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Iron and Manganese Minerals in Suspended Matter from the Barents Sea (2000)

Murdmaa, I. O. ; Bogdanova, O. Yu. ; Gorshkov, A. I. ; [weitere]

Springer

Lithology and mineral resources 35 (2000), S. 594-597

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Details

ISSN: 1608-3229

Quelle: Springer Online Journal Archives 1860-2000

Thema: Geologie und Paläontologie

Notizen: Abstract The mineralogy of suspended matter from surface and bottom waters is studied at two sites in the Barents Sea. Along with terrigenous minerals, the suspended matter samples contain authigenic mineral phases of iron and manganese oxyhydroxides. Mn-feroxyhite, Fe-vernadite, goethite, and proto-ferrihydrite were identified in samples from surface waters, whereas birnessite and nonferruginous vernadite were registered in samples from bottom waters. The formation of suspended manganese minerals in bottom waters is explained by an additional Mn supply from underlying reduced sediments during their early diagenesis and oxygen depletion in the near-bottom nepheloid layer. Bacteria are supposed to take part in the authigenic mineral formation.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1026605716962

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