| dc.creator | Cavalcanti de Araujo M.N. | |
| dc.creator | Alves da Silva F.C. | |
| dc.creator | Jardim de Sa E.F. | |
| dc.creator | Holcombe R.J. | |
| dc.creator | de Vasconcelos P.M. | |
| dc.date | 2003 | |
| dc.date | 2015-06-30T17:28:38Z | |
| dc.date | 2015-11-26T15:40:53Z | |
| dc.date | 2015-06-30T17:28:38Z | |
| dc.date | 2015-11-26T15:40:53Z | |
| dc.date.accessioned | 2018-03-28T22:49:21Z | |
| dc.date.available | 2018-03-28T22:49:21Z | |
| dc.identifier | | |
| dc.identifier | Journal Of Structural Geology. , v. 25, n. 12, p. 2089 - 2107, 2003. | |
| dc.identifier | 1918141 | |
| dc.identifier | 10.1016/S0191-8141(03)00069-5 | |
| dc.identifier | http://www.scopus.com/inward/record.url?eid=2-s2.0-0142135910&partnerID=40&md5=4453752fa78abebdc7a2aadb572b156a | |
| dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/102178 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/102178 | |
| dc.identifier | 2-s2.0-0142135910 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1264476 | |
| dc.description | The polyphase evolution of the Seridó Belt (NE-Brazil) includes D1 crust formation at 2.3-2.1 Ga, D2 thrust tectonics at 1.9 Ga and crustal reworking by D3 strike-slip shear zones at 600 Ma. Microstructural investigations within mylonites associated with D2 and D3 events were used to constrain the tectono-thermal evolution of the belt. D2 shear zones commenced at deeper crustal levels and high amphibolite facies conditions (600-650 °C) through grain boundary migration, subgrain rotation and operation of quartz 〈c〉-prism slip. Continued shearing and exhumation of the terrain forced the re-equilibration of high-T fabrics and the switching of slip systems from 〈c〉-prism to positive and negative 〈a〉-rhombs. During D3, enhancement of ductility by dissipation of heat that came from syn-D3 granites developed wide belts of amphibolite facies mylonites. Continued shearing, uplift and cooling of the region induced D3 shear zones to act in ductile-brittle regimes, marked by fracturing and development of thinner belts of greenschist facies mylonites. During this event, switching from 〈a〉-prism to 〈a〉-basal slip indicates a thermal path from 600 to 350 °C. Therefore, microstructures and quartz c-axis fabrics in polydeformed rocks from the Seridó Belt preserve the record of two major events, which includes contrasting deformation mechanisms and thermal paths. © 2003 Elsevier Ltd. All rights reserved. | |
| dc.description | 25 | |
| dc.description | 12 | |
| dc.description | 2089 | |
| dc.description | 2107 | |
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| dc.language | en | |
| dc.publisher | | |
| dc.relation | Journal of Structural Geology | |
| dc.rights | fechado | |
| dc.source | Scopus | |
| dc.title | Microstructural Evolution Of The Seridó Belt, Ne-brazil: The Effect Of Two Tectonic Events On Development Of C-axis Preferred Orientation In Quartz | |
| dc.type | Artículos de revistas | |
