globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00531-015-1166-2
Scopus记录号: 2-s2.0-84942365513
论文题名:
Structural evolution of the Sarandí del Yí Shear Zone, Uruguay: kinematics, deformation conditions and tectonic significance
作者: Oriolo S.; Oyhantçabal P.; Heidelbach F.; Wemmer K.; Siegesmund S.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2015
卷: 104, 期:7
起始页码: 1759
结束页码: 1777
语种: 英语
英文关键词: Brasiliano ; Dom Feliciano Belt ; Neoproterozoic ; Río de la Plata Craton ; Transpression ; Western Gondwana
Scopus关键词: Brasiliano orogeny ; crustal thinning ; deformation ; Gondwana ; shear zone ; structural geology ; tectonic evolution ; tectonic setting ; transpression ; Brazil ; Dom Feliciano Belt ; Rio Grande do Sul
英文摘要: 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 (>600 Ma) and late Ediacaran–lower Cambrian times. © 2015, Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942365513&doi=10.1007%2fs00531-015-1166-2&partnerID=40&md5=f94d45c5281864d125adcfe10e8397b1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70253
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Geoscience Centre, Georg–August–Universität Göttingen, Goldschmidtstraße 3, Göttingen, Germany; Departamento de Geología, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo, Uruguay; Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstraße 30, Bayreuth, Germany

Recommended Citation:
Oriolo S.,Oyhantçabal P.,Heidelbach F.,et al. Structural evolution of the Sarandí del Yí Shear Zone, Uruguay: kinematics, deformation conditions and tectonic significance[J]. International Journal of Earth Sciences,2015-01-01,104(7)
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