First data on the age of rocks from the central part of the Vitoria-Trindade Ridge (Brazil Basin, South Atlantic)

Skolotnev, S. G.; Bylinskaya, M. E.; Golovina, L. A.; Ipat’eva, I. S.

doi:10.1134/s1028334x11030093

Cited by 28 publications

(17 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(4.2) Ultrabasic-alkaline volcanic intrusions in the submerged portion of Vitória -Trindade Ridge: studies in the submerged portion of the ridge are scarce; samples dredged in the central portion of the Vitória-Trindade Ridge (Colúmbia Seamount, Jaseur Seamount, Dogaressa Bank, and Davis Bank) reveal rocks of ultrabasicalkaline composition (picrite and ancaramite). Dating of the rocks in the upper portion of the volcanic sequence suggests a U-Pb age of 29.8 ± 6.6 Ma (Fodor & Hanan, 2000;Skolotnev et al, 2011). In bottom dredging in Davis and Dogaressa banks revealed the presence of carbonate formations that have been dated Miocene (19-24 Ma) (Skolotnev et al, 2011); and (4.3) Volcanic intrusions of unknown genesis: corresponds to intrusions into the seabed, the composition and age are indeterminate due to the absence studies.…”

Section: Cenozoic Volcanism In the Continental Rise Of The Espírito Smentioning

confidence: 99%

“…Dating of the rocks in the upper portion of the volcanic sequence suggests a U-Pb age of 29.8 ± 6.6 Ma (Fodor & Hanan, 2000;Skolotnev et al, 2011). In bottom dredging in Davis and Dogaressa banks revealed the presence of carbonate formations that have been dated Miocene (19-24 Ma) (Skolotnev et al, 2011); and (4.3) Volcanic intrusions of unknown genesis: corresponds to intrusions into the seabed, the composition and age are indeterminate due to the absence studies.…”

Section: Cenozoic Volcanism In the Continental Rise Of The Espírito Smentioning

confidence: 99%

“…The outcropping portion is located at the western end of the ridge about 600 m above sea level; this area corresponds to Trindade Island (10.2 km²) and the Martin Vaz Archipelago (0.3 km²). Some studies indicate that the origin of the Vitória -Trindade Ridge was associated with Cenozoic tec-tonomagmatic activities that occurred during South American plate displacement under the action of a mantle plume that is currently located under Trindade Island and the Martin Vaz Archipelago (Thomaz Filho & Rodrigues, 1999;Skolotnev et al, 2011). Alves et al (2006) relates the Vitória -Trindade Ridge origin to the Vitória-Trindade Fracture Zone, through which magma from the mantle might have ascended to the surface.…”

Section: Vitória-trindade Ridgementioning

confidence: 99%

See 2 more Smart Citations

Methodological proposal for characterization of marine geodiversity in the South Atlantic: Vitória-Trindade Ridge and adjacent areas, southeast of Brazil

Maia

Castro

2015

RGCI

View full text Add to dashboard Cite

Knowledge of marine geodiversity aids in the understanding of geological processes that operate in the marine domain. These processes are responsible for the creation of landscapes, interference in ocean current patterns and sediment deposition, formation of mineral deposits, triggering of geological hazards and biodiversity development, among other aspects. Marine geodiversity surveys enable an integrated perspective of the dynamics and geological processes occurring in the continental margins and sea basins. They can provide essential information regarding the suitability and limitations of this region during considerations of numerous possibilities for use. This study was aimed at developing a regional-scale model for characterizing marine geodiversity in the Vitória-Trindade Volcanic Seamount Ridge and its adjacent marine areas in the South Atlantic off the coast of southeastern Brazil. The adopted methodology involved defining marine geodiversity compartments in a geographic information system environment by integrating and analyzing spatial variables obtained from bathymetric, geological, and geophysical data as well as by using information available from the literature, government databases, and research institutions. Five representative aspects of geodiversity in the study area were defined, namely, scientific, environmental, economic, academic, and geotouristic characteristics. From this analysis, 13 key areas with peculiar aspects of geodiversity, geoheritage, and potential use were selected for further analyses. For the selected areas, records of scientific and educational interest about the geological history of the opening of the South Atlantic Ocean and formation of the Brazilian continental margin were reviewed and potential areas of use aimed at geotourism and mineral exploration were examined. Restrictions on use related to geologic hazards and anthropogenic actions as well as the legal, technological, and financial aspects arising from the occupation of these spaces were discussed. The information obtained aims to support the actions of the Brazilian government for marine spatial planning with regard to the exploitation of resources and geoconservation of the unique aspects of the geological history of Brazil and the most susceptible habitats. This work also serves as an orientation framework for future surveys of geodiversity in other marine regions.

show abstract

Section: Cenozoic Volcanism In the Continental Rise Of The Espírito Smentioning

confidence: 99%

Section: Cenozoic Volcanism In the Continental Rise Of The Espírito Smentioning

confidence: 99%

Section: Vitória-trindade Ridgementioning

confidence: 99%

See 1 more Smart Citation

Methodological proposal for characterization of marine geodiversity in the South Atlantic: Vitória-Trindade Ridge and adjacent areas, southeast of Brazil

Maia

Castro

2015

RGCI

View full text Add to dashboard Cite

show abstract

“…A versão adotada pelos autores tem resolução muito mais elevada (Figura 2B). Skolotnev et al (2011) também adotou a mesma versão ou similar. Esta versão revela o referido banco como sendo constituído por quatro saliências morfológicas de forma cônica com topos planares de 50m de profundidade (Figura 2B).…”

Section: Metodologiaunclassified

“…Os dois exemplos acima citados sugerem que a batimetria predita desta resolução tem uma boa correlação com as estruturas geológicas determinadas pelas pesquisas sísmicas. Skolotnev et al, 2011). A profundidade máxima é aproximadamente 5300m.…”

Section: Morfologia Do Embasamento Da Margem Continentalunclassified

Caracterização Da Morfologia Submarina Da Cadeia Vitória-Trindade E Áreas Adjacentes, Es, Com Base Na Batimetria Predita Do Topo Versão 14.1

Motoki

Melo

2012

Rev. Bras. Geomorfol.

View full text Add to dashboard Cite

ResumoEste trabalho apresenta análises geomorfológicas da Cadeia Vitória-Trindade, ES, e das áreas adjacentes por meio de batimetria predita com base no banco de dados do TOPO versão 14.1, que foi disponibilizado em 2011. A referida cadeia de montes submarinos tem comprimento aproximado de 950km e direção geral leste-oeste ao longo da latitude S20°30'. É constituída aproximadamente por 30 montes submarinos de forma cônica, que são reconhecidos morfologicamente como edifícios vulcânicos. Os vulcões com altura relativa maior do que 2500m têm confi guração geográfi ca altamente linear com a infl exão na parte central. O trecho oriental tem direção N85°E e o trecho ocidental, N77°W. Os montes submarinos são caracterizados morfologicamente por elevação no sopé, edifício vulcânico principal e topo planar. A elevação no sopé tem altura aproximada de 1000m, os edifícios vulcânicos principais possuem altura variando de 3000m a 5000m e, o topo planar é em torno de 10 km de diâmetro e o diâmetro da base é cerca de 30km. De leste para oeste, a frequência dos montes submarinos aumenta e a elevação no sopé torna-se mais expressiva, indicando que o magmatismo e tectonismo associados aumentam na sua intensidade ao oeste. Na mesma direção, as morfologias de deslizamento fi cam maiores e mais frequentes, sugerindo que os vulcões tornam-se mais antigos nesta direção. Os topos planares dos montes submarinos têm profundidade constante em torno de 50m. A subsidência do assoalho oceânico, que é comum em cadeias de hot-spot, não é observada. Os três bancos do extremo oeste da Cadeia são morfologicamente diferentes dos montes Revista Brasileira de Geomorfologia v. 13, nº 2 (2012) www.ugb.org.br

show abstract

Genesis and evolution of the South Atlantic volcanic islands offshore Brazil

Mohriak

2020

Geo-Mar Lett

View full text Add to dashboard Cite

First data on the age of rocks from the central part of the Vitoria-Trindade Ridge (Brazil Basin, South Atlantic)

Cited by 28 publications

References 9 publications

Methodological proposal for characterization of marine geodiversity in the South Atlantic: Vitória-Trindade Ridge and adjacent areas, southeast of Brazil

Methodological proposal for characterization of marine geodiversity in the South Atlantic: Vitória-Trindade Ridge and adjacent areas, southeast of Brazil

Caracterização Da Morfologia Submarina Da Cadeia Vitória-Trindade E Áreas Adjacentes, Es, Com Base Na Batimetria Predita Do Topo Versão 14.1

Genesis and evolution of the South Atlantic volcanic islands offshore Brazil

Contact Info

Product

Resources

About