SciELO - Scientific Electronic Library Online

 
vol.60 número4La fase primordial de estructuración de la faja plegada y corrida del Aconcagua: importancia de la fase pehuenche del Mioceno inferiorGeología y fracturas en la estructura San Pedro, sierra del Alto Río Seco, Sierras Subandinas, provincia de Salta índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Revista de la Asociación Geológica Argentina

versão impressa ISSN 0004-4822versão On-line ISSN 1851-8249

Resumo

BROENS, S.  e  PEREIRA, D.M.. Structural evolution of the transition zone between the Aconcagua and Malargûe fold and thrust belts, province of Mendoza. Rev. Asoc. Geol. Argent. [online]. 2005, vol.60, n.4, pp.685-695. ISSN 0004-4822.

In this work we describe briefly the stratigraphy and the structure of the Andes in the transition zone between the Aconcagua and Malargüe fold and thrust belts. The outcrops are a Permotriasic volcanic acid basement, Mesozoic sediments of the Cuenca Neuquina and Neogene volcanic rocks and continental deposits. Structuraly we distinguish from west to east four segments: a tectonic inversion zone, a tight folds zone, a central or imbrication zone, and the Carrizalito anticlinal. Two structural sections were built using field data collected from the thight folds and imbrication zones and the from western flank of the Carrizalito anticlinal, that describe the structures in the area. Regional lineaments with northwest trends, could be acting as transfer zones. It can be recognize two or three deformational pulses according to the relative ages between the structures and the uplift of the Cordillera Frontal. If the cordon del Carrizalito was a basement high we propose two deformational pulses, the first one of thin skinned type and the second one responsible of the uplift of the Frontal Cordillera, tilting the previously deformed sequence. If the uplift of the Carrizalito anticlinal worked as a sticking point of the fold and thrust belt, a third deformational episode with out-ofsequence faults could be recognized.

Palavras-chave : Andes; Mendoza; Cuenca Neuquina; Structure; Río Diamante.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons