publication . Article . 2006

A new chronostratigraphical and evolutionary model for La Gomera: Implications for the overall evolution of the Canarian Archipelago

E. Ancochea; F. Hernán; M.J. Huertas; J.L. Brändle; R. Herrera;
Open Access English
  • Published: 01 Oct 2006
  • Publisher: Elsevier Science Publishers
  • Country: Spain
Abstract
A review of the general volcano-stratigraphy and geochronology of La Gomera, one of the lesser known Canary Islands, has led to the establishment of a new evolutionary model. The oldest edifice corresponds to the submarine stage built up between 20 and 15 Ma. The construction of the Submarine Edifice was followed by an important break in the activity (about 4 Ma) and deep erosion of the edifice. About 10.5 Ma ago, the main present-day edifice (the Old Edifice 10.5–6.4 Ma) emerged, which was also submarine in its initial phases. Two different main stages are distinguishable. The first stage was represented by a large, some 22 km wide basaltic shield volcano (the ...
Subjects
free text keywords: Petrología, Geochemistry and Petrology, Geophysics, Geology, Magma, Volcano, geography.geographical_feature_category, geography, Felsic, Lava, Paleontology, Neogene, Shield volcano, Geochemistry, Geomorphology, Stratovolcano, Archipelago
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