Structural and petrographic analysis at the north-eastern margin of the Oligocene Traversella pluton (Internal Western Alps, Italy)

Zanoni, Davide (2010) Structural and petrographic analysis at the north-eastern margin of the Oligocene Traversella pluton (Internal Western Alps, Italy). Italian journal of geosciences, 129 (1). pp. 51-68. ISSN 2038-1727

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Abstract

In this work a new form surface map at 1:5000 scale of the north-eastern margin of the Oligocene Traversella pluton, synthesised from a field structural study assisted by optical petrography, is presented. Relative chronology of superposed foliations and effects of progress of contact metamorphic reactions in the contact aureole are shown on the structural map for each of the country rock-types of the Sesia-Lanzo Zone. The structural and metamorphic evolution was reconstructed across the north-eastern margin of the pluton by separating the pre- and the post-intrusive tectonic history and defining the contact aureole outline. Contact metamorphic assemblages and thermobarometric estimates indicate that this intrusive body emplaced at shallow structural levels (contact metamorphism peak conditions: T < 750°C; P < 0.2 GPa)

Item Type: Article
Additional Information: Abstract anche in italiano
Uncontrolled Keywords: Form surface map, contact metamorphism, Traversella pluton, Sesia-Lanzo Zone, Western Alps
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.1 Struttura generale e proprietà della Terra > 551.13 Crosta (Include il magma)
500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.8 Geologia strutturale (Classificare qui la deformazione, il diastrofismo, l'epirogenesi, la tettonica) (Classificare la Geomorfologia in 551.41)
500 Scienze naturali e Matematica > 550 Scienze della Terra > 552 Petrologia (Classificare qui la Petrografia, la Litologia, le rocce)
Depositing User: Users 66 not found.
Date Deposited: 31 May 2012 07:32
Last Modified: 31 May 2012 07:32
URI: http://eprints.bice.rm.cnr.it/id/eprint/3540

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