The distribution of rare earth and minor elements in manganese nodules, micronodules and sediments along an east-west transect in the southern Pacific

Autor:	P. Stoffers, G. P. Glasby, H. Kunzendorf, W. L. Plüger
Rok vydání:	1993
Předmět:	Terrigenous sediment Geochemistry chemistry.chemical_element Mineralogy Geology Manganese Ferromanganese Hydrothermal circulation Antarctic Bottom Water chemistry Geochemistry and Petrology Seawater Neutron activation analysis Transect
Zdroj:	Lithos. 30:45-56
ISSN:	0024-4937
DOI:	10.1016/0024-4937(93)90005-w
Popis:	Rare earth and other trace elements in manganese nodules, micronodules and surface sediments from a transect in the Southwestern Pacific Basin at 42°S were determined by instrumental neutron activation analysis. The data include analyses of 23 manganese nodules, 10 micronodules and 15 sediments. The REE distributions along the transect suggest that three major processes were involved in the accumulation of these elements. These are: (1) adsorption from seawater onto highly reactive Fe-rich particles from hydrothermal particle plumes at the crest of the East Pacific Rise (2) adsorption from seawater onto the Fe-rich ferromanganese mineral phase vernadite and (3) supply of terrigenous material. Only the second process leads to significant REE enrichment in the manganese nodules. Enrichment is highest in nodules from areas influenced by northward-flowing “Antarctic Bottom Water”.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef5136f4bde284540aef7dfe5bad527d https://doi.org/10.1016/0024-4937(93)90005-w Zobrazit plný text záznamu