Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  5
País:  France
Título:  Ocean crust geothermal processes : a perspective from the vantage of leg 54 drilling
Autores:  Hekinian, Roger
Rosendahl, Bruce R.
Natland, James H.
Data:  1980
Ano:  1980
Palavras-chave:  Histoire Ifremer
Resumo:  Two distinct sedimentary facies produced by sea-floor hydrothermal activity were cored during Deep Sea Drilling Project Leg 54. The first is equivalent to the typical basal iron- and manganese-rich, clayey mud recovered at many DSDP sites. It was sampled as a dispersed component throughout the cores taken in small sediment ponds in several sites within 120 km of the East Pacific Rise at 9°N. We infer that this component was originally deposited as iron hydroxides dispersed from high-temperature vents over the axial magma chamber of the East Pacific Rise. In the sediments, the iron hydroxides have reacted diagenetically with siliceous microfossil tests and detrital clays to form K- and Fe-rich clays with variable SiO(2)/Fe(2)O(3) and Fe(2)O(3)/Al(2)O(3), ratios. [NOT CONTROLLED OCR]
Tipo:  Text
Idioma:  Inglês
Identificador:  http://archimer.ifremer.fr/doc/1980/publication-5328.pdf
Editor:  U. S. Government
Relação:  http://archimer.ifremer.fr/doc/00000/5328/
Formato:  application/pdf
Fonte:  Initial Reports of the Deep Sea Drilling Project (U. S. Government), 1980 , Vol. 54 , P. 267-294
Direitos:  U. S. Government
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional