Composición y evolución de las lavas de la isla de Branco (Cabo Verde)
| dc.contributor.author | Brändle, José Luis | |
| dc.contributor.author | Hernán, Francisco | |
| dc.contributor.author | Huertas, María José | |
| dc.contributor.author | Ancochea, Eumenio | |
| dc.date.accessioned | 2014-07-16T09:36:29Z | |
| dc.date.available | 2014-07-16T09:36:29Z | |
| dc.date.issued | 2006 | |
| dc.description.abstract | The first data about the composition of lava flows from Branco Island (Cabo Verde) are presented in this work. Most lava flows in the sequence are alkali basalts (Fo84-76 olivine, En44-36 diopside, An83-31 plagioclase) showing geochemical affinity of typical ocean island basalts. The scarce most evolved members are mugearites (olivine absent, En41-31 clinopyroxene, An51-26 plagioclase, and kaersutite). The compositional variations between both the types are explained by crystal fractionation and extraction of pyroxene (up to 29%) and lesser proportions of olivine and Fe and Ti oxides (Cpx: 75; Ol: 21; OxFeTi: 4). The transition to mugearites from the most evolved basalts would mainly be due to extraction of pyroxene (24%) and Fe and Ti oxides (Cpx: 68; Ol: 3; Plag: 5; OxFeTi: 30) | en_US |
| dc.identifier.uri | http://hdl.handle.net/10272/8561 | |
| dc.language.iso | spa | en_US |
| dc.rights | Atribución-NoComercial-SinDerivadas 3.0 España | |
| dc.rights.accessRights | open access | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | |
| dc.subject.other | Oceanic islands | en_US |
| dc.subject.other | Branco | en_US |
| dc.subject.other | Barlovento Islands | en_US |
| dc.subject.other | Cape Verde | en_US |
| dc.subject.other | Alkaline basalts | en_US |
| dc.title | Composición y evolución de las lavas de la isla de Branco (Cabo Verde) | en_US |
| dc.title | Composition and evolution of Branco Island (Cape Verde) | eng |
| dc.type | journal article | en_US |
| dspace.entity.type | Publication |
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