17 documents found, page 1 of 2
Faciologia e evolução dos depósitos eólicos costeiros do oeste do Ceará (Brasil...
Mesquita, Áquila Ferreira; Silva Filho, Wellington Ferreira da; Duarte, Cynthia Romariz; Bezerra, Francisco Hilário Rego; Vasconcelos, David LinoThis study aimed to characterize the morphology and evolution of coastal deposits in western Ceará state based on the variation of the sea level in the Late Holocene, thus reconstructing the paleogeography of the area. Based on the petrography and facies analysis, fi ve sedimentary facies and their original depositional forms (facies associations) have been identifi ed as follows: coarse-grained sandstone with ...
Sustentabilidade ambiental da extração de áridos: a lavra de areia no canal ati...
Nobre Filho, Pedro Aguiar; Sabadia, José Antonio Beltrão; Duarte, Cynthia Romariz; Magini, Christiano; Nogueira Neto, José de AraújoThis study analyzes the environmental sustainability of sand extraction along the active bed of Canindé river, Paramoti municipality, Ceará. The mined material was sampled, characterized and qualified for use as aggregate in construction. The deposit was cubed, resulting in measured reserves, indicated and total one. The sand extraction is carried out continuously in the active bed of the Canindé river, since t...
Age of magmatic events in the Eopaleozoic Jaibaras Basin, NE Brazil: Constraint...
Garcia, Maria da Gloria Motta; Parente, Clóvis Vaz; Silva Filho, Wellington Ferreira da; Almeida, Afonso Rodrigues deThe Late Neoproterozoic to Early Paleozoic Jaibaras Basin is located between the southeastern margin of the Medio Coreaú Domain (MCD) and northwestern edge of the Cear a Central Domain (CCD) of the Borborema Province, Northeastern Brazil, which is also the location of the main axis of the Transbrasiliano Lineament. The lower volcano-sedimentary rocks in the Jaibaras Basin are composed of two lower Vendian-Cambr...
Syngenetic and diagenetic features of evaporite-lutite successions of the Ipubi...
Nascimento Junior, Daniel Rodrigues do; Silva Filho, Wellington Ferreira da; Freire Junior, José Gervásio; Santos, Felipe Holanda dosThe Ipubi Formation in the Araripe Basin (Northeast Brazil) has evaporite-lutite successions rich in gypsum, a mineral of great regional economic relevance, a highlighted stratigraphic mark, and also a natural boundary for underlying successions potentially analogous to “Pre-Salt” hydrocarbon reservoirs of the Brazilian coastal basins. In this study, syngenetic and diagenetic aspects of the Ipubi Formation at S...
Principal component analysis and morphostructural characterization of a portion...
Duarte, Cynthia Romariz; Cordeiro, Elicius Feijó; Costa, José Higor Batista Araújo da; Sabadia, José Antonio Beltrão; Salgueiro, Ana RitaThis study used Landsat 5 Thematic Mapper (5-TM) images in the morphostructural characterization of the shallow continental shelf of the eastern coast of Ceará (CE), in the Jaguaribe river mouth. The dam built near the river mouth to transpose the water towards Fortaleza, CE, ensures good water transparency since little of the river-carried sediment reaches the sea. The used image was captured on date and time ...
Estruturas rasas na margem equatorial ao largo do nordeste brasileiro (estado d...
Silva Filho, Wellington Ferreira da; Castro, David Lopes; Corrêa, Iran Carlos Stalliviere; Freire, George Satander SáThe area of study is located in the atlantic equatorial margin shelf offshore Ceara State (Brazil), being originated during the formation of the Equatorial Atlantic (Aptian). The residual gravity data highlight offshore continental framework structures, specially the Transbrasiliano Lineament and its offshore portion (Transversal Lineament). The continental margin basins (Ceara and offshore Potiguar) were also ...
Revealing the diversity of amber source plants from the Early Cretaceous Crato ...
Seyfullah, Leyla J.; Roberts, Emily A.; Schmidt, Alexander R.; Ragazzi, Eugenio; Anderson, Ken B.; Nascimento Junior, Daniel Rodrigues doBackground: Amber has been reported from the Early Cretaceous Crato Formation, as isolated clasts or within plant tissues. Undescribed cones of uncertain gymnosperm affinity have also been recovered with amber preserved in situ. Here, we provide multiple lines of evidence to determine the botanical affinity of this enigmatic, conspicuous cone type, and to better understand the diversity of amber-source plants p...
Organic and isotopic geochemistry of evaporites and shales of the Santana Group...
Pontes, Naedja Vasconcelos; Chagas, Daniel Bezerra das; Souza, Ana Clara Braga de; Nascimento Junior, Daniel Rodrigues doEven being the more studied of the interior basins of Northeast Brazil, the Araripe Basin still lacks research in organic geochemistry designed to support interpretations of depositional systems and conditions of formation. This work aims to investigate the organic behavior of evaporites and shales from the Santana Group (Lower Cretaceous), as well as discuss their role in the evolution of its depositional syst...
Conhecimento de alunos de uma escola pública sobre geologia e paleontologia: de...
Brito, Lucas Adriano Rodrigues; Pereira, Erick Marcio de Oliveira; Silva Filho, Wellington Ferreira daO conhecimento geológico ainda é, de modo geral, pouco difundido na sociedade. Esta hipótese pode ser confirmada através de levantamento realizado durante uma exposição itinerante montada em uma escola de ensino público através do projeto de extensão “Terra Em Movimento: Exposições Itinerantes Como Meio de Divulgação da Geologia” (Departamento de Geologia/Pró-Reitoria de Extensão-UFC). A exposição foi realizada...
Projeto Terra em Movimento: popularização da geologia e paleontologia
Pereira, Erick Marcio de Oliveira; Brito, Lucas Adriano Rodrigues; Silva Filho, Wellington Ferreira daO projeto tem como objetivo divulgar a Geologia junto a estudantes de ensino médio como meio para a conscientização da sociedade (atual e futura) sobre a importância do conhecimento geológico. O método consiste na realização de exposições e palestras sobre Geologia, com mostras de minerais, rochas, fósseis, processos geológicos, importância econômica, atuação profissional, ferramentas de trabalho e informações ...