Annotated record of the detailed examination of ferromanganese concretions from the Svalbard shelf in the Barents Sea ...

• Main Author: Ingri, J
• Format: Dataset
• Language: English
• Published: PANGAEA 1985
• Subjects: Event label; Latitude of event; Longitude of event; Elevation of event; Identification; DEPTH, sediment/rock; Position; Deposit type; Shape; Quantity of deposit; Size; Substrate type; Sediment type; Comment; Description; Sample code/label; Dredge; Visual description; SVALBARDEKSPEDISJONEN-1980; Norvarg; NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS; Barents Sea; Svalbard; Spitsbergen
• Online Access: https://dx.doi.org/10.1594/pangaea.858684; https://doi.pangaea.de/10.1594/PANGAEA.858684

Ferromanganese concretions from ten stations in the Barents Sea have been analysed for 24 elements. The deposits occur as discoidal and flat concretions and as coatings, in the latter case on lithified or detrital material or as extensive pavements on the Svalbard shelf. The concretions are compositionally similar to Baltic concretions but differ considerably from deep-ocean nodules, particularly in Cu, Ni and Co contents. Statistical analyses reveal distinct correlations between Mn, Na, Ba, Ni and Cu; the Mn-rich coatings showed enrichment of Mo, Zn and possibly Co in a Mn-phase. The iron phase holds high concretions of P and As. Two iron-rich concretions with high contents of P, Ca, Sr, Y, Yb and La were found east and northeast of Spitsbergen Banken, probably indicating upwelling of nutrient-rich, cold polar water along the Svalbard shelf. ... : From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database. ...