Category Archives: 2014

2014: Geodynamic implications of ophiolitic chromitites in the La cabaña ultramafic bodies, Central Chile

Geodynamic implications of ophiolitic chromitites in the La cabaña ultramafic bodies, Central Chile Abstract Chromitites (>80% volume chromite) hosted in two ultramafic bodies (Lavanderos and Centinela Bajo) from the Palaeozoic metamorphic basement of the Chilean Coastal Cordillera were studied in terms of their chromite composition, platinum-group element (PGE) abundances, and Re-Os isotopic systematics. Primary chromite…
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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…
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2014: Chromitites in ophiolites: How, where, when, why? Part II. The crystallization of chromitites

Chromitites in ophiolites: How, where, when, why? Part II. The crystallization of chromitites Abstract A review of previous work relevant to the formation of concentrations of chromite in peridotites from ophiolitic (s.l.) sequences highlights some of the key problems in understanding the complex processes involved. This review forms the basis for chromitite-genesis models that integrate…
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