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Mostrando ítems 31-40 de 102
Anotaciones geoquímicas para exploración de esmeraldas en la región muzo-coscuez con base en la relación na/k y elementos traza
(Departamento de Geociencias, 1996)
Este estudio comprende el área noroccidental del cinturón esmeraldífero en la región Muzo-Coscuez, estribaciones occidentales de la Cordillera Oriental de Colombia en el Departamento de Boyacá, conformado por sedimentitas ...
Alkaline magmatism in the Amambay area, NE Paraguay: The Cerro Sarambi complex
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
The Early Cretaceous alkaline magmatism in the northeastern region of Paraguay (Amambay Province) is represented by stocks, plugs, dikes, and dike swarms emplaced into Carboniferous to Triassic-Jurassic sediments and ...
Petrology and geochemical characterization of the mantle sources in the northwest region of the Paraná continental flood basalt province
(Instituto de Geociências - USPSão Paulo, 2014)
The Paraná continental flood basalt (PCFB) province, one of the largest continental provinces preserved on Earth, has been the focus of many studies and is still a matter of debate. The PCFB covers more than 70% of the ...
Nonporphyritic chondrules and chondrule fragments in enstatite chondrites: Insights into their origin and secondary processing
(Wiley, 2015-08)
Sixteen nonporphyritic chondrules and chondrule fragments were studied inpolished thin and thick sections in two enstatite chondrites (ECs): twelve objects fromunequilibrated EH3 Sahara 97158 and four objects from equilibrated ...
Age, composition, and source of the Macururé Mafic Suite, Southern Borborema Province, Brazil
(Sociedade Brasileira de Geologia, 2020)
Volcanismo alcalino involucrado en el proceso de apertura de la cuenca pensilvaniana, provincia de MendozaAlkaline volcanism involved in the rifting process of the pensilvanian basin, Mendoza province
(Instituto Superior de Correlación Geológica, 2013-12)
Las rocas volcánicas inter-carboníferas de la Cordillera Frontal de Mendoza comprenden la Asociación Volcánica Meso-Varíscica, compuesta por diques (hasta 5 m de espesor) y coladas vesiculares de colores negruzcos. ...