Publicação

Structure and variscan evolution of Malpica-Lamego ductile shear zone (NW of Iberian Peninsula)

Ver documento

Detalhes bibliográficos
Resumo:The Malpica–Lamego ductile shear zone (MLDSZ) is a polyphasic structure developed in the NW of the Iberian Peninsula. The northern sector (NW Spain) of this shear zone is associated with a complex geological history that ranges from earlier Variscan to the emplacement of the Variscan nappes (allochthonous). Variscan intracontinental deformation after the allochthonous nappes emplaced, recognizably strike–slip, explains its spatial and structural continuity from the NW (Malpica, Spain) to the South (Lamego, Portugal). Here we focus on the Variscan development of the MLDSZ and characterize, longitudinally, this crustal megastructure. At the NW tip of the MLDSZ was considered an area (segment 1) with very good exposure of the Variscan intracontinental strike–slip component on outcrops of the coastline. in sequence, we address segment 2, with excellent leff-hand kinematic markers (shearband boudins and folds), on a metapelitic rock series. In the southern­ most part of the MLDSZ, strike–slip deformation, emplacement of granitic rocks (segment 3 and segment 5), regional structures (segment 4), and secondary manifestations of the southern tip of MLDSZ (segment 6) were studied.
Autores principais:Pamplona, J.
Outros Autores:Rodrigues, B. C.; Llana-Fúnez, S.; Simões, P. P.; Ferreira, N.; Coke, C.; Pereira, E.; Castro, P.; Rodrigues, J.
Assunto:Variscan Malpica–Lamego ductile shear zone Strike–slip deformation Kinematic markers Amphibolitic facies Ductile shear zone Intracontinental deformation Strike-slip deformational event Variscan orogeny Ciências Naturais::Ciências da Terra e do Ambiente
Ano:2016
País:Portugal
Tipo de documento:capítulo de livro
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

Registos relacionados

Registos relacionados