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

Francisco Hernán Reguera, C. R. Cubas, María José Huertas Coronel, José Luis Brandle Matesanz, Eumenio Ancochea Soto

  • 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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