This report presents barrel descriptions of deep-sea sediment cores obtained by the Hawaii Institute of Geophysics on cruises of the R/V Mahi during 1970 in the western Pacific Ocean. Many of the cores provided useful preliminary observations for later detailed surveys of drilling sites for the Deep-Sea Drilling Project in the southwest Pacific.
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.