Directory of Open Access Journals (DOAJ)
Produção Nacional
Revisado por pares
Nélson Joaquim Reis, Umberto G. Cordani, Luís Emanoel Alexandre Goulart, Marcelo Esteves Almeida, Vanessa da Silva Oliveira, Victor Câmara Maurer, Ingo Wahnfried,
The Demeni-Mocidade domain (DMD) comprises a large area of granitoid rocks, located on the border between the states of Roraima and Amazonas, Brazil, within the inner part of the Ventuari-Tapajos Province of the Amazonian Craton, where large amounts of granitoid rocks, formed between 2.0-1.8 Ga, are predominant. This study examines six granite samples collected from the Mocidade and Demeni mountains, which are related in time to the Uatuma Silicic Large Igneous Province (SLIP), which, in turn, covers ...
Tópico(s): Geochemistry and Geologic Mapping
2021 - | Journal of the Geological Survey of Brazil
... the Journal of the Geological Survey of Brazil -JGSB -enters its sixth year of activities.Growth is ... In 2022, two innovations were introduced in the JGSB's processing: (i) the publication of the accepted ... a given period.In this classification edition, the JGSB was placed in the B4 stratum, both in ... in Brazil, as is the case of the JGSB.
2023 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
... the Journal of the Geological Survey of Brazil – JGSB – to the Geoconservation theme. I am grateful to ... best possible. And, obviously, the authors who accepted JGSB as the venue for publishing your research, without ...
Tópico(s): Geotourism and Geoheritage Conservation
2021 - | Journal of the Geological Survey of Brazil
Amrita Singh, Carmine Fedele, Renato V. Iozzo, Lucia R. Languino,
... Foundation Post-Doctoral Research Fellowship to CF; a JGSBS Alumni Association Graduate Student Travel Fellowship to AS. ...
Tópico(s): Prostate Cancer Treatment and Research
2015 - American Association for Cancer Research | Cancer Research
Marcelo Esteves Almeida, Antonio Charles da Silva Oliveira, João Orestes Schneider Santos, Joseneusa Brilhante Rodrigues, Gilles Ruffet,
The Juruena Terrain (Rondônia-Juruena Province) in the southeastern Amazonas State shows a NW-SE dextral shear zones system denominated Roosevelt-Guariba Transpressive Belt (RGTB).The RGTB was generated in response to intracontinental crustal reworking, juxtaposing Paleoproterozoic Juruena granitic-gneiss and coeval supracrustal associations.This granitic-gneiss basement shows high-K calcalkaline (Teodósia Suite) to transitional I-to A-type (Igarapé das Lontras Suite) signatures, produced in a continental ...
Tópico(s): Geochemistry and Elemental Analysis
2022 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Paulo de Tarso Amorim Castro, Kátia Leite Mansur, Úrsula Ruchkys de Azevedo, Rosely Aparecida Liguori Imbernon,
The last thirty years have seen major changes in the relationship between humanity and the Earth system.The United Nations Conference on Environment and Development, RIO 92, brought both the society and the scientific community, in general, the perception of the need for an integrated view of the Earth and the meaning of the irresponsible intensity of the exploitation of natural resources, by definition restricted to the planet.From this convention emerged integrative initiatives in the natural, ...
Tópico(s): Geotourism and Geoheritage Conservation
2021 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Gabriel Machado da Silva, Atlas Vasconcelos Corrêa Neto, Mariana Brando Soares, Felipe Emerson André Alves, Nicollas de Oliveira Ferreira Santos, Piero Azevedo Berquó de Sampaio, Vitor Diniz Silveira, Gabriel Faria Gonçalves,
The Faina gold deposit, located in the Pitangui Greenstone Belt, NW of the Quadrilátero Ferrífero, Brazil, has produced gold from the oxidized portion of the deposit between June 2010 and June 2013. However, the deeper hypogene (sulfide-rich) section of the deposit has shown lower-than-expected recovery rates after direct leaching, leading to the interruption of gold production. This research presents a multi-methodological approach (drill core description, multi-element geochemical analyses and mineral ...
Tópico(s): Minerals Flotation and Separation Techniques
2025 - | Journal of the Geological Survey of Brazil
Nathália Mota Epifânio, Átila Augusto Stock da Rosa, Joseline Manfroi, Liliana Essi,
The Dicroidium flora, composed of different genera of fossil plants, has its first records dating back to the Permian, expanded significantly in diversity in the Triassic, occupying several regions of the Gondwanan territory, becoming a biostratigraphic landmark for the Triassic. In Brazil, this paleoflora is found in the sedimentary rocks of the Santa Maria region, state of Rio Grande do Sul, in locations close to the Passo das Tropas Creek, an informal type section of the Passo das Tropas Member, ...
Tópico(s): Bryophyte Studies and Records
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
This work reports how minerals at Redondão kimberlite pipe may be inferred through the integrated interpretation of airborne gamma-ray spectrometry data and multispectral images derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER).Using several processing techniques (e.g., K, eTh, and eU concentration maps; K/eTh, K/eU, and eU/eTh ratio maps; K image inverse map; profile analysis for radiometric data; and spectral indexes and mineral distribution and abundance maps for ...
Tópico(s): Radioactivity and Radon Measurements
2024 - | Journal of the Geological Survey of Brazil
Patrícia Mara Lage Simões, Marcelo Eduardo Dantas,
The Morro Redondo Complex is composed of plutonic and volcanic alkaline rocks.This igneous complex is part of the Poços de Caldas -Cabo Frio Magmatic Alignment (PCCFA).This study aims to contribute to the understanding of the petrogenesis of the rocks in the Morro Redondo complex and, thereby, contribute to the debate on the genesis of the PCCFA.In this work, we conducted analyses of whole-rock geochemistry, 40 Ar/ 39 Ar thermochronology, U-Pb geochronology on zircon grains, and Rb-Sr, Sm-Nd, and ...
Tópico(s): earthquake and tectonic studies
2024 - | Journal of the Geological Survey of Brazil
Ana Beatriz Furtado Carvalho, Rodrigo Rodrigues Adôrno, Lívia Cardoso da Silva Rodrigues, Carolina Zabini,
The Três Barras Farm section is an outcrop located at the northern border of the Paraná Basin, in Midwest Brazil. Rocks of the Ordovician-Silurian age are found in this section, represented by the Iapó and Vila Maria formations of the Rio Ivaí Group, which directly overlay the crystalline basement. The Devonian rocks of the Furnas Formation are also observable at the top of the Três Barras section. Although the first fieldwork conducted there dates back to 1985, the section has been visited by different ...
Tópico(s): Geological formations and processes
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Mônica Mazzini Perrotta, Carlos Roberto de Souza Filho, Ana Paula Justo, Mônica Mazzini Perrotta, L. Goulart de Araujo, Juliano Alves de Senna, Thais Danielle Oliveira Gasparin, Manoel Augusto Corrêa da Costa, João Luís Carneiro Naleto,
Reflectance spectral libraries are essential reference databases for the mineralogical characterization of geological samples analyzed using visible and infrared spectroscopy. Since 2011, the Geological Survey of Brazil has been actively developing a comprehensive database of reflectance spectral signatures, based on samples collected from systematic geological mapping and mineral resource projects across the Brazilian territory. This spectral library is now available on a digital platform hosted ...
Tópico(s): Mineral Processing and Grinding
2024 - | Journal of the Geological Survey of Brazil
Felipe L. Pinheiro, Átila Augusto Stock Da‐Rosa,
The Early Triassic is pivotal for understanding the recovery and diversification of post-extinction biotas, marking the initial emergence or early diversification of many modern life forms. This phase holds dual significance as it establishes the groundwork for contemporary biodiversity evolution and provides crucial insights into managing present ecological challenges. Focused efforts on the Sanga do Cabral Formation in the Paraná Basin unveil a critical opportunity for studying Early Triassic ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Frank Gurgel Santos, Mário da Costa Campos Neto, Valderez P. Ferreira, Anelise Losangela Bertotti,
Serpentinites from the central portion of the Rio Piranhas-Seridó Domain (RPSD), in the northeast portion of the Borborema Province (BP), occur in association with the Caicó Complex gneisses, paragnaisses/schists of the Seridó Group. Serpentinites, which were sampled in two localities near the city of São Tomé-RN, are melanocratic rocks, fine-grained, greenish in color and foliation consistent with the regional trend. The mineralogical composition is primarily composed of serpentine, which occurs ...
Tópico(s): Geochemistry and Geologic Mapping
2024 - | Journal of the Geological Survey of Brazil
Evandro Luiz Klein, Lila Costa Queiroz, Antônia Silva, Antonio Charles da Silva Oliveira, Camila Franco Basto, Carlos Eduardo Oliveira, César Lisboa Chaves, Cintia Gaia da Silva, CHARLES PHILLIPE DE LUCENA ALVES, Daniel Augusto de Miranda, Edney Smith de Moraes Palheta, Felipe Grandjean da Costa, Felipe José da Cruz Lima, Francisco Ther Ríos, I. C. S. Marques, Jorge Henrique Laux, Marcelo de Souza Marinho,
Tópico(s): Extraction and Separation Processes
2024 - | Journal of the Geological Survey of Brazil
Evelyn Aparecida Mecenero Sanchez, Leonardo Frederico Pressi, Gislaine Ámores Batillani, Ana Clara Mendes Caixeta, Alessandra Mendes Carvalho Vasconcelos, Ana Clara O. Magalhães, Gilberto A. S. Medeiros,
The Quiricó Formation is the richest fossiliferous unit of Sanfranciscana Basin. Its paleoasis context (a paleolake record inserted in a desert setting) includes vertebrates, diverse microfossils, and paleobotanical content. This study presents new findings regarding the fossil content of the formation, focusing on discoveries made at the Pripiri Geosite, located in Coração de Jesus municipality, northern part of the state of Minas Gerais, Brazil. Among the discoveries are poorly informative fragments ...
Tópico(s): Geological formations and processes
2024 - | Journal of the Geological Survey of Brazil
Claus Fallgatter, Paulo Sérgio Gomes Paim, Victoria Buso, Carolina Aquino, Deise Marli da Silveira,
This field guide provides a detailed outcrop logistics, access and description of the sand-rich turbidite deposits of the Taciba Formation (Rio do Segredo Member), the uppermost unit of the Pennsylvanian Itararé Group (Paraná Basin), which crops out in the Santa Catarina State, southern Brazil.This area has become a classic destination for professional' field courses and students interested in outcrop analogous to offshore turbidite reservoirs.Although some of the outcrops have been widely described, ...
Tópico(s): Hydrology and Sediment Transport Processes
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Luiz D'el-Rey Silva, André Menezes Sabóia,
The belt of basic-ultrabasic rocks within the Curaçá River Valley Province of the Bahia State, northeastern Brazil, has been known for enclosing several Cu-orebodies that helped sustain the industrial development of Brazil in the last five decades. Caraíba, Vermelhos, Surubim, Terra do Sal, Angicos, Sussuarana are the most prominent of these deposits. The Caraíba Cu-Orebody, so far the most important of all, is part of a body of Archean hypersthenites and norites that underwent poly-deformation ...
Tópico(s): earthquake and tectonic studies
2024 - | Journal of the Geological Survey of Brazil
Cassio Roberto da Silva, Orquídia Neves, Eduardo Paim Viglio, Bernardo Leite,
Tópico(s): Maternal and Neonatal Healthcare
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Carlos Eduardo Miranda Mota, Arthur Silva, Fred Jourdan, Mauro César Geraldes, Guilherme Loriato Potratz,
The Morro Redondo Complex is composed of plutonic and volcanic alkaline rocks.This igneous complex is part of the Poços de Caldas -Cabo Frio Magmatic Alignment (PCCFA).This study aims to contribute to the understanding of the petrogenesis of the rocks in the Morro Redondo complex and, thereby, contribute to the debate on the genesis of the PCCFA.In this work, we conducted analyses of whole-rock geochemistry, 40 Ar/ 39 Ar thermochronology, U-Pb geochronology on zircon grains, and Rb-Sr, Sm-Nd, and ...
Tópico(s): earthquake and tectonic studies
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Renato Pereira Lopes, Jamil Pereira, Matias do Nascimento Ritter, Eduardo Guimarães Barboza, Felipe Caron, Sérgio R. Dillenburg, Maria Luiza Corrêa da Câmara Rosa,
The southern coastal plain of Rio Grande do Sul state hosts essential fossil records of both marine and terrestrial faunas that have provided invaluable information about the geological and environmental Quaternary history of southern Brazil. These fossils are found in surface and subsurface deposits on sites stretching from the continental shelf up to coastal lagoons inland. The sites on the shelf are time-averaged lag deposits formed of marine and terrestrial fossils exhumed and mixed together ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Roberto Gusmão de Oliveira, Nitzschia Regina Rodrigues Domingos, Walter E. Medeiros, Vladimir Cruz de Medeiros, Frank Gurgel Santos, Marcus Flávio Nogueira Chiarini, Marilia Rodrigues,
Gamma-ray spectrometry, as well as magnetic and gravity data, are used to investigate the geophysical signatures of the Archean nuclei of the Borborema Province.Natural radioactivity, magnetic anomalies, and residual Bouguer gravity anomalies of the Archean nuclei exhibit distinct signatures in relation to adjacent Proterozoic domains.Gamma-ray spectrometry data reveal eTh enrichment in relation to K and eU contents in Archean units.Assuming that K and U were the dominant isotopes, this relative ...
Tópico(s): earthquake and tectonic studies
2024 - | Journal of the Geological Survey of Brazil
Flávio Augusto Pretto, Leonardo Kerber, Agustín G. Martinelli, João Pedro Saldanha, Rômulo Cenci, Rodrigo Scalise Horodyski, Gustavo Corrêa De Almeida, Helena da Silva Bertol, Daniel de Simão‐Oliveira, Débora Moro, Marina Bento Soares, César Leandro Schultz,
The Linha São Luiz Geosite is one of the most remarkable outcrops from the central region of Rio Grande do Sul state, southern Brazil. With more than 20 meters of vertical exposure, the locality preserves records of distinct sedimentary episodes, and one of the richest fossil assemblages known in southern Brazil. After a quarter of a century from the first expeditions to the site, the Linha São Luiz still yields new discoveries, registering exquisitely preserved fossils from micro and macrovertebrates, ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Fernanda Soares de Miranda Torres, Pedro Augusto dos Santos Pfaltzgraff,
The study of geodiversity provides insight into the potential and limitations of an area's physical environment, making it highly valuable for public and private managers in supporting the development of appropriate land use and occupation proposals for a region. In this perspective, the Geodiversity Map of the coast of the state of Pernambuco was created by combining the Geodiversity Map of the Recife Metropolitan Region (RMR) and the Geodiversity Map of the Southern Coast of Pernambuco. Both were ...
Tópico(s): Geotourism and Geoheritage Conservation
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Sérgio Luiz Martini, Ana Maria Dreher,
The magnetitic Cu-Au (IOCG) deposits of north Carajás, Amazonian Craton, Brazil, are hosted in the Neoarchean (2.76 Ga), dominantly basaltic-greywacke Itacaiúnas metavolcanic-sedimentary sequence that evolved in a continental rift setting.The mainstream interpretation of these deposits is that they are epigenetic, though they do show common features observed in syngenetic deposits of volcanogenic affiliation.The features include hosting tectonic and geological settings with coeval granitic and mafic ...
Tópico(s): Geochemistry and Elemental Analysis
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Rodrigo Scalise Horodyski, Hermínio Ismael de Araújo‐Júnior,
To enhance our understanding of Brazilian paleontological heritage, we have launched the special edition titled “Brazilian Fossiliferous Sites with Paleobiological Importance”. A total of seven manuscripts have been accepted and published in Vol. 7 No. SI2 (2024). Recognizing our fossil heritage is essential for the scientific and cultural advancement of Brazil. We strongly encourage paleontologists to continuously publish papers on our rich fossiliferous deposits.
Tópico(s): Paleontology and Evolutionary Biology
2024 - | Journal of the Geological Survey of Brazil
Produção Nacional
Revisado por pares
Marcelo Esteves Almeida, C.C. Santos, João Henrique Larizzatti, Daliane Eberhardt, Sérgio Maia Melo, Alessandra Moreira,
At the end of the 19th century, classical geochemistry arrived in Brazil through Henri Gorceix, being primarily used in his studies of mineralogy and petrology. Meanwhile, exploration geochemical arrives later, in the mid-20th century. But it was only in the late 1960s that systematic survey at the national level began, starting with the creation of CPRM - Geological Service of Brazil, culminating in over 50 years of uninterrupted activities, providing coverage of the entire country at various scales: ...
Tópico(s): Geochemistry and Geologic Mapping
2024 - | Journal of the Geological Survey of Brazil
Cleide Regina Moura da Silva, Tânia Lindner Dutra, Thièrs Wilberger, Geysson de Almeida Lages, Vladimir Cruz de Medeiros,
Tópico(s): Paleontology and Evolutionary Biology
2024 - | Journal of the Geological Survey of Brazil
Marcus Flávio Nogueira Chiarini, Loiane Moraes Rocha, Elton Luiz Dantas, Reinhardt A. Fuck, Elias Martins Guerra Prado, Raphael Teixeira Corrêa, Jaime Estevão Scandolara, Antônio Augusto Soares Frasca, Joseneusa Brilhante Rodrigues, André Menezes Sabóia,
Gamma-ray spectrometric responses of Archean rocks were studied in order to define a characteristic signature for these rocks.As the half-life of the most frequent Thorium isotope ( 232 Th -half life of 14.05 Ga) is more than 3 times longer relative to the Uranium isotope ( 238 U -half life of 4.50 Ga), a low response of radiation intensity in the spectral range of decay series of Uranium relative to that of Thorium is expected for Archean rocks.Based on this theoretical aspect, associated with gamma- ...
Tópico(s): earthquake and tectonic studies
2024 - | Journal of the Geological Survey of Brazil