Primitive Cretaceous island-arc volcanic rocks in eastern Cuba: the Téneme Formation

Primitive Cretaceous island-arc volcanic rocks in eastern Cuba: the Téneme Formation

The Téneme Formation is located in the Mayarí-Cristal ophiolitic massif and represents one of the three Cretaceous volcanic Formations established in northeastern Cuba. Téneme volcanics are cut by small bodies of 89.70 ± 0.50 Ma quarz-diorite rocks (Río Grande intrusive), and are overthrusted by ser...

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Veröffentlicht in:Acta geologica hispanica 2006, Vol.4 (1-2), p.103-122
Hauptverfasser: Proenza Fernández, Joaquín Antonio, Díaz-Martínez, Roberto, Iriondo, Alexander, Marchesi, Claudio, Melgarejo i Draper, Joan-Carles, Gervilla Linares, Fernando, Garrido Marín, Carlos Jesús, Rodríguez Vega, Antonio, Blanco-Moreno, J. A., Lozano-Santacruz, Rufino
Format: Artikel
Sprache:eng
Schlagworte:
Basalt
Cretaceous
Cuba
Geochemistry
Geochemitry
Island arc
Island arcs
Primitive
Primitive-Island arc
Primitive-islands arc
Titanium dioxide
Téneme Formation
Volcanic rocks
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Zusammenfassung:The Téneme Formation is located in the Mayarí-Cristal ophiolitic massif and represents one of the three Cretaceous volcanic Formations established in northeastern Cuba. Téneme volcanics are cut by small bodies of 89.70 ± 0.50 Ma quarz-diorite rocks (Río Grande intrusive), and are overthrusted by serpentinized ultramafics. Téneme volcanic rocks are mainly basalts, basaltic andesites, andesites, and minor dacites, and their geochemical signature varies between low-Ti island arc tholeiites (IAT) with boninitic affinity (TiO2 < 0.4 %; high field strength elements
ISSN:1695-6133
0567-7505
1696-5728
DOI:10.1344/105.000000360