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

Authors

  • J.A. PROENZA FERNÁNDEZ Facultat de Geologia, Universitat de Barcelona
  • R. DÍAZ-MARTÍNEZ Instituto Superior Minero Metalúrgico de Moa
  • A. IRIONDO Centro de Geociencias, Universidad Nacional Autónoma de México and Department of Geological Sciences, University of Colorado at Boulder
  • C. MARCHESI Facultad de Ciencias, Universidad de Granada
  • Joan-Carles Melgarejo i Draper Facultat de Geologia, Universitat de Barcelona
  • F. GERVILLA LINARES Facultad de Ciencias, Universidad de Granada
  • C. J. GARRIDO MARÍN Facultad de Ciencias, Universidad de Granada
  • A. RODRÍGUEZ VEGA Instituto Superior Minero Metalúrgico de Moa
  • J. A. BLANCO-MORENO Instituto Superior Minero Metalúrgico de Moa
  • R. LOZANO-SANTACRUZ nstituto de Geología, Universidad Nacional Autónoma de México

Keywords:

Geochemitry, Volcanic rocks, Primitive-islands arc, Téneme Formation, Cuba.

Abstract

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 << N-type MORB) and typical oceanic arc tholeiites (TiO2= 0.5-0.8 %). Basaltic rocks exhibit low light REE/Yb ratios (La/Yb < 5), typical of intraoceanic arcs and are comparable to Maimón Formation in Dominican Republic (IAT, pre Albian) and Puerto Rican lavas of volcanic phase I (island arc tholeiites, Aptian to Early Albian). The mantle wedge signature of the Téneme Formation indicates a highly depleted MORB-type mantle source, without any contribution of E-MORB or OIB components. Our results suggest that Téneme volcanism represents a primitive oceanic island arc environment. If the Late Cretaceous age (Turonian or early Coniacian) proposed for Téneme Formation is correct, our results indicate that the Cretaceous volcanic rocks of eastern Cuba and the Dominican Republic are not segments of a single arc system, and that in Late Cretaceous (Albian-Campanian) Caribbean island arc development is not represented only by calc-alkaline (CA) volcanic rocks as has been suggested in previous works.

Author Biographies

J.A. PROENZA FERNÁNDEZ, Facultat de Geologia, Universitat de Barcelona

Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals

R. DÍAZ-MARTÍNEZ, Instituto Superior Minero Metalúrgico de Moa

Departamento de Geologí

C. MARCHESI, Facultad de Ciencias, Universidad de Granada

Departamento de Mineralogía y Petrología

Joan-Carles Melgarejo i Draper, Facultat de Geologia, Universitat de Barcelona

Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals

F. GERVILLA LINARES, Facultad de Ciencias, Universidad de Granada

Departamento de Mineralogía y Petrología

C. J. GARRIDO MARÍN, Facultad de Ciencias, Universidad de Granada

Departamento de Mineralogía y Petrología

A. RODRÍGUEZ VEGA, Instituto Superior Minero Metalúrgico de Moa

Departamento de Geología

J. A. BLANCO-MORENO, Instituto Superior Minero Metalúrgico de Moa

Departamento de Geología

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Published

2006-01-11

How to Cite

1.
PROENZA FERNÁNDEZ J, DÍAZ-MARTÍNEZ R, IRIONDO A, MARCHESI C, Melgarejo i Draper J-C, GERVILLA LINARES F, GARRIDO MARÍN CJ, RODRÍGUEZ VEGA A, BLANCO-MORENO JA, LOZANO-SANTACRUZ R. Primitive Cretaceous island-arc volcanic rocks in eastern Cuba: the Téneme Formation. GeA [Internet]. 2006Jan.11 [cited 2021Oct.17];4(1-2):103-22. Available from: https://revistes.ub.edu/index.php/GEOACTA/article/view/105.000000360

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