GNGTS 2016 - Atti del 35° Convegno Nazionale
GNGTS 2016 S essione 1.2 243 and with contact metamorphism assemblages replacing greenschist facies assemblages. The computed extent of the aureole for the simulations is wider than the mapped one because the computed thermal boundary of the aureole is between 300 and 400°C. Finally, the thermal gradient of the country rocks at the time of pluton intrusion is sufficiently high to justify the emplacement of Biella pluton during the accomplishment of the break-off of the Alpine slab. References Babist J., Handy M. R., Konrad-Schmolke M., Hammerschmidt K.; 2006: Precollisional, multistage exhumation of subducted continental crust: The Sesia Zone, western Alps. Tectonics, 25 , TC6008, doi: 10.1029/2005TC001927. Bartoli O., Meli S., Sassi R., Magaraci D.; 2013: Amphiboles and clinopyroxenes from Euganean (NE Italy) cumulus enclaves: evidence of subduction-related melts below Adria microplate. Rend Lincei, 24 , 151–���� ���� �������� 161, doi: 10.1007/ s12210-013-0232-6. 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I., Marotta A. M.; 2012: Integration of natural data within a numerical model of ablative subduction: a possible interpretation for the Alpine dynamics of the Austroalpine crust . J. Metamorph. Geol., 30 , 973–996, doi: 10.1111/jmg.12000. Romer R. L., Sch���� ��� ����� ��� ����� ärer U., Steck A.; 1996: Alpine and pre-Alpine magmatism in the root-zone of the Western Central Alps , Contrib. to Mineral. Petrol., 123 , 138–158. Rosenberg C. L.; 2004: Shear zones and magma ascent: a model based on a review of the Tertiary magmatism in the Alps . Tectonics, 23 , 1–21. Spalla M. I., Lardeaux J. M., Dal Piaz G. V., Gosso G.; 1991: Mé����������� �� ���������� � �� ����� ������� �� �� tamorphisme et tectonique à la marge externe de la zone Sesia-Lanzo (Alpes Occidentales) . Mem. di Sci Geol., 43 , 361–369. Spalla M. I., Lardeaux J. M., Dal Piaz G. V., Gosso G., Messiga B.; 1996: Tectonic significance of Alpine eclogites . J. Geodyn., 21 , 257–285. Spalla, M. I., G. Gosso, A. M. Marotta, M. Zucali, and F. Salvi; 2010: Analysis of natural tectonic sys-tems coupled with numerical modelling of the polycyclic continental lithosphere of the Alps . Inter-national Geology Review, 52 , 1268–����� ����������� �������������� �������� 1302, doi:10.1080 /00206814.2010 .482737. Tiepolo M., Tribuzio R., Langone A.; 2011: High-Mg Andesite Petrogenesis by Amphibole Crystallization and Ultramafic Crust Assimilation: Evidence from Adamello Hornblendites (Central Alps, Italy) . J. Petrol., 52 , 1011– 1045, doi: 10.1093/petrology/egr016.
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