Evolution of the eastern volcanic ridge of the Canary Islands based on new K-Ar data

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doi: 10.1016/0377-0273(92)90085-R
Authors:Coello, Juan; Cantagrel, Jean-Marie; Hernán, Francisco; Fúster, José-María; Ibarrola, Elisa; Ancochea, Eumenio; Casquet, César; Jamond, Colette; Díaz de Téran, Jóse-Ramón; Cendrero, Antonio
Author Affiliations:Primary:
Universidad de La Laguna, Departamento de Edafologia y Geologia, La Laguna, Tenerife, Spain
Other:
Université Clermont-II, France
Universidad Complutense, Spain
Universidad de Cantabria, Spain
Volume Title:Journal of Volcanology and Geothermal Research
Source:Journal of Volcanology and Geothermal Research, 53(1-4), p.251-274. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0377-0273
Publication Date:1992
Note:In English. 67 refs.; illus. incl. 6 tables, sects., geol. sketch maps
Summary:The results of 64 new K-Ar age determinations, together with 32 previously published ages, show that, after a period of erosion of the basal complex, Miocene volcanic activity started at approx 20 m.y. in Fuerteventura and 15 m.y. in Lanzarote, forming a tabular succession of basaltic lavas and pyroclastics with a few salic dykes and plugs. The series includes five separate volcanic edifices, each with its own eruptive history. All the edifices show a similar general sequence (fissural eruptions, erosion, multi-vent volcanism), repeated at different periods in different parts of the E islands of the Canaries. The model of growth of the Series I edifices is comparable to those in Tenerife and La Gomera; long periods of activity, sometimes > 6 m.y., with pulses separated by gaps. However, salic and intermediate differentiates, frequent in Tenerife and La Gomera, are very scarce in these islands. The Fuerteventura-Lanzarote ridge shows a decrease in volcanic activity with time, and also a certain SSW-NNE polarity in the temporal development of volcanism. [R.E.S.]
Subjects:Absolute age; Cenozoic; Dates; Igneous rocks; K/Ar; Miocene; Neogene; Tertiary; Volcanic rocks; Volcanism; Atlantic Ocean Islands; Canary Islands; Fuerteventura; Lanzarote; Evolution
Abstract Numbers:93M/3599
Record ID:1993002030
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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