On the nature of buttressing in margin-parallel strike-slip fault systems

Beck Jr, M.E., Rojas, C., Cembrano, J.

Keywords: convergence, strike-slip, fault system, plate margin, buttres, sing


Margin-parallel strike-slip faults commonly develop along convergent plate margins where an oceanic plate subducts obliquely beneath a continental plate. Such faults detach a "sliver' of continental crust from the leading edge of the overriding plate; fault motion then causes the sliver to move parallel to the continental margin, in the direction of the transverse component of relative plate motion. However, few slivers move as rapidly as predicted by simple analyses of the forces acting on them. This discrepancy must be due principally to the "buttress effect': resistance to displacement of the sliver arising from a space problem at its leading edge. A strongly buttressed sliver will move only insofar as the buttress can be overcome. Obvious ways in which a buttress can be overcome are by thickening the crust or widening the sliver. -from Authors

Más información

Título de la Revista: Geology 21(8), pp. 755-758
Volumen: 21
Número: 8
Fecha de publicación: 1993
Página de inicio: 755
Página final: 758
Idioma: English

DOI: 10.1130/0091-7613(1993)021<0755:OTNOBI>2.3.CO

Notas: scopus