Results 31 to 40 of about 6,489 (209)
PETROLOGIA DO GRUPO SERIDÓ; CURRAIS NOVOS - PARELHAS (RN)
Revista Brasileira de Geociências, 1985 This work deals with the metamorphism of the Serido schists in the region Currais Novos-Parelhas, of the Serido schist belt. The study involved the petrography of the rocks, the chemistry of rocks and selected minerals and the aplication of geothermometers and geobarometers.
THEODOMIRO GAMA JÚNIOR +1 more
openaire +2 more sources
ChemSystemsChem, Volume 8, Issue 1, January 2026.XX XX ABSTRACT The pharaoh's serpent reaction, the thermodecomposition of mercury thiocyanate in air, is a classic chemical demonstration. We analyse and characterize the reaction products, composed of two different phases, graphitic carbon nitride, C3${\rm C} _3$N4${\rm N} _4$, and metacinnabar, HgS.
Carlos Pimentel +4 more
wiley +1 more source
Petrologia e Mineralogia - v. 1 [PDF]
, 2018 A produção deste trabalho é independente e surgiu da idéia e colaboração de professores, alunos e ex-alunos do curso de Geologia do Centro de Ciências Exatas, Naturais e da Saúde, da Universidade Federal do Espírito Santo. Estão contidos neste livro 5
Candotti, Calvin da Silva +3 more
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High-Precision Geochronology [PDF]
, 2013 High-precision geochronology is integral to testing hypotheses regarding the correlation, causes, and rates of events and processes in Earth history.
Kuiper, Klaudia F., Schmitz, Mark D.
core +2 more sources
El miocè de la muntanya de Montjuïc : estratigrafia, sedimentologia, petrologia i diagènesi [PDF]
, 1999 La ciutat de Barcelona va néixer apadrinada per dos turons, el Mont Taber i el Mont Jovis. La primera n'ha estat el bressol sobre el qual va créixer; la segona, anomenada actualment Montjuïc, ha subministrat una part important de la matèria prima amb la ...
Gómez-Gras, David +2 more
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Angewandte Chemie, Volume 137, Issue 48, November 24, 2025.Chemische Gärten sind selbstorganisierte abiotische Strukturen mit „lebensähnlichen” Formen. Hier zeigen wir, dass solche Prozesse auch nach Zugabe konzentrierter Sulfatlösungen zu festen Calciumsalzen ablaufen und sogenannte Gipsgärten ergeben. Die dafür nötigen Bedingungen sind weitgehend kompatibel mit den geochemischen Verhältnissen auf dem frühen ...
Selina Reigl +5 more
wiley +1 more source
Geologia USP. Série Científica, 2020 This article presents geochemical characteristics of the alkaline rocks of Rio Bonito intrusive complex, State of Rio de Janeiro, Brazil, which is constituted mainly by nepheline syenite. The fractional crystallisation of this magma decreases K2O/(Na2O +
Daniel Adelino da Silva +6 more
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Integració dels sistemes de classificació de les roques: eina d'aprenentatge transversal per al foment d'equips docents en l'àmbit de la Geologia. [PDF]
, 2017 As a response to the need to implement a comprehensive tool for the classification of rocks, an interdisciplinary and interuniversity teaching team formed by teachers and students has been constituted.
Alfonso Abella, María Pura +5 more
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Garnet: Witness to the Evolution of Destructive Plate Boundaries [PDF]
, 2013 Thanks to its unique chemical and mechanical properties, garnet records evidence of rocks\u27 paths through the crust at tectonic plate boundaries. The compositions of garnet and coexisting mineral phases permit metamorphic pressure and temperature to be
Caddick, Mark J., Kohn, Matthew J.
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Petrology of Gameleira potassic lamprophyres, São Francisco Craton
Anais da Academia Brasileira de Ciências, 2012 Gameleira lamprophyres are dykes and mafic microgranular enclaves associated with the shoshonitic Gameleira monzonite. This association belongs to the Paleoproterozoic alkaline magmatism from Serrinha nucleus, northeast Brazil.
Jorge Plá Cid +3 more
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