Produção Nacional
Caracterização estrutural de um segmento da rampa lateral de Capitólio, limite norte da nappe de Passos (MG)
2009; Sociedade Brasileira de Geologia; Volume: 39; Issue: 2 Linguagem: Inglês
10.5327/rbg.v39i2.1465
ISSN2317-4889
AutoresTiago Eloi de Souza Sério dos Santos, Luiz Sérgio Amarante Simões,
Tópico(s)Geological and Geophysical Studies
ResumoThe northern edge of Passos nappe, southwest of Minas Gerais state, is marked by a lateral ramp system called Capitolio Lateral Ramp. This ramp is the contact of the Internal and External domains of the Southern segment of the Brasilia Fold Belt. A detailed study of these domains permits to consider a model for the evolution of this ramp, explained as the vertical structures, which marks External Domain, changing to sub-horizontal structures verified in Internal Domain, both striking NW-SE. The contact between these domains is distinguished by a later thrust (D 3 ) which obliterates the initial registers of the development of the lateral ramp, a steep plane (D 2 ). The covered portion of this history involved complex deformation models, where by rotation of the vorticity axis is possible to see a transition of a vertical to horizontal Y-Monoclinic Shear Zone, respectively in the ramp and flat of the nappe.
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