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Metamorphic rates in collisional orogeny from in situ allanite and monazite dating

Janots, Emilie; Engi, Martin; Rubatto, Daniela; Berger, Alfons; Gregory, Courtney; Rahn, Meinert

Description

The prograde sequence of rare earth minerals recorded in metapelites during regional metamorphism reveals a series of irreversible reactions among silicates and phosphates. In individual samples from the northern Lepontine (Central Alps), allanite is partly replaced by monazite at 560-580 °C. Relic allanite retains its characteristic growth zoning acquired at greenschist facies conditions (430-450 °C). Coexisting monazite and allanite were dated in situ to delimit in time successive stages of...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
URI: http://hdl.handle.net/1885/35505
Source: Geology
DOI: 10.1130/G25192A.1

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