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Geometría del enjambre de diques cónicos de Vallehermoso La Gomera (Islas Canarias).

  • Autores: Francisco Hernán Reguera, C. R. Cubas, María José Huertas Coronel, José Luis Brandle Matesanz, Eumenio Ancochea Soto
  • Localización: Geogaceta, ISSN 0213-683X, Nº. 27, 1999, págs. 87-90
  • Idioma: español
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  • Resumen
    • A mainly phonolitic, 10 km in diameter, cone-sheet complex crops out on the northern area of La Comera. The swarm intrudes into the Basal Complex, The Old Basalts and other rocks of the Trachytic-phonolitic Complex to which they belong. The cone-sheet complex center lies south of Vallehermoso. Most of the dykes in the core of the structure are "conic dome-sheets" which start to be evidenced 400m far from the center and dip over 50°. In the surrounding area the dome-sheets are less frequent while simple cone-sheets are more abundant and dip more gently towards the periphery. From the analysis of their dips and distribution a single conic structure is deduced. The cone-sheets were originally connected to a hypothetical dome-shaped magmatic body whose uppermost part is at present located 1350m under sea level


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