Geochemistry and genesis of behind-arc basaltic lavas from eastern Nicaragua

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F10%3A10081514" target="_blank" >RIV/00216208:11310/10:10081514 - isvavai.cz</a>
Alternative codes found
RIV/00025798:_____/10:00000111
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Geochemistry and genesis of behind-arc basaltic lavas from eastern Nicaragua
Original language description
The petrology and chemistry of the Behind the Volcanic Front (BVF) lavas from eastern Nicaragua illustrate the complex nature of sources and processes. The older, Early Miocene (~17 Ma) low-Ti basalts--andesites are characterized by a strong LILE/HFSE depletion. They are interpreted as relics of Early Miocene volcanic arc, largely analogous to the extinct Coyol arc further W. The prevalent high-Ti lavas are represented both by alkaline (Quaternary trachybasalts: Volcán Azul and Kukra Hill) and subalkaline (basalts--basaltic andesites: Late Miocene, ~ 11 Ma Great Corn Island and Quaternary, Pearl Lagoon) volcanic rocks. All probably represent small-volume decompression melts of an OIB-like source with a strong Galápagos mantle imprint. The positive Sr--Nd isotopic correlation indicates an interaction between this component and a depleted mantle modified slightly by subduction-related influx of mainly Sr and Li. This feeble signal stems most likely from the Miocene convergence episode.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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