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Modelización gravimétrica de la transición entre corteza continental y oceánica en el margen oeste de Galicia

Druet Vélez, María and Muñoz Martín, Alfonso and Carbó Gorosabel, Andrés and Álvarez García, Juan and Llanes Estrada, Pilar (2004) Modelización gravimétrica de la transición entre corteza continental y oceánica en el margen oeste de Galicia. Geo-Temas, 6 (3). pp. 229-232. ISSN 1576-5172

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Abstract

Since 2001 marine gravity data have been collected on the North Atlantic Ocean around Galicia Mar,-,in. The aim of this paper is the analysis of the Bouguer anomaly map of the west margin of Galicia and the modelling of the ocean-continent boundary in this area. Very high Bouguer anomaly values have been obtained for this region, specially in the oceanic trust of the Iberian Abyssal Plain. A gravity low is related to the Galicia Bank continental block, and relative positive elongate highs correspond with the Peridotite Ridge and the Galicia Interior Basin. The two gravity models presented here, based on seismic refraction and reflection profiles, have allowed the characterization of the gravity limit between oceanic and continental trust in this margin. This limit is located 15 km eastwards in the northern profile 1, from the previous proposed limit based on sedimentary criteria.

Item Type:Article
Uncontrolled Keywords:Gravity modelling; Crustal structure; Galicia Bank
Subjects:Sciences > Physics > Geophysics
Sciences > Geology > Geodynamics
ID Code:6104
Deposited On:16 Mar 2007
Last Modified:06 Feb 2014 07:47

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