Kinetics of the Coesite-Quartz Transition: Application to the Exhumation of Ultrahigh-Pressure Rocks |
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| Authors: | PERRILLAT J P; DANIEL I; LARDEAUX J M; CARDON H |
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| Institution: | LABORATOIRE DE SCIENCES DE LA TERRE, UMR 5570 CNRS–UCB LYON 1–ENS LYON, BAT. 402 GÈODE, 43 BD DU 11 NOVEMBRE 1918, 69622 VILLEURBANNE CEDEX, FRANCE |
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| Abstract: | The kinetics of the quartz–coesite phase transition hasbeen studied in situ by X-ray diffraction in the 2·1–3·2GPa, 500–1010°C pressure–temperature range.Analysis of the data within Cahn's model of nucleation and growthat grain boundaries reveals that the prograde and retrogradereactions have different kinetics. The quartz |
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