia: A Review
... and geochronology and dis- cusses the spatial and temporal relationship of the granite pegmatite and the rare metal mineralization of the Kenticha granite pegmatite, southern Ethiopia using published and ...
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