Publication: Procesos de transformación y neoformación de esmectitas en los
materiales volcanoclásticos de la Isla de la Palma (Canarias)
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Publication Date
1999
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Sociedad Geológica de España
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Abstract
Clay minerals from the volcaniclastic deposits of the three different sedimentary settings (paleosols
continental lacustrine and transitional fan delta) have been studied by X-ray, MEB y TEM. The clay fraction
of Ihis sediments consist largely of smectite (saponite) with minor irregular chlorile-smectite mixed layers
and illite: they occur as replacement of ferromagnesian minerals, plagioclase microlites and glass matrix of
the volcarenite and they are inferred to be direct diagenetic alteratíon products of volcanic components.