Stratigraphy, Chronology, and Paleoenvironmental Reconstruction of the Quaternary Sedimentary Infilling of a Volcanic Tube in Fuerteventura, Canary Islands |
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| Authors: | Juan J Coello Carolina Castillo Esther Martín Gonzlez |
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| Institution: | a Departamento de Edafología y Geología, Facultad de Biología, Universidad de La Laguna, Avenida Astrofísico Fco. Sánchez, s/n, 38206, La Laguna, Tenerife, Spain;b Departamento de Biología Animal, Facultad de Biología, Universidad de La Laguna, Avenida Astrofísico Fco. Sánchez, s/n, 38206, La Laguna, Tenerife, Spain |
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| Abstract: | La Cueva del Llano is a volcanic tube of Pleistocene age on Fuerteventura Island, in the Canary Islands. Part of it is infilled with sediments of external origin. These deposits are exceptional in stratigraphic complexity and thickness compared with other known tube infillings, and they comprise nine stratigraphic units deposited in five phases. In Phase I, which has not been dated, sedimentation of cinder from a nearby cone occurred. Phase II began ca. 16,830 ± 900 14C yr B.P., whereas phase IV dates to 9280 ± 370 14C yr B.P. The interpretation of sedimentary features shows that phases III and V correspond to a dry climate, similar to the present one, whereas the climate was much wetter during phases II and IV. This paleoclimatic sequence agrees with those suggested by the study of deposits formed in other sedimentary environments, not only in Fuerteventura but on other islands of the Canary group and the Sud-Maroc region. |
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| Keywords: | volcanic tubes Quaternary sedimentary infilling Fuerteventura Canary Islands |
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