Multiscale structural analysis, applied to the north-western and southern portions of the Thor-Odin dome, reveals that the tectonometamorphic evolution predating the development of the regional fabric (ST) is contrasted. Pre- ST PT-estimates range between amphibolite and granulite facies conditions: these different PTdt evolutions suggest the existence of different tectono-metamorphic units before the development of the Cordilleran transposition foliation.
Pre-Cordilleran transposition signatures in felsic and intermediate composition boudins of the Thor-Odin dome, southeastern Canadian Cordillera / D. Raffaele Addamo, D. Zanoni, M.I. Spalla, G. Rebay. - In: RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA. - ISSN 2035-8008. - 29:(2013 Oct), pp. 138-141.
Pre-Cordilleran transposition signatures in felsic and intermediate composition boudins of the Thor-Odin dome, southeastern Canadian Cordillera
D. ZanoniSecondo
;M.I. Spalla;
2013
Abstract
Multiscale structural analysis, applied to the north-western and southern portions of the Thor-Odin dome, reveals that the tectonometamorphic evolution predating the development of the regional fabric (ST) is contrasted. Pre- ST PT-estimates range between amphibolite and granulite facies conditions: these different PTdt evolutions suggest the existence of different tectono-metamorphic units before the development of the Cordilleran transposition foliation.
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