Show simple item record

dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorCastellanos-AlarcónCarlos, Oscar Mauricio
dc.contributor.authorRíos-Reyes, Carlos Alberto
dc.contributor.authorMantilla-Figueroa, Luis Carlos
dc.identifier.issnISSN: 2346-2183
dc.description.abstractThe early Cretaceous Ciénaga Marbles that crop out in the NW foothills of the Santa Marta Massif (Colombian Caribbean region) present an epigenetic mineral assemblage (skarn-type), overprinting the metamorphic mineral assemblage previously developed along the regional metamorphic history that affected this unit. The skarn-type mineralogy allows at least three paragenetic contexts to be distinguished, which are represented by the following neoformed minerals: (a) garnet, forsterite, diopside, titanite, wollastonite and calcite (early anhydrous metamorphic stage), (b) actinolite, tremolite, allanite and clinohumite (metasomatic or hydrated stage), and (c) chlorite, serpentine, sepiolite and quartz (late low temperature retrograde stage, probably due to infiltration of descending meteoric waters). The skarn-type mineralogy is observed as alteration halos developed around porphyritic granodiorites emplaced as sills between anisotropy planes related to metamorphic regional foliation of rock that are considered to be the causative bodies of the skarntype mineralogy. Zircon U-Pb ages obtained from granodioritic bodies yielded an age of 55.5±0.7 Ma (Ypresian, Early Eocene). The formation of the skarn-type mineralogy in the Ciénaga Marbles is temporarily related to the formation and emplacement of hydrated silicate masses that were generated at the beginning of the subduction polarity change (i.e. when the Caribbean oceanic plate began to subduct beneath South American continental plate).
dc.publisherUniversidad Nacional de Colombia (Sede Medellín). Facultad de Minas.
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Dyna
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.subject.ddc62 Ingeniería y operaciones afines / Engineering
dc.titleOccurrence of a skarn-type mineralogy found in Ciénaga Marbles, located in the NW foothills of the Santa Marta Massif (Colombia)
dc.typeArtículo de revista
dc.relation.referencesCastellanos-AlarcónCarlos, Oscar Mauricio and Ríos-Reyes, Carlos Alberto and Mantilla-Figueroa, Luis Carlos (2016) Occurrence of a skarn-type mineralogy found in Ciénaga Marbles, located in the NW foothills of the Santa Marta Massif (Colombia). DYNA, 83 (196). pp. 69-79. ISSN 2346-2183
dc.subject.proposalCiénaga Marbles
dc.subject.proposalSanta Marta massif
dc.subject.proposalskarn-type mineralogy
dc.subject.proposalzircon U-Pb geochronology
dc.subject.proposalCaribbean Plate

Files in this item


This item appears in the following Collection(s)

Show simple item record

Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit