(Table 3, page 78) Element composition versus depth of layers inside manganese nodules of the Madeira Abyssal Plain


Before analysis the samples were digested in HF and evaporated from a HClO4-HNO 3 mixture. The residue was dissolved in 50 ml of 1N HCl.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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.

DOI https://doi.org/10.1594/PANGAEA.888580
Related Identifier https://doi.org/10.1594/PANGAEA.888582
Related Identifier https://doi.org/10.1016/0025-3227(91)90036-4
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.888580
Creator Ebbing, J; van der Borg, Klaas ORCID logo; de Jong, Arie F M; Nederlof, H P
Publisher PANGAEA
Publication Year 1991
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 200 data points
Discipline Earth System Research
Spatial Coverage (-25.293 LON, 31.412 LAT); Atlantic Ocean