PANGAEA_873557 Annotated record of the detailed examination of Mn deposits from DSDP Leg 58 (Holes 442A, 442B, 443, 444, 444A, 445, 446, 446A) deVries Klein, George; Kobayashi, Kazuo; White, Stan Annotated record of the detailed examination of Mn deposits from DSDP Leg 58 (Holes 442A, 442B, 443, 444, 444A, 445, 446, 446A) 1980 PANGAEA Dataset Supplement to: deVries Klein, George; Kobayashi, Kazuo; White, Stan (1980): Initial Reports of the Deep Sea Drilling Project. U.S. Government Printing Office, LVIII, 1013 pp, https://doi.org/10.2973/dsdp.proc.58.1980 https://doi.pangaea.de/10.1594/PANGAEA.873557 Earth Science Event label Identification Sample code/label DEPTH, sediment/rock Position Deposit type Quantity of deposit Size Substrate type Sediment type Comment Description geoscientificInformation 58-442A 58-442B 58-443 58-444 58-445 58-446 58-446A Drilling/drill rig Leg58 Visual description Glomar Challenger 1977-12-12 1978-01-18 Complete 24.7007 29.3275 132.7748 137.6838 13.85 m (DEPTH, sediment/rock) 619.9 m (DEPTH, sediment/rock) DSDP Deep Sea Drilling Project NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database unrestricted CC-BY-3.0: Creative Commons Attribution 3.0 Unported English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 301 data points text/tab-separated-values Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN

The JOIDES Active Margin Panel for Leg 58 decided that the drilling would occur in the north Philippine Sea, namely, the Shikoku Basin, the Daito Ridge and Basin province. The Shikoku Basin sites were selected to solve several problems concerning back-arc basins formed by ocean-floor spreading. The main objectives were: (1) to determine the age of the oldest sediment, so as to calibrate magnetic-anomaly ages and to provide a test for various spreading models suggested for the basin; (2) to investigate the mineralogy, petrology, and chemistry of basalt samples recovered by drilling, and to compare there basalts with those of midocean ridges, so as to understand the nature and source of magmatic materials in these basins; (3) to determine the distribution of sediment types in time, and to relate that distribution to the tectonic history of the basin. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.873557"! ** 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.

https://doi.org/10.2973/dsdp.proc.58.1980 Initial Reports of the Deep Sea Drilling Project https://doi.org/10.7289/V52Z13FT The NOAA and MMS Marine Minerals Geochemical Database https://doi.org/10.7289/V53X84KN The NOAA and MMS Marine Minerals Bibliography https://wiki.pangaea.de/wiki/NOAA-MMS NOAA-MMS https://www.deepseadrilling.org/ DSDP https://www-odp.tamu.edu:443/glomar.html Glomar Challenger DIF 9.4 2026-06-15