Results 21 to 30 of about 319 (119)

The Canastra Group in the type-area, Tapira region, southwest of Minas Gerais State, Brazil [PDF]

open access: yesGeologia USP. Série Científica, 2012
This work aimed at describing the Neoproterozoic evolution of a Southern Brasília Fold Belt segment, in Tapira area(southwest of Minas Gerais state, Brazil), using detailed geologic mapping.
Carlos Humberto da Silva   +4 more
doaj  

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 7, Page 1263-1287, July 2026.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta   +9 more
wiley   +1 more source

U-Pb zircon SHRIMP data from the Cana Bravalayered complex: new constraints for themafic-ultramafic intrusions of Northern Goiás,Brazil

open access: yesOpen Geosciences, 2015
The Cana Brava Complex is the northernmostand least well known layered intrusion of a discontinuousbelt of mafic-ultramafic massifs within the Brasilia Belt,which also comprises theNiquelândia and Barro Alto complexes.Available geochronological data from
Giovanardi T.   +5 more
doaj   +1 more source

Sedimentary fluvial processes at the margin of an eolian sand sea: the example of the Botucatu Formation, Paraná Basin [PDF]

open access: yesBrazilian Journal of Geology
The Upper Jurassic to Lower Cretaceous Botucatu Formation of the Paraná Basin consists primarily of trough cross-bedded eolian sandstone deposited in an intracontinental desert.
Leandro Gustavo da Silva Albino   +4 more
doaj   +1 more source

Araguainha Dome, Brazil: A polygonal impact structure due to a complex pre‐impact regional structural framework

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 7, Page 1355-1385, July 2026.
Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes   +5 more
wiley   +1 more source

U-Pb SHRIMP and Sm-Nd geochronology of the Silvânia Volcanics and Jurubatuba Granite: juvenile Paleoproterozoic crust in the basement of the Neoproterozoic Brasília Belt, Goiás, central Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2001
U-Pb SHRIMP and Sm-Nd isotopic ages were determined for felsic metavolcanic rocks from the Silvânia Sequence and Jurubatuba Granite in the central part of the Brasília Belt.
FISCHEL DANIELLE P.   +3 more
doaj  

Avaliação do Impacto Farmacoeconômico do Reaproveitamento de Overfill de Medicamentos Prescritos com Dose Fechada

open access: yesJornal de Assistência Farmacêutica e Farmacoeconomia
Objetivos: Avaliar o impacto farmacoeconômico do reaproveitamento de sobras de frascos de medicamentos prescritos com dose fechada em um ambulatório de oncologia do Distrito Federal.
Lorenna Moreno Araujo   +4 more
doaj   +1 more source

Evaluating the sustainability of mineral water consumption using multi‐scale hydrogeophysics in Caxambu, Brazil

open access: yesNear Surface Geophysics, Volume 24, Issue 3, Page 234-251, June 2026.
Abstract A better understanding of the near‐surface aquifer system of the Caxambu Water Park, located in the Minas Gerais State, Brazil, has been achieved. The study aimed to identify groundwater reservoirs and flow patterns and contribute to the hydrogeological conceptual model using a multi‐scale geophysical approach.
Emanuele F. La Terra   +5 more
wiley   +1 more source

Reconstruction and Comparison of P-T Paths in the Andrelândia Nappe System, Southern Brasília Fold Belt, MG [PDF]

open access: yesGeologia USP. Série Científica, 2010
The Andrelândia Nappe System consists of three main nappes, from bottom to top: the lower Andrelândia nappe, themiddle Liberdade nappe and the upper Três Pontas-Varginha nappe and associated klippen, Pouso Alto, Aiuruoca, Carvalhosand Serra da Natureza ...
Rafael Gonçalves da Motta   +3 more
doaj  

Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS

open access: yesGeostandards and Geoanalytical Research, Volume 50, Issue 2, Page 369-389, June 2026.
Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro   +7 more
wiley   +1 more source

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