Results 11 to 20 of about 401 (37)
Contact relationships between syenitic rocks of the Serraria stock and plutonic to hypoabisal mafic rocks of the northern sector of the alkaline suite of Sao Sebastiao Island are described here for the first time, allowing the indication of temporal ...
Marco Timich +5 more
semanticscholar +1 more source
Mafic-ultramafic intrusions are widely known for hosting Ni-Cu-PGE sulfide deposits formed as the result of the segregation and concentration of droplets of liquid sulfide from mafic or ultramafic magma.
semanticscholar +1 more source
Geochemical and isotopic characterization of the Precambrian basement of Sierra del Cuervo, Chihuahua using Sm-Nd and U-Pb isotopes [PDF]
La Sierra del Cuervo, cuyas unidades litológicas comprenden desde el Precámbrico hasta el Cuaternario, está localizada a 30 km al noroeste de la Ciudad de Chihuahua.
Clara Nayeli Chacón Oliva
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La Repartición Volcanic Field (LRVF), located in the northeastern portion of the San Luis Potosí Volcanic Field, presents a variety of volcanic rock types, highlighting it as an exemplary natural laboratory for petrological analysis.
Dario Torres Sanchez +1 more
semanticscholar +1 more source
Las Granulitas de Los Mangos conforman el basamento metamórfico de la Sierra Nevada de Santa Marta. Es una secuencia bandeada de metamorfitas con predominio de gneises, granulitas y anfibolitas. Algunas de las asociaciones mineralógicas son típicas de la
Oswaldo Ordóñez Carmona +2 more
semanticscholar +1 more source
El Complejo El Chilar aflora en el estado de Queretaro y es una unidad sedimentaria muy deformada a tal grado que forma una mezcla tectonica (melange). Este complejo de edad pre-Jurasico Tardio , contiene bloques autoctonos de arenisca o arenisca con
V. D. Alcocer +2 more
semanticscholar +1 more source
O Complexo Intrusivo Santa Angelica faz parte de um dos mais importantes plutons de magmatismo bimodal da Suite G5, geradano estagio pos-colisional (530 – 490 Ma) da Orogenese Brasiliana, esta que deu origem ao Orogeno Aracuai-Ribeira.
Marcela Lopes Zanon +2 more
semanticscholar +1 more source
Tectonothermal ordovician evolution of the western margin of the Famatinian magmatic arc: metamorphism of the mafic and ultramafic rocks of Sierra de La Huerta -Las Imanas (Pampean Ranges, Argentina). An important magmatic and tectonometamorphic activity
J. A. Murra, Edgardo G. Baldo
semanticscholar +1 more source
Matéria Orgânica em Solos Desenvolvidos de Rochas Máficas no Nordeste de Roraima
Soils developed from mafic rocks in Northeastern Roraima are the preferred areas for indigenous shifting cultivation, in view of their high natural fertility.
V. F. Melo, C. Schaefer
semanticscholar +1 more source
Evolución metamórfica de las granulitas y gneises de la Faja máfica-ultramáfica de la Precordillera, norte de Mendoza [PDF]
La estratigrafía eopaleozoica de la Precordillera occidental consiste principalmente en asociaciones de facies silicoclásticas marinas eopaleozoicas vinculadas espacialmente a cuerpos ígneos agrupados en la denominada faja máfica-ultramáfica de ...
Ariza, Juan Pablo +4 more
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