Slow and fast deformation in the Dora Maira Massif, Italian Alps: Pseudotachylytes and inferences on exhumation history

Autor:	Eric C. Ferré, John W. Geissman, Mike Cosca, M. S. Zechmeister
Rok vydání:	2007
Předmět:	geography geography.geographical_feature_category Deformation (mechanics) Metamorphic rock Seismic slip Geochemistry Geology Massif Geomorphology Gneiss Mylonite
Zdroj:	Journal of Structural Geology. 29:1114-1130
ISSN:	0191-8141
Popis:	The Dora Maira Massif (DM), Western Alps is a type example of an ultra-high pressure (UHP) metamorphic terrain. The occurrence of pseudotachylytes within the Val Gilba area of DM led to speculation regarding the role of seismic slip in the exhumation of the massif. In this study, new field, microstructural and geochemical data on the pseudotachylyte veins and their mylonitic gneiss host are presented. The formation of pseudotachylyte veins occurred late in the exhumation history at 20.1 ± 0.5 Ma and at shallow depths (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9bc0b2b067ddc9c1bb3ca355e2faada6 https://doi.org/10.1016/j.jsg.2007.03.009 Zobrazit plný text záznamu Full Text from ScienceDirect