Deciphering large-scale superposed fold systems at shallow crustal levels in collision zones: insights from the Marguareis Massif (southwestern Alps) - Observatoire de la Cote d'Azur Accéder directement au contenu
Article Dans Une Revue Journal of Maps Année : 2021

Deciphering large-scale superposed fold systems at shallow crustal levels in collision zones: insights from the Marguareis Massif (southwestern Alps)

Edoardo Sanità
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Jean-Marc Lardeaux
Michele Marroni
Guido Gosso
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Luca Pandolfi

Résumé

We present and discuss the results of a field-based approach including accurate geological mapping and micro-to map-scale structural analysis to highlight the finite strain pattern recorded in Marguareis Unit, a massif deformed at shallow crustal levels at the boundary between Maritime and Ligurian Alps. We describe superposed tectonic structures developed under low-grade metamorphic conditions during the Alpine collision and nowadays exceptionally well recorded in the area of interest. We demonstrate that the structural frame of the Marguareis Unit results from superposition of fourfold systems, later segmented, but without significant displacements, by brittle faults.
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hal-03356600 , version 1 (28-09-2021)

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Edoardo Sanità, Jean-Marc Lardeaux, Michele Marroni, Guido Gosso, Luca Pandolfi. Deciphering large-scale superposed fold systems at shallow crustal levels in collision zones: insights from the Marguareis Massif (southwestern Alps). Journal of Maps, 2021, 17 (2), pp.559-568. ⟨10.1080/17445647.2021.1982034⟩. ⟨hal-03356600⟩
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