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Análisis tensorial de la deformación superpuesta en el límite oriental de la cuenca de Madrid

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URI: http://hdl.handle.net/2183/6181

Publication date

1994

Authors

Muñoz Martín, A.
Vicente Muñoz, G. de
González Casado, J. M.

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Cadernos do Laboratorio Xeolóxico de Laxe, 1994, 19: 203-214 ISSN: 0213-4497

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Academic degree

Abstract

An analysis of Neogene brittle deformation using fault populatíon analysis methods has been carried out between the SW border of the Iberian Range and Altomira Range. Two main paleostress fields have been established: 1) N70E - N120E compression (Altomira paleostress field) ofLate Oligocene - Early Miocene age that induced the formation of the SW border of Iberian Range and Altomira - Pareja thrust belts with reverse and strike-slip faults. 2) N140-N160E compression (Guadarrama paleostress field) of Middle Aragonian - early Pleistocene age that reactivated previous faults with strikeslip movement along the Iberian Range. A superposition of two regional stress fields (Iberian and Guadarrama) is proposed to explain E-W compression that formed Altomira Range. Stress tensorial additions have been realized to check this hypothesis.

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Keywords

Altomira Range Neogene Brittle deformation Fault population analysis Stress tensor Paleostress field

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REV - CLXL - Vol. 19 (1994)