Category Archives: Colombia

2023: Mantle-hosted ophiolitic chromitites from Colombia: implications for petrogenesis and geodynamic evolution

Mantle-hosted ophiolitic chromitites from Colombia: implications for petrogenesis and geodynamic evolution Abstract Chromitite bodies can be found within ophiolitic mantle sections in three locations in Colombia: Medellín, Planeta Rica, and La Guajira. These chromitites are typically massive pods that are often surrounded by lateritic soil in Medellín and Planeta Rica, or small discoidal bodies in…
read more

2020: Petrology and geochemistry of high-Al chromitites from the Medellin Metaharzburgitic Unit (MMU), Colombia

Petrology and geochemistry of high-Al chromitites from the Medellin Metaharzburgitic Unit (MMU), Colombia Abstract The Medellin Metaharzburgitic Unit (MMU), emplaced onto the western continental margin of Pangea during Triassic time, is located in the Central Cordillera of Colombia and consists of metaharzburgites, minor metadunites and chromitite bodies (Patio Bonito and San Pedro ore deposits). The…
read more

2020: The Petrologic Nature of the “Medellín Dunite” Revisited: An Algebraic Approach and Proposal of a New Definition of the Geological Body

The Petrologic Nature of the “Medellín Dunite” Revisited: An Algebraic Approach and Proposal of a New Definition of the Geological Body Abstract The “Medellín Dunite”, the main ultramafic body of the Central Cordillera of Colombia, constitutes a fragment of oceanic lithospheric mantle formed at a back–arc basin/incipient arc scenario emplaced onto the western continental margin…
read more

2014: Late Jurassic terrane collision in the northwestern margin of Gondwana (Cajamarca complex, eastern flank of the central cordillera, Colombia)

Late Jurassic terrane collision in the northwestern margin of Gondwana (Cajamarca complex, eastern flank of the central cordillera, Colombia) Abstract Medium-grade metabasites and metapelites from the Cajamarca Complex (Central Cordillera of Colombia) are in fault contact with the Jurassic Ibague batholith and show a penetrative foliation, locally mylonitic, suggesting intense dynamic–thermal metamorphism. The amphibolites are…
read more

2012: Geochemistry and petrology of metabasites of the Arquia Complex (Santa Fe de Antioquia and Arquia Creek, Colombia): Geodynamic implications

To Cite this article: Ruiz-Jímenez, E. C., Blanco-Quintero, I.F., Toro Toro, L.M., Moreno-Sánchez, M., Vinasco, C.J., García-Casco, A., Morata, D., Gómez-Cruz, A. (2012): Geochemistry and petrology of metabasites of the Arquia Complex (Santa Fe de Antioquia and Arquia Creek, Colombia): Geodynamic implications. Boletín de Ciencias de la Tierra, 32, 65-8O. ISSN 012-3630.  http://intranet.minas.medellin.unal.edu.co/index.php?option=com_docman&task=doc_download&gid=2291&Itemid=57
read more
  • 2025: The gradual shift from forearc basalt-like to boninite-like magmatism during intra-oceanic subduction-initiation recorded by ophiolitic chromite deposits from Cuba

    The gradual shift from forearc basalt-like to boninite-like magmatism during intra-oceanic subduction-initiation...
    Read more
  • Recent Comments