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

Hernán, F. and Cubas, C.R. and Huertas Coronel, María José and Brandle, J.L. and Ancochea Soto, Eumenio (2000) Geometría del enjambre de diques cónicos de Vallehermoso La Gomera (Islas Canarias). Geogaceta (27). pp. 87-90. ISSN 0213-683X

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Abstract

A mainly phonolitic, 10 km in diameter, cone-sheet complex crops out on the northern area of La Gomera.
The swarm intrudes into the Basal Complex, The Old BasaIts 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 care 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 canesheets
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 cane-sheets were originally connected to a hypothetical
dome-shaped magmatic body whose uppermost part is at present located 7350m under sea level.

Item Type:Article
Uncontrolled Keywords:Felsic dykes, Cone sheet complex, La Gomera, Canary Islands
Subjects:Sciences > Geology > Petrology
ID Code:9924
Deposited On:04 Feb 2010 11:59
Last Modified:01 Mar 2010 11:54

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