Tectonomagmatic setting and provenance of the Santa Marta schists, northern Colombia: insights on the growth and approach of Cretaceous Caribbean oceanic terranes to the South American continent Abstract Metamorphosed volcano-sedimentary rocks accreted to the northern South American continental margin are major vestiges of the Caribbean oceanic plate evolution and its interactions with the continent. Selected…
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2010: Jadeitite jade occurrence from the Sierra del Convento mélange (eastern Cuba)
Jadeitite jade occurrence from the Sierra del Convento mélange (eastern Cuba) Abstract A new jadeitite jade locality has been discovered in the serpentinite–matrix subduction mélange of the Sierra del Convento (eastern Cuba) in a context associated with tectonic blocks of garnet–epidote amphibolite, tonalitic–trondhjemitic epidote gneiss and blueschist. The jade outcrops occur as blocks surrounded by…
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2009: Zoning of laurite (RuS2)-erlichmanite(OsS2): implications for the genesis of PGM in ophiolite chromitites
Zoning of laurite (RuS2)-erlichmanite(OsS2): implications for the genesis of PGM in ophiolite chromitites Abstract We have investigated several chromite deposits in the Mayarí-Baracoa Ophiolite Belt (eastern Cuba) and in the Dobromirtsi metamorphosed ultramafic (ophiolitic) massif (SE Bulgaria) with regard to zoning in platinum-group minerals (PGM) of the laurite (RuS2)-erlichmanite (OsS2) solid solution series. We found…
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2009: Ni-sepiolite-falcondoite in garnierite mineralization from Falcondo Ni-laterite deposit, Dominican Republic
Ni-sepiolite-falcondoite in garnierite mineralization from Falcondo Ni-laterite deposit, Dominican Republic Abstract New chemical and structural data on sepiolite-falcondoite in garnierite veins from the Falcondo Ni-laterite deposits, central Dominican Republic, are reported. Samples of Ni-sepiolite-falcondoite vary in colour from whitish green to green depending on the NiO content (wt.%) and the amount of silica present. The…
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2009: The Loma Peguera ophiolitic chromitite (Central Dominican Republic): a source of new platinum group minerals (PGM) species
The Loma Peguera ophiolitic chromitite (Central Dominican Republic): a source of new platinum group minerals (PGM) species Abstract Platinum group element (PGE) rich ophiolitic chromitites associated with the Loma Peguera harzburgitic mantle have been investigated for Platinum group minerals (PGM) using electric pulse disaggregation (EPD) and hydroseparation (HS) techniques. Combination of these two techniques allows…
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2009: Structure of the accretionary prism, and the evolution of the Paleogene northern Caribbean subduction zone in the region of Camagüey, Cuba
Structure of the accretionary prism, and the evolution of the Paleogene northern Caribbean subduction zone in the region of Camagüey, Cuba Abstract The deformation history of sedimentary units incorporated in the North Cuban fold and thrust belt in the Paleocene to middle–late Eocene was associated with major shortening between the Caribbean and North American plates.…
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2009: A new jadeitite jade locality (Sierra del Convento, Cuba): First report and some petrological and archaeological implications.
A new jadeitite jade locality (Sierra del Convento, Cuba): First report and some petrological and archaeological implications. Abstract A new jadeitite jade locality has been discovered in the serpentinite-matrix subduction mélange of the Sierra del Convento (eastern Cuba) in a context associated with tectonic blocks of garnet-epidote amphibolite, tonalitic–trondhjemitic epidote gneiss, and blueschist. The mineral…
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2009: Fifty-five-million-year history of oceanic subduction and exhumation in the northern edge of the Caribbean plate (Sierra del Convento mélange, Cuba)
Fifty-five-million-year history of oceanic subduction and exhumation in the northern edge of the Caribbean plate (Sierra del Convento mélange, Cuba) Abstract Petrological and geochronological data of six representative samples of exotic blocks of amphibolite and associated tonalite-trondhjemite from the serpentinitic mélange of the Sierra del Convento (eastern Cuba) indicate counterclockwise P–T paths typical of material…
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2009: Textural Relations and Minerals Compositions of Garnierite Ores Using X-Ray Images
Textural Relations and Minerals Compositions of Garnierite Ores Using X-Ray Images Abstract “Garnierites” are significant ore minerals in the saprolitic horizons of Falcondo nickel laterite deposits in the Dominican Republic. The garnierite mineralization mainly occurs as millimetric to centimetric-thick veins. Other occurrences include tension fracturefillings, anastomizing veins, boxwork fabric, coatings on joints, often displaying slickensides…
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2009: Field trip to the subduction and arc complexes of central Cuba
To Cite this article: García-Casco, A., Iturralde-Vinent, M.A., Bernal, L. (2009): "Field trip to the subduction and arc complexes of central Cuba". IGCP 546 Subduction Zones of the Caribbean. Field trip Guidebook, 38 p. http://www.ugr.es/~agcasco/igcp546/Cuba09/FieldtripGuide_Cuba09.pdf
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2009: Metamorfismo de los esquistos verdes y anfibolitas pertenecientes a los Esquistos de Santa Marta, Sierra Nevada de Santa Marta (Colombia): ¿Registro de la colisión entre el arco Caribe y la margen Suramericana?
Metamorfismo de los esquistos verdes y anfibolitas pertenecientes a los Esquistos de Santa Marta, Sierra Nevada de Santa Marta (Colombia): ¿Registro de la colisión entre el arco Caribe y la margen Suramericana? Abstract Los Esquistos de Santa Marta localizados en el segmento NW de la Sierra Nevada de Santa Marta, en el Caribe Colombiano, corresponden…
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2008: Geology, fluid inclusions and sulphur isotope composition of the El Cobre VHMS deposit, Southern Cuba
Geology, fluid inclusions and sulphur isotope composition of the El Cobre VHMS deposit, Southern Cuba Abstract The El Cobre deposit is located in eastern Cuba within the volcanosedimentary sequence of the Sierra Maestra Paleogene arc. The deposit is hosted by tholeiitic basalts, andesites and tuffs and comprises thick stratiform barite and anhydrite bodies, three stratabound…
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2008: Paleogene Foredeep Basin Deposits of North-Central Cuba: A Record of Arc-Continent Collision between the Caribbean and North American Plates
Paleogene Foredeep Basin Deposits of North-Central Cuba: A Record of Arc-Continent Collision between the Caribbean and North American Plates Abstract Paleogene deposits of north-central Cuba have been identified as a deformed foredeep basin, whose stratigraphy recorded very well the collision of the Bahamas—Proto-Caribbean realm (North American plate) with the Caribbean plate, a process that occurred…
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2008: Latest Cretaceous collision/accretion between the Caribbean Plate and Caribeana: Origin of metamorphic terranes in the Greater Antilles
Latest Cretaceous collision/accretion between the Caribbean Plate and Caribeana: Origin of metamorphic terranes in the Greater Antilles Abstract Metasedimentary complexes dispersed all along the northwestern branch of the Caribbean orogenic belt between Yucatan and the Virgin Islands provide evidence for a major tectonic event of latest Cretaceous (Late Campanian-Early Paleocene) age that played a key…
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2008: Detrital zircon geochronology of Jurassic sandstones of western Cuba (San Cayetano Formation): Implications for the Jurassic paleogeography of the NW Proto-Caribbean
Detrital zircon geochronology of Jurassic sandstones of western Cuba (San Cayetano Formation): Implications for the Jurassic paleogeography of the NW Proto-Caribbean Abstract Clastic sediments of the early (?) to late Jurassic (Oxfordian) San Cayetano Formation of western Cuba are interpreted to reflect syn-rift sedimentation coeval with the breakup of Pangaea. This sedimentary unit is the…
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2008: Geochemical and Sr-Nd isotope signatures of pristine slab melts and their residues (Sierra del Convento mélange, eastern Cuba)
Geochemical and Sr-Nd isotope signatures of pristine slab melts and their residues (Sierra del Convento mélange, eastern Cuba) Abstract Major and trace element geochemical signatures and Sr–Nd isotope data of MORB-like amphibolite blocks and associated leucocratic low-K trondhjemitic rocks from the Sierra del Convento mélange (Cuba) indicate that oceanic crust underwent partial melting processes during…
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2008: Partial melting and counterclockwise P-T path of subducted oceanic crust (Sierra del Convento, E Cuba)
Partial melting and counterclockwise P-T path of subducted oceanic crust (Sierra del Convento, E Cuba) Abstract Partial melting of subducted oceanic crust has been identified in the Sierra del Convento mélange (Cuba). This serpentinite-matrix mélange contains blocks of mid-ocean ridge basalt (MORB)-derived plagioclase-lacking epidote ± garnet amphibolite intimately associated with peraluminous trondhjemitic–tonalitic rocks. Field relations,…
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2007: Magmatic paragonite in trondhjemites from the Sierra del Convento mélange, Cuba
Magmatic paragonite in trondhjemites from the Sierra del Convento mélange, Cuba Abstract In the Sierra del Convento mélange peraluminous trondhjemitic-tonalitic rocks, formed by partial melting of subducted oceanic crust at ca. 15 kbar, 700 °C, contain millimeter-sized crystals of paragonite that appear to be of magmatic origin. These crystals are replaced by plagioclase and quartz…
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2007: Chromite composition and platinum-group mineral assemblage of PGE-rich Loma Peguera chromitites, Loma Caribe peridotite, Dominican Republic
Chromite composition and platinum-group mineral assemblage of PGE-rich Loma Peguera chromitites, Loma Caribe peridotite, Dominican Republic Abstract The Loma Peguera chromitites are located in the central part of Loma Caribe peridotite in the Cordillera Central of Dominican Republic. The chromitite bodies are hosted in typical mantle peridotites, have small size (less than a few meters…
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2007: Geochemistry of cretaceous magmatism in Eastern Cuba: recycling of North American continental sediments and implications for subductions polarity in the Greater Antilles paleo-arc
Geochemistry of cretaceous magmatism in Eastern Cuba: recycling of North American continental sediments and implications for subductions polarity in the Greater Antilles paleo-arc Abstract We present whole-rock major- and trace-element and Nd-Sr-Pb radiogenic isotope data for Cretaceous igneous suites from eastern Cuba. These rocks are related to the Greater Antilles paleo-island arc magmatism and have…
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