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Showing 1 to 5 of 5 for “"petrochronology"”.
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Tracking multistage deformation within an ultrahigh-pressure terrane: zircon and monazite microstructures and petrochronology from shear zones of the Western Gneiss Region, Norway
Deciphering different metamorphic and deformation events in polymetamorphic terranescan be complicated by changes in rheology and fluid/melt availability through time andby overprinting of the pressure-temperature-time-deformation (P-T-t-d) record byyounger orogenic events. The Western Gneiss …
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The effects of high temperature metamorphic and melting processes on granulite-facies rocks
… maxima, and tight clockwise P–T loops. Petrochronology (the nexus between the isotopic age of a mineral and its compositional controls) is being increasingly used to interrogate the thermobarometric record contained in metamorphic rocks. Combined zircon and monazite REE-isotopic U–Pb …
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How Hot, How Deep, How Long: Constraints on the Tectono-Metamorphic Evolution of Granulite Terranes
… during cooling. High-spatial resolution petrochronology provides temporal constraints on prograde metamorphism. These data suggest metamorphism in the PGD was driven by a long-lived heat source over large length-scales near the base of the lithosphere. Disparities in the timescales, …
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From the Appalachians to the Alps: Constraints on the Timing, Duration, and Conditions of Metamorphism at Convergent Margins
… allanite, and zircon laser ablation split-stream petrochronology are used to constrain the timing of poly-metamorphism and develop a tectonic model for the SRA. The SRA preserves evidence for at least three orogenic events, each with a relatively short duration (< 10 Myr.), likely due to repeated …
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Metamorphic and crustal evolution of Australian-Antarctic Proterozoic margins
… geochronological and geochemical (together “petrochronology”), and isotopic study that characterises the metamorphic and crustal evolution of two key and understudied tectonic regions at opposing ends of the MAFWO. High thermal gradients at mid-crustal levels (6.0–6.5 kbar, 900 °C) prevailed …