| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Ocean crust geothermal processes : a perspective from the vantage of leg 54 drilling
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| Autores: |
Hekinian, Roger
Rosendahl, Bruce R.
Natland, James H.
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| Data: |
1980
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| Ano: |
1980
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| Palavras-chave: |
Histoire Ifremer
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| 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]
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/1980/publication-5328.pdf
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| Editor: |
U. S. Government
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| Relação: |
http://archimer.ifremer.fr/doc/00000/5328/
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| Formato: |
application/pdf
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| Fonte: |
Initial Reports of the Deep Sea Drilling Project (U. S. Government), 1980 , Vol. 54 , P. 267-294
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| Direitos: |
U. S. Government
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