Annotated record of the detailed examination of Mn deposits from the CLIMAX II (SCAN) Expedition stations aboard R/V Argo in the central North Pacific ...

• Main Authors: Hessler, Robert R, Jumars, Peter A
• Format: Dataset
• Language: English
• Published: PANGAEA 1974
• Subjects: Event label; Optional event label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; Sample ID; DEPTH, sediment/rock; Position; Deposit type; Quantity of deposit; Size; Mass; Dry volume; Substrate type; Sediment type; Comment; Description; Box corer; Photo/Video; Gravity corer; SCAN; Argo; NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS; Northwest Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.861312; https://doi.pangaea.de/10.1594/PANGAEA.861312

A 0.25 m US Naval Electronics Lab box corer was used to take replicate samples from an oligotrophic bottom under the North Pacific Central Water Mass (approx. 28 degrees N, 155 degrees W). The bottom is a red clay with manganese nodules at a depth of 5500-5800 m. Macrofaunal density ranges from 84 to 160 individuals per m super(2) and is therefore much the same as in Northwest Atlantic Gyre waters. Of the macrofaunal taxa, polychaetes dominate (55 per cent), followed by tanaids (18 per cent), bivalves (7 per cent), and isopods (6 per cent). Meiofaunal taxa were only partially retained by the 297 micrometer screen used in washing. Even then, they are 1.5-3.9 times as abundant as the microfaunal taxa, with nematodes being numerically dominant by far. Foraminifera seem to comprise an important portion of the community, but could not be assessed accurately because of the inability to discriminate living and dead tests. Remains of what are probably xenophyophoridans are also very important, but offer the same ... : 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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. ...