Experimental models of Basement-controlled salients application to the Proterozoic fold-thrust belt of the Quadrilátero Ferrífero (Minas Gerais, Southeastern Brazil)
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| Format: | Artículo científico |
| Sprache: | en |
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Academia Brasileira de Ciências
2003
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| author | Caroline J. S. Gomes |
| author_facet | Caroline J. S. Gomes |
| contents | Experimental models of Basement-controlled salients application to the Proterozoic fold-thrust belt of the Quadrilátero Ferrífero (Minas Gerais, Southeastern Brazil) Caroline J. S. Gomes Milton Pereira-Filho Silvia C. M. Braga Multidisciplinaria (Ciencias Naturales y Exactas) salients brittle deformation ductile deformation experimental modelling Quadrilátero Ferrífero Scaled sandbox models are used to simulate the development of ´basement´-controlled, salients. We investigate the controlling factors on the development of closed curvatures in map-view, considering constant both the sand pack thickness and the space between obstacles. These models are compared with the Fundão-Cambotas Fault System in the Proterozoic fold-thrust belt in the Quadrilátero Ferrífero region, along the southeastern margin of the São Francisco craton. In the experiments, a pronounced curvature resulted from the margin-controlled salient process in the presence (i) of a basal ductile detachment, or (ii) of pre-existing structures. The results suggest that the convex-to-the-foreland, west-vergent Fundão-Cambotas Fault System that borders the Archean basement highs and displaced older Transamazonian structures westward, is partly a consequence of interaction of propagating thrusts with obstacles in the foreland. 2003 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32775210 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.2 Vol.75 |
| format | Artículo científico |
| id | redalyc_32775210 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Experimental models of Basement-controlled salients application to the Proterozoic fold-thrust belt of the Quadrilátero Ferrífero (Minas Gerais, Southeastern Brazil) Caroline J. S. Gomes Multidisciplinaria (Ciencias Naturales y Exactas) salients brittle deformation ductile deformation experimental modelling Quadrilátero Ferrífero Experimental models of Basement-controlled salients application to the Proterozoic fold-thrust belt of the Quadrilátero Ferrífero (Minas Gerais, Southeastern Brazil) Caroline J. S. Gomes Milton Pereira-Filho Silvia C. M. Braga Multidisciplinaria (Ciencias Naturales y Exactas) salients brittle deformation ductile deformation experimental modelling Quadrilátero Ferrífero Scaled sandbox models are used to simulate the development of ´basement´-controlled, salients. We investigate the controlling factors on the development of closed curvatures in map-view, considering constant both the sand pack thickness and the space between obstacles. These models are compared with the Fundão-Cambotas Fault System in the Proterozoic fold-thrust belt in the Quadrilátero Ferrífero region, along the southeastern margin of the São Francisco craton. In the experiments, a pronounced curvature resulted from the margin-controlled salient process in the presence (i) of a basal ductile detachment, or (ii) of pre-existing structures. The results suggest that the convex-to-the-foreland, west-vergent Fundão-Cambotas Fault System that borders the Archean basement highs and displaced older Transamazonian structures westward, is partly a consequence of interaction of propagating thrusts with obstacles in the foreland. 2003 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32775210 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.2 Vol.75 |
| title | Experimental models of Basement-controlled salients application to the Proterozoic fold-thrust belt of the Quadrilátero Ferrífero (Minas Gerais, Southeastern Brazil) |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) salients brittle deformation ductile deformation experimental modelling Quadrilátero Ferrífero |
| url | https://www.redalyc.org/articulo.oa?id=32775210 |