Annotated record of the detailed examination of Mn deposits from DSDP Leg 39 (Holes 354, 355, 356, 358, 359) ...

• Main Authors: Perch-Nielsen, Katharina, Supko, Peter R, Boersma, Anne, Bonatti, Enrico, Carlson, Richard L, McCoy, Floyd W, Neprochnov, Yuri P, Zimmerman, H B
• Format: Dataset
• Language: English
• Published: PANGAEA 1977
• Subjects: Event label; Identification; Sample code/label; DEPTH, sediment/rock; Position; Deposit type; Quantity of deposit; Substrate type; Sediment type; Comment; Description; File name; Uniform resource locator/link to image; Drilling/drill rig; Visual description; Leg39; Glomar Challenger; Deep Sea Drilling Project DSDP; NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS; Argentine; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.871020; https://doi.pangaea.de/10.1594/PANGAEA.871020

Unlike most previous Deep Sea Drilling Project cruises, Leg 39 was not scientifically planned as a "theme" cruise, on which a number of sites are drilled to address a single scientific problem area, namely, to improve our knowledge of paleocirculation changes and the overall geologic history of the South Atlantic Ocean. This would be done along more specific objectives: 1) collect a biostratigraphic section on the Ceará Rise (Site 354), determine the nature and age of a prominent reflector there, and determine the nature and age of basement; 2) date basement between magnetic anomalies 32 and 33 in the Argentine Basin (Site 358), and 33 and 34 in the Brazil Basin (Site 355); obtain as complete sedimentary sections as time would permit at the Ceará Rise, Brazil Basin, the Argentine Basin and Sào Paulo Plateau (Site 356). ... : 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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. ...