caa a22 4500 606149317 CHVBK 20210128100533.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00531-015-1166-2 doi (NATIONALLICENCE)springer-10.1007/s00531-015-1166-2 Structural evolution of the Sarandí del Yí Shear Zone, Uruguay: kinematics, deformation conditions and tectonic significance [Elektronische Daten] [S. Oriolo, P. Oyhantçabal, F. Heidelbach, K. Wemmer, S. Siegesmund] The Sarandí del Yí Shear Zone is a crustal-scale shear zone that separates the Piedra Alta Terrane from the Nico Pérez Terrane and the Dom Feliciano Belt in southern Uruguay. It represents the eastern margin of the Río de la Plata Craton and, consequently, one of the main structural features of the Precambrian basement of Western Gondwana. This shear zone first underwent dextral shearing under upper to middle amphibolite facies conditions, giving rise to the reactivation of pre-existing crustal fabrics in the easternmost Piedra Alta Terrane. Afterwards, pure-shear-dominated sinistral shearing with contemporaneous magmatism took place under lower amphibolite to upper greenschist facies conditions. The mylonites resulting from this event were then locally reactivated by a cataclastic deformation. This evolution points to strain localization under progressively retrograde conditions with time, indicating that the Sarandí del Yí Shear Zone represents an example of a thinning shear zone related to the collisional to post-collisional evolution of the Dom Feliciano Belt that occurred between the Meso- to Neoproterozoic (>600Ma) and late Ediacaran-lower Cambrian times. Springer-Verlag Berlin Heidelberg, 2015 Dom Feliciano Belt nationallicence Brasiliano nationallicence Neoproterozoic nationallicence Transpression nationallicence Western Gondwana nationallicence Río de la Plata Craton nationallicence Oriolo S. Geoscience Centre, Georg-August-Universität Göttingen, Goldschmidtstraße 3, 37077, Göttingen, Germany aut Oyhantçabal P. Departamento de Geología, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut Heidelbach F. Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstraße 30, 95447, Bayreuth, Germany aut Wemmer K. Geoscience Centre, Georg-August-Universität Göttingen, Goldschmidtstraße 3, 37077, Göttingen, Germany aut Siegesmund S. Geoscience Centre, Georg-August-Universität Göttingen, Goldschmidtstraße 3, 37077, Göttingen, Germany aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/7(2015-10-01), 1759-1777 1437-3254 104:7<1759 2015 104 531 https://doi.org/10.1007/s00531-015-1166-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00531-015-1166-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Oriolo S. Geoscience Centre, Georg-August-Universität Göttingen, Goldschmidtstraße 3, 37077, Göttingen, Germany aut NATIONALLICENCE 700 1- Oyhantçabal P. Departamento de Geología, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay aut NATIONALLICENCE 700 1- Heidelbach F. Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstraße 30, 95447, Bayreuth, Germany aut NATIONALLICENCE 700 1- Wemmer K. Geoscience Centre, Georg-August-Universität Göttingen, Goldschmidtstraße 3, 37077, Göttingen, Germany aut NATIONALLICENCE 700 1- Siegesmund S. Geoscience Centre, Georg-August-Universität Göttingen, Goldschmidtstraße 3, 37077, Göttingen, Germany aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/7(2015-10-01), 1759-1777 1437-3254 104:7<1759 2015 104 531