Publication: Oscilaciones eustáticas e implicaciones climáticas en el tránsito
Neógeno-Cuaternario en la isla de Sal (archipiélago de Cabo Verde)
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Publication Date
2006
Authors
Dabrio, Cristino J.
Zazo Cardeña , Caridad
González Delgado, José Ángel
Cabero del Río, Ana
Hillaire-Marcel, Claude
Ortlieb, L.
Civis Llovera, Jorge
Bardaji, T.
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Publisher
Sociedad Geológica de España.
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Abstract
Solution pipes interpreted as a cryptokarst separate large-scale cross-bedded megaforms of shallowmarine
calcarenites deposited at the Neogene-Quatemary transition in Cape Verde Islands. This
implies that depositional phases were followed by subaerial exposure of the cemented calcarenites
during subsequent falls of sea level, and accumulation of unconsolidated eolianites which supported
a vegetal cover that promoted the cryptokarst. The process was repeated several times.
A widespread, more recent karstification with red silty clay filling of voids may represent the aridification
of climate at the beginning oi the Quaternary and the increased supply of Saharan dust by
Trade Winds.