Orogenic processes in transpressional regimes

• Autores: Andrés Pérez Estaún, Javier Escuder Viruete, David Brown
• Localización: Trabajos de geología, ISSN 0474-9588, Nº 29, 2009, págs. 36-41
• Idioma: inglés
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• Resumen

  • The Uralides and the Hispaniola belts present two well-preserved examples of arc-continent collision orogens formed with different plate convergent angle. Many of the orogenic processes are common to these two orogens, but its consequences are different in some cases. Exhumation of highpressure rocks is far more complicated in small angle convergent collision zones (Hispaniola). These rocks are transported to wrench fault zones and exhumed along them. However, the main differences in these extreme collisonal orogenic examples are evident in the structure of the belt. Lack of cilindricity of structures, irregular topography of the mountains, lack of a clear sequence of structure formation, coeval development of different structures, development of intramontane subromboidal basins, are characteristics of the deformation of the upper plate in the case of plate collision at very low angle.