Migmatite
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Stratigraphy, petrography and tectonics of the manganese-bearing Buritirama Formation, Northern Carajás Domain, Amazon Craton
Abstract The Buritirama Formation (BF) occurs at the extreme north of the Carajás Province, close to the contact with the Bacajá domain, in the southeastern portion of the Amazon Craton (Brazil). The BF consists of a 40 km long, ca. 3 km wide NW-SE trending structure arranged in four imbricated thrusts that individualize three main stratigraphic units. The
Braz. J. Geol.. Publicado em: 15/04/2019
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2. Setting of dimension stones: study of the tack with adhesive mortar / Fixação de placas de rochas ornamentais: estudo da aderência com argamassa colante
In coverings of walls the setting of dimension stones can be made with metallic inserts or by tack with mortar. In the nestings with mortar the values of tack, for norm, must be superior the 1 MPa and the maximum height of covering cannot exceed 3 m. In the present work, assays with floor tiles of three types of "granites" had been made to compare the tack o
Publicado em: 2007
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3. Contribution to Crushed Stone Petrography / Contribuição à petrografia de pedra britada
It is extremely important to know the physical and chemical properties of aggregate mineralogical composition so that the construction where they will be used is not compromised. In this sense, knowing the petrography and mineralogy is as necessary as knowing the geology of the rock deposit to be developed as a source of crushed stone. The main purpose of th
Publicado em: 2007
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4. Granitic Magma generation and migration through continental crust: detailed studies in granites and migmatites from Nazaré Paulista region, SP (SE Brazil) / Geração e migração de magmas graníticos na crosta continental: estudos de detalhe em granitos e migmatitos da região de Nazaré Paulista (SP)
As condições de geração e migração de magmas na crosta continental foram investigadas a partir de estudos de detalhe em dois afloramentos de granitos anatéticos tipo Nazaré Paulista (Nappe Socorro Guaxupé, região de Atibaia, SP), utilizando como ferramentas principais a geoquímica de elementos maiores e traços em rochas e minerais e a isotopia Sr
Publicado em: 2006
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5. CaracterizaÃÃo geolÃgica da regiÃo situada entre as localidades de Paranatama e Currais Novos (PE), porÃÃo Centro-Norte do DomÃnio TectÃnico Pernambuco-Alagoas, ProvÃncia Borborema
This thesis presents the geological characteristics of an important region inserted in the Pernambuco-Alagoas Tectonic Domain (PEALTD), considered as an integrated part of a Neoproterozoic orogenic belt that borders the northern portion of the SÃo Francisco Craton. In this context, the main geological units that outcrop in the PEALTD are: 1) Paleoproterozoi
Publicado em: 2005
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6. Geologia, geoquÃmica e avaliaÃÃo econÃmica do migmatito "Rosa Imperial", domÃnio meridional da ProvÃncia Borborema, nordeste brasileiro
As unidades litolÃgicas constituintes do migmatito âRosa Imperialâ sÃo representantes de complexos metamÃrficos de alto grau de possÃvel idade MesoproterozÃica no MaciÃo/Terreno Pernambuco-Alagoas, DomÃnio Meridional da ProvÃncia Borborema. Identificou-se a ocorrÃncia de dois domÃnios, um supracrustal ou paraderivado, geologicamente pertencente a
Publicado em: 2002
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7. Petrologia dos granitóides brasilianos associados à zona de cisalhamento Remígio-Pocinhos(PB)
The Brasiliano Cycle in the Seridó Belt (NE Brazil) is regarded mostly as a crustal reworking event, characterized by transcurrent or transpressional shear zones which operated under high temperature and low pressure conditions. In the eastern domain of this belt- the so-called São José de Campestre Massif (SJCM), a transtensional deformation regime is ev
Publicado em: 1998
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8. Mecanismos de alojamento de magmas granitóides :exemplo do plúton de Japi(RN)
This dissertation describes the igneous suites of the Japi granitoid pluton, intrusive in the Paleoproterozoic gneiss-migmatite complex of the eastern domain of the Seridó Belt, northeastern Brazil. Field relations show that the pluton is affected by strong deformation associated to the Brasiliano orogeny (known as the D3 phase) , with a NW-trending extensi
Publicado em: 1998