The late stages of the Pampean Orogeny, Córdoba (Argentina): Evidence of postcollisional Early Cambrian slab break-off magmatism
Widespread rhyolitic and mafic volcanism in the northern and southern sectors respectively of Eastern Sierras Pampeanas, central western Argentina, are associated with an important phase of extension and uplift linked to slab break-off on latest stages of the Pampean Orogeny. The main orogenic defor...
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2015
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| LEADER | 23265caa a22015377a 4500 | ||
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| 001 | PAPER-24599 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518205629.0 | ||
| 008 | 190411s2015 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-84949098315 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Ramos, V.A. | |
| 245 | 1 | 4 | |a The late stages of the Pampean Orogeny, Córdoba (Argentina): Evidence of postcollisional Early Cambrian slab break-off magmatism |
| 260 | |b Elsevier Ltd |c 2015 | ||
| 270 | 1 | 0 | |m Ramos, V.A.; Instituto de Estudios Andinos Don Pablo Groeber (Universidad de Buenos Aires - CONICET)Argentina |
| 506 | |2 openaire |e Política editorial | ||
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| 504 | |a Williams, I.S., Claesson, S., Isotopic evidence for the Precambrian provenance Caledonian metamorphism of high grade paragneisses from the Seve Nappes. Scandinavian Caledonides. II ion microbrobe zircon U-Th-Pb (1987) Contrib. Mineral. Petrol., 97, pp. 205-217 | ||
| 520 | 3 | |a Widespread rhyolitic and mafic volcanism in the northern and southern sectors respectively of Eastern Sierras Pampeanas, central western Argentina, are associated with an important phase of extension and uplift linked to slab break-off on latest stages of the Pampean Orogeny. The main orogenic deformation took place between 540 and 535 Ma based on new ages available for this region. New U-Pb ages in zircons from the Oncán Rhyolite and new and old recalculated zircons from Los Burros Rhyodacite in the northern sector of Sierras de Córdoba, together with new U-Pb ages of the southern sector, indicate that volcanic and subvolcanic rocks of both sectors are partially coeval and unconformably overlying and/or intruding the basement rocks during a period of exhumation and subsequent cooling at 530-520 Ma. These data are in agreement with previous estimates for the final uplift of the Sierras de Córdoba based on the K-Ar cooling ages. The southern sector of Eastern Sierras Pampeanas may represent deeper structural levels within the crust and is characterized by the occurrence of small mafic bodies with OIB-like signature. New and reinterpreted U-Pb SHRIMP and TIMS ages on zircons and monazites in the metamorphic associated rocks date this episode, which is related to a rapid slab break-off event at 519-515 Ma. This episode is also associated with the emplacement of peraluminous granitoids, and with the extension, cooling and final uplift of the rocks affected by the Pampean Orogeny all along the Eastern Sierras Pampeanas. © 2015 Elsevier Ltd. |l eng | |
| 536 | |a Detalles de la financiación: Conselho Nacional de Desenvolvimento Científico e Tecnológico | ||
| 536 | |a Detalles de la financiación: Secretaría de Ciencia y Técnica, Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: Australian National University | ||
| 536 | |a Detalles de la financiación: The authors want to thank Dr. Alina Tibaldi and an anonymous reviewer for their constructive and thoughtful critics that contributed to a better comprehension of the manuscript. M. Pimentel wants to express his gratitude to CNPq for continuous financial support of research projects carried out at the Geochronology Laboratory of the University of Brasília, and to Dr. Richard Amstrong for his assistance in Canberra, Australian National University; and V. Ramos acknowledges funding received from UBACyT for field work and logistical support, as well as to Gabriela Mosconi for her professional drafting. This is a contribution R-125 of the Instituto de Estudios Andinos Don Pablo Groeber (UBA-CONICET). | ||
| 593 | |a Instituto de Estudios Andinos Don Pablo Groeber (Universidad de Buenos Aires - CONICET), Argentina | ||
| 593 | |a Departamento de Geología, F.C.E.y N., Universidad de Buenos Aires, Argentina | ||
| 593 | |a Instituto de Geociências, Universidade de Brasília, Brasília-DF, 70910-900, Brazil | ||
| 593 | |a University of Western Australia, Perth, WA 6009, Australia | ||
| 690 | 1 | 0 | |a CAMBRIAN |
| 690 | 1 | 0 | |a NEOPROTEROZOIC |
| 690 | 1 | 0 | |a OROGENIC COLLAPSE |
| 690 | 1 | 0 | |a RHYOLITES |
| 690 | 1 | 0 | |a SIERRAS PAMPEANAS |
| 690 | 1 | 0 | |a WESTERN GONDWANA |
| 690 | 1 | 0 | |a CAMBRIAN |
| 690 | 1 | 0 | |a COLLISION ZONE |
| 690 | 1 | 0 | |a EMPLACEMENT |
| 690 | 1 | 0 | |a GONDWANA |
| 690 | 1 | 0 | |a MAGMATISM |
| 690 | 1 | 0 | |a OROGENY |
| 690 | 1 | 0 | |a PROTEROZOIC |
| 690 | 1 | 0 | |a RHYOLITE |
| 690 | 1 | 0 | |a URANIUM-LEAD DATING |
| 690 | 1 | 0 | |a VOLCANISM |
| 690 | 1 | 0 | |a ZIRCON |
| 690 | 1 | 0 | |a SIERRAS PAMPEANAS |
| 651 | 4 | |a ARGENTINA | |
| 651 | 4 | |a CORDOBA [ARGENTINA] | |
| 700 | 1 | |a Escayola, M. | |
| 700 | 1 | |a Leal, P. | |
| 700 | 1 | |a Pimentel, M.M. | |
| 700 | 1 | |a Santos, J.O.S. | |
| 773 | 0 | |d Elsevier Ltd, 2015 |g v. 64 |h pp. 351-364 |p J. South Am. Earth Sci. |x 08959811 |w (AR-BaUEN)CENRE-1080 |t Journal of South American Earth Sciences | |
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| 856 | 4 | 0 | |u https://doi.org/10.1016/j.jsames.2015.08.002 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_08959811_v64_n_p351_Ramos |y Handle |
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