Origin of the Aves Ridge and Dutch–Venezuelan Antilles: interaction of the Cretaceous ‘Great Arc' and Caribbean–Colombian Oceanic Plateau?
In this paper we reassess the geochronology and geochemistry of three dredge hauls from the SE corner of the Aves Ridge (Caribbean Sea) originally sampled in 1968 by Duke University's R.V. Eastward . Two hauls consist of light rare earth element-enriched granitoids with a U–Pb zircon emplacement age of 75.9 ± 0.7 Ma. A further haul contains mostly calc-alkaline island arc basaltic andesites of uncertain age. Petrological, trace element and isotopic constraints indicate that the granitoids have an oceanic crustal source and were formed by melting of the lower arc, oceanic or oceanic plateau cru... Mehr ...
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Dokumenttyp: | Dataset |
Erscheinungsdatum: | 2016 |
Schlagwörter: | Geology / Plateau / R.V / haul / Oceanic / Caribbean / arc / oceanic plateau crust / mantle plume material / subduction / oceanic crustal source / Antilles / SE / Aves Ridge |
Sprache: | unknown |
Permalink: | https://search.fid-benelux.de/Record/base-26631642 |
Datenquelle: | BASE; Originalkatalog |
Powered By: | BASE |
Link(s) : | https://doi.org/10.6084/m9.figshare.3454922.v1 |