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|Title: ||Fe-Mn crusts from the Central Atlantic|
|Authors: ||Conceição, Patrícia|
|Keywords: ||Fe-Mn crusts|
|Issue Date: ||2014|
|Abstract: ||The exploration of seamounts south of the Azores during the EMEPC/Açores/G3/2007
campaign allowed for the collection of 30 Fe-Mn crusts from the Atlantis, Great Meteor,
Small Hyeres, Irving and Plato seamounts, as well as from the East Azores Fracture Zone.
These were the first samples of Fe-Mn crusts studied from these seamounts. The Fe-Mn
crusts were analyzed using multiple analytical methods.
The crusts are fairly homogeneous, showing typical textures for this type of occurrences.
The Fe/Mn ratio, patterns and concentrations in rare earth elements, and the great
homogeneity of the crusts lead to the conclusion that they have a hydrogenetic origin,
precipitating directly from seawater. Although the content in Fe and Mn of the crusts is
consistent with data available for the Atlantic, the mean concentration of Co is comparable
to the average values for the Pacific. Cu and Ni show lower values than the ones known
for the Pacific.|
|Appears in Collections:||GEO - Comunicações - Em Congressos Científicos Internacionais|
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