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Oscilaciones eustáticas e implicaciones climáticas en el tránsito Neógeno-Cuaternario en la isla de Sal (archipiélago de Cabo Verde)

Dabrio, Cristino J. and Zazo Cardeña , Caridad and González Delgado, José Ángel and Goy Goy, José Luis and Cabero del Río, Ana and Hillaire-Marcel, Claude and Ortlieb, L. and Civis Llovera, Jorge and Bardaji, T. (2006) Oscilaciones eustáticas e implicaciones climáticas en el tránsito Neógeno-Cuaternario en la isla de Sal (archipiélago de Cabo Verde). Geotemas, 9 . pp. 71-74. ISSN 1576-5172

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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.


Item Type:Article
Uncontrolled Keywords:Cryptokarst, Sea-level changes, Climate, Cabo Verde, Neogene, Quatemary.
Subjects:Sciences > Geology > Stratigraphic geology
ID Code:10484
Deposited On:21 Apr 2010 11:19
Last Modified:20 Sep 2010 14:08

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