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Subduction Zones of the Caribbean: the sedimentary, magmatic, metamorphic and ore-deposit records. UNESCO/IUGS-IGCP Project 546 Subduction Zones of the Caribbean Abstract This special issue of Geologica Acta, containing fourteen papers, is representative of the aims of IGCP 546, for it covers most of the cutting-edge topics pertaining to the Caribbean’s geological development from the Jurassic…

The imprint of subducion fluids on subducted MORB-derived melts (Sierra del Convento mélange, Cuba) Abstract Major and trace element signatures and Sr–Nd–Pb isotope data for muscovite (Ms)-bearing amphibolite blocks and associated muscovite-bearing trondhjemite and quartz-muscovite rocks from the Sierra del Convento mélange (eastern Cuba) indicate that Proto-Caribbean oceanic crust underwent wet partial melting processes during…

Barium-rich fluids and melts in the subduction environment (La Corea and Sierra del Convento mélanges, eastern Cuba) Abstract Whole-rock compositions of muscovite-bearing amphibolite, trondhjemite, pegmatite and quartz-muscovite rocks from Sierra del Convento and La Corea mélanges (eastern Cuba), as well as mineralogy, record complex circulation of Ba-rich fluids and melts in the subduction environment. Partial…

Tectonic blocks in serpentinite melange (eastern Cuba) reveal large-scale convective flow of the subduction channel Abstract Detailed petrological study of mid-oceanic ridge basalt−derived high-pressure amphibolite blocks from a fragment of the Caribbean subduction channel (La Corea serpentinite-matrix mélange, eastern Cuba) has revealed contrasted zoning patterns of garnet porphyroblasts, including well-defined complex oscillatory prograde-retrograde concentric zoning…

Las cromititas del Complejo Ofiolítico de Camagüey, Cuba: un ejemplo de cromitas ricas en Al Abstract El Complejo Ofiolítico de Camagüey se sitúa en la región centro-oriental de la Isla de Cuba. Este complejo ofiolítico contiene importantes depósitos de cromita rica en Al [Cr/(Cr+Al) = 0.31-0.6] y TiO2 (hasta 1% en peso), y representa el…

Garutiite, (Ni,Fe,Ir) a new hexagonal polymorph of native Ni from Loma Peguera, Dominican Republic Abstract Garutiite (Ni,Fe,Ir) is a new hexagonal polymorph of native Ni discovered in chromitite from Loma Peguera, Dominican Republic. The mineral was identified in heavy mineral concentrates obtained through the use of electric pulse disaggregation (EPD) and hydroseparation (HS) techniques. It…

Sorption of Ni by "lithiophorite-asbolane" intermediates in Moa Bay lateritic deposits, eastern Cuba Abstract The Moa Bay Ni-Co laterite deposits, placed in the so-called Mayari-Baracoa ophiolitic belt (eastern Cuba), are oxide type. Despite its geological relevance and economical impact no detailed studies exist with regards to cristallochemical characterization of Ni incorporated in (or attached to)…

In situ Re–Os isotopic analysis of platinum-group minerals from the Mayarí-Cristal ophiolitic massif (Mayarí-Baracoa Ophiolitic Belt, eastern Cuba): implications for the origin of Os-isotope heterogeneities in podiform chromitites Abstract Chromitite pods in the Mayarí-Cristal ophiolitic massif (eastern Cuba) were formed in the Late Cretaceous when island arc tholeiites and MORB-like back-arc basin basalts reacted with…

Chromite and platinum-group-elements mineralization in the Santa Elena ophiolitic ultramafic nappe (Costa Rica): geodynamic implications Abstract Chromitites associated with strongly altered peridotite from six distinct localities in the Santa Elena ultramafic nappe (Costa Rica) have been investigated for the first time. Santa Elena chromitites commonly display a compositional variation from extremely chromiferous (Cr/(Cr+Al)=0.81) to intermediate…

The metallogenic evolution of the Greater Antilles Abstract The Greater Antilles host some of the world’s most important deposits of bauxite and lateritic nickel as well as significant resources of gold and silver, copper, zinc, manganese, cobalt and chromium. Beginning in Jurassic time, sedimentary exhalative base metal deposits accumulated in marine sedimentary rift basins as…

Sorption of Ni by "lithiophorite-asbolane" intermediates in Moa Bay lateritic deposits, eastern Cuba Abstract The Moa Bay Ni–Co laterite deposits, placed in the so-called Mayari–Baracoa ophiolitic belt (eastern Cuba), are oxide type. Despite its geological relevance and economical impact no detailed studies exist with regards to cristallochemical characterization of Ni incorporated in (or attached to)…

Zircon ages, Sr-Nd-Hf isotopic compositions, and geochemistry of granitoids associated with the northern ophiolite mélange of central Cuba: Tectonic implication for late Cretaceous magmatism in the northwestern Caribbean Abstract The geology of Cuba is representative of the orogenic belt fringing the northwesternmost margin of the Caribbean plate. It is characterized by a tectonic collage made…

Metamorphic evolution of subducted hot oceanic crust (La Corea mélange, Cuba) Abstract Thermobarometric estimates and predictions of theoretical and experimental isochemical P-T phase diagrams for epidote±garnet amphibolite blocks from the serpentinite mélange of La Corea (eastern Cuba) indicate partial melting of subducted oceanic lithosphere occurred at peak metamorphic conditions of ca. 700 °C and 14…

Ba-sequestering Phases in the Subduction Environment (Eastern Cuba Mélanges): Implications for Arc Magmas Abstract In eastern Cuba two serpentinite mélanges (La Corea and Sierra del Convento) bearing high-pressure blocks have been interpreted as fossil subduction channels formed after onset of subduction of the Proto-Caribbean (i.e. Atlantic) lithosphere in Aptian times below the Caribbean plate (García-Casco…

Jadeitite Jade and Related Rocks from the Sierra del Convento Subduction Mélange (Eastern Cuba) Abstract The geological and gemological term “Jade” includes two different types of (quasi-) monomineralic rocks. One is amphibole jade, termed nephrite, a tremolite-actinolite rock with a felted, microcrystalline habit. The other is, pyroxene jade, termed jadeitite, a jadeite rock which varies…

Pristine slab melts crystallized at depth in the subduction environment: End-members of adakites (Eastern Cuba Mélanges) Abstract In the subduction zones, several conditions can be attached and instigate the melting of the slab or the overlying mantle wedge. Under normal subduction zones the geothermal conditions of the slab may not attain P–T conditions for melting…

To Cite this article: Iturralde-Vinent, M.A., García-Casco, A. (2011):"Compendio de Geología de Cuba y del Caribe" [only some chapters], DVD-ROM, Manuel A. Iturralde-Vinent (editor). Published by CITMATEL, Cuba. Avaliable here

U/Pb detrital zircon provenance from Late Cretaceous metamorphic units of the Guajira Peninsula, Colombia: tectonic implications on the collision between the Caribbean arc and the South American margin Abstract Mesozoic metamorphic units exposed along the northern margin of the South American plate record the different stages of subduction evolution or arc-continent collision between the margins…