Las rocas volcánicas del Edificio Submarino de la isla de La Gomeracaracterísticas composicionales

1. Ancochea Soto, Eumenio
2. Herrera, Rogelio
3. Huertas Coronel, María José

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The Submarine Edifice rocks are the oldest rocks in La Gomera. This edifice is made up of submarine lava and breccias, with marine sediments associated, all of which is transverse by a very dense network of diques. This essay shows the first geochemical and mineralogical submarine volcanic rocks data. These rocks are intensely altered and have an alkaline chemical affinity. Compositions vary between alkaline basalts and trachyandesites, and all of them show typical Within Plate and Ocean Island basalts immobile elements contents. The latter Subaerial Edifice volcanic rocks are similar in composition, although they are slightly less alkaline and they have less evolved types.

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