Estudio sísmico de la corteza superior en Isla Decepción (Antártida)

  1. L.M. Agudo 1
  2. D. Córdoba 2
  3. J.M. Dávila 1
  4. A. Pazos 1
  1. 1 Real Instituto y Observatorio de la Armada
    info

    Real Instituto y Observatorio de la Armada

    San Fernando, España

  2. 2 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2004

Título del ejemplar: IV Congreso Geológico de España

Número: 6

Páginas: 205-208

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

In this work, results from 4 refraction/wide angle seismic profiles, acquired in 2002 during the GEODEC-MAR cruise across Deception Island volcanic interior; have allowed us to determine the upper crustal structure. According to P-wave velocity-depth model obtained, a four layer structure have been observed. The first and the second layers correspond to the sedimentary cover (1.8-2.8 and 3.5- 3.6 km s'1 respectively). The third one is interpreted as the crystalline basement (4.0-4.9 km s'1). The fourth layer is separated in two zones which indicate two types of crust: type 1-5.5 km s type 11-6.0 km s'1, the contact between both zones could be related with a fracture zone across Deception Island.

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