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handle: 10261/7399
[ES] Se ha verificado el estudio mineralógico de unas arenas de la playa de San Sebastián de La Gomera, aplicando las técnicas de la granulometría, calcimetría, separación de las fracciones ligera y pesada mediante líquidos pesadas y difractometría de rayos X. El porcentaje de minerales pesaidos sobrepasa el 90 por ciento. La especie mineralógica más importante y abundante es la augita y los sedimentos carecen de cuarzo y son muy escasos los bioclastos. El material que integra el sedimento es en su totalidad de origen volcánico y esta playa ha sido formada por los acarreos del barranco que parte de Lomo Fragoso, del cual es terminación litoral, y por la abrasión costera.
[EN] The mineralogical study of sand from the beach of San Sebastián de La Gomera has taken plaoe, applying techniques of granulometry, calcimetry, separation of the light and heavy fractions trough heavy liquids and difractometry of X rays. The percentage of heavy minerals excedes a0 per cent. The nlost important and abundant mineralogical species is the augite and the sediments lack quartz and the biaclasts are very scarce. The material which forms the sediment is completely valcanic in iBs origin and has been formed by the movement of the chasm which breaks away from Lomo Fragoso of which it is a terminal point, and by the costal abrasion.
Peer reviewed
Mineralogia, Islas Canarias, Arenas
Mineralogia, Islas Canarias, Arenas
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