Relaciones entre fallas y sismicidad en el noroeste peninsular
Loading...
Official URL
Full text at PDC
Publication date
2000
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Sociedad Geológica de España
Citation
González Casado, J.M. y Giner Robles, J.L. (2000): «Relaciones entre fallas y sismicidad en el noroeste peninsular», Geogaceta, 28, pp. 71-74.
Abstract
The statistical study of the post-hercynian cartographic faults of the Northwest part of Spain (Galicia) allow to precise the existence of three main fault sets; NE-SW, NW-SE and N-S, which controlled the topograpic features in this area. The seismic epicentres in this region are related mainly with the NE-SW and N-S fault sets, which are, probably, the seismogenetic faults. The orientation of the stresses responsible for the seismic activity been deduced from the analyses of 76 earthquake focal mechanisms. The maximum horizontal compression direction is located NW-SE, then the NE-SW faults move as reverse faults, the NW-SE set as normal faults and the N-S as normal-oblique faults (sinistral).