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Insights Into Speleothems From Lava Tubes Of The Galapagos Islands (Ecuador): Mineralogy And Biogenicity

AuthorsDaza, Raquel ; Miller, A. Z. ; Sáiz-Jiménez, Cesáreo ; Gázquez, Fernando; Calaforra, José María; Forti, Paolo; Rull, Fernando ; Medina, Jesús ; Sanz-Arranz, Aurelio; Martínez-Frías, J.
Issue Date6-Feb-2016
PublisherInternational Union of Speleology
Citation7th International Symposium of Vulcan speleology At Ocean View, Big Island, Hawaii (USA)
AbstractDifferent types of hard and soft speleothems (stalactites, stalagmites, columns, crusts, flowstones, micro-gours and botryoidal coralloids) have been observed throughout lava tubes in the Galapagos archipelago, Ecuador. Three lava tubes were studied in this work: Gallardo and Royal Palm volcanic caves (Santa Cruz Island) and Sucre Cave (Isabela Island). The studied speleothems were mainly formed by opal, calcite and clay minerals, including plagioclase and pyroxenes from the basaltic host rock. Rarely, iron oxides, gypsum were found in some speleothems, which were interpreted as alteration products of the primary volcanic materials. Field emission scanning electron microscopy revealed abundant filamentous
Description7 páginas.-- 3 figuras.-- 21 referencias.-- Comunicación oral presentada en el 7th International Symposium of Vulcan speleology At Ocean View, Big Island, Hawaii (USA) February 6-12, (2016)
Publisher version (URL)http://www.cavepics.com/IVS17/Proceedings.html
Appears in Collections:(IGEO) Comunicaciones congresos
(IRNAS) Comunicaciones congresos
(MNCN) Comunicaciones congresos
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