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Showing 1 to 7 of 7 for “"Ti-in-zircon"”.
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Geochemistry, Geothermobarometry and Geochronology of High-Pressure Granulites and Implications for the Exhumation History of Ultrahigh-Pressure Terranes: Dulan, Western China
… rocks of the North Qaidam terrane, Western China, represent continental crust that has been subducted ~100 km during continental collision. Adjacent granulites representing burial to ~50 km could either be overprinted eclogites or a separate high-pressure-high-temperature (HP-HT) granulite …
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Crystallisation history of rhyolite magmas at Tarawera volcano, New Zealand, from in-situ 238U-230Th disequilibrium dating and trace element geochemistry of zircon
Tarawera volcano formed during four intra-caldera rhyolite eruptive episodes in the Okataina Volcanic Centre (OVC), New Zealand, at 21.9, 17.7, 13.7, and 0.7 ka that were all triggered by basalt intrusion. Most of the episodes involved at least two distinct magma types that were erupted from the …
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Integrating in situ Geochronology and Metamorphic Petrology: An Example from the Gruf Complex, European Central Alps
Understanding the thermal evolution (i.e. the timing, rate, duration, and magnitude of thermal events) within mountain belts has important implications for the geodynamic evolution of both ancient and modern orogenies. Ultra-high temperature (UHT) metamorphism requires geodynamic or tectonic …
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Petrogenesis of Mesoarchean high-K rocks in the Kaapvaal Craton: Investigating the Boesmanskop Alkaline Complex and Salisbury Kop batholith
The Boesmanskop Alkaline Complex (BAC) and Salisbury Kop batholith (SB) are two contrasting units of the large ca. 3105 Ma Granodiorite-Monzogranite-Syenogranite (GMS) suite, situated on the eastern margin of the Kaapvaal Craton. The BAC consists of small intrusions at the southern end of the …
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Mesoproterozoic Basement From The Central And Southern Appalachians Reveal High-temperature Magmatic Conditions And Non-laurentian Origin Of Earth’s Most Zircon Fertile Magmas
… (1.4-0.9 Ga) Grenville Orogeny led to the formation of the supercontinent Rodinia. One unique characteristic of the Grenville Orogeny is that it produced a volumetrically significant amount of zirconium- (Zr) enriched granitoids, evidently more than any period both prior to and after the …
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Mesoproterozoic Basement From the Central and Southern Appalachians Reveal High-temperature Magmatic Conditions and Non-laurentian origin of Earth's Most Zircon Fertile Magmas
… (1.4-0.9 Ga) Grenville Orogeny led to the formation of the supercontinent Rodinia. One unique characteristic of the Grenville Orogeny is that it produced a volumetrically significant amount of zirconium- (Zr) enriched granitoids, evidently more than any period both prior to and after the …
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LITHIUM ENRICHMENT IN ANATECTIC PEGMATITES: NEW INSIGHTS FROM THE THERMOMETAMORPHIC AUREOLE OF THE ADAMELLO BATHOLITH
In the contact aureole of the collisional metaluminous Adamello pluton (Italy), pelites reached hornfels facies conditions locally undergoing partial melting, forming Crd-bearing and Crd-absent migmatities. This small-scale migmatitic field is spatially associated with barren and …