Geology of the Susa Shear Zone (Susa Valley, Western Alps)

Autor:	Stefano Ghignone, Marco Gattiglio, Gianni Balestro, Alessandro Borghi
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	western alpine ophiolites tectonic mélanges orogenic exhumation processes polyphase shear zones Maps G3180-9980
Zdroj:	Journal of Maps, Vol 16, Iss 2, Pp 79-86 (2020)
Druh dokumentu:	article
ISSN:	1744-5647 17445647
DOI:	10.1080/17445647.2019.1698473
Popis:	The 1:10,000 scale geological map of the Susa Shear Zone (SSZ) in the inner sector of the Western Alps, aims to describe the geological setting and tectonic evolution of a first-order Alpine shear zone, which drove exhumation and juxtaposition of different oceanic and continental margin units (i.e. the blueschist-facies External Piedmont Zone in its hanging wall and the eclogite-facies Internal Piedmont Zone and Dora Maira Massif in its footwall). The SSZ corresponds to a tectonic mélange showing a block-in-matrix structure, wherein mylonitic calcschists embed blocks of different rock units. Geological mapping and structural analysis investigated overprinting relationships among shear planes and structures related to different deformation phases: they show that the SSZ evolved through two tectonic events, during which apparent reverse top-to-E shear planes were superposed by extensional top-to-W ones.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/2a8ec0600a4d4ead94545b672db1a2ff Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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