PANGAEA_873193 Annotated record of the detailed examination of Mn deposits from DSDP Leg 55 (Holes 430, 431, 431A, 432) Jackson, Everett D; Koizumi, Itaru; Kirkpatrick, R G; Avdeiko, G P; Clague, David A; Dalrymple, G Brent; Karpoff, Anne Marie; McKenzie, J; Butt, A; Ling, Hsin Yi; Takayama, Toshiaki; Greene, H Gary; Morgan, Joanna; Kono, Masaru Annotated record of the detailed examination of Mn deposits from DSDP Leg 55 (Holes 430, 431, 431A, 432) 1980 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.873193 Earth Science Event label Identification Sample code/label DEPTH, sediment/rock Position Deposit type Quantity of deposit Size Substrate type Sediment type Comment Description File name Uniform resource locator/link to image geoscientificInformation 55-430 55-431 55-431A 55-432 Drilling/drill rig Leg55 Visual description Glomar Challenger 1977-08-01 1977-08-06 Complete 37.9813 42.424 170.379 170.5908 0.1 m (DEPTH, sediment/rock) 10.0 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

Leobener Str.

Bremen Bremen 28359 Germany online 196 data points text/tab-separated-values Jackson, Everett D; Koizumi, Itaru; Kirkpatrick, R G; Avdeiko, G P; Clague, David A; Dalrymple, G Brent; Karpoff, Anne Marie; McKenzie, J; Butt, A; Ling, Hsin Yi; Takayama, Toshiaki; Greene, H Gary; Morgan, Joanna; Kono, Masaru (1980): Initial Reports of the Deep Sea Drilling Project. U. S. Government Printing Office, LV, 868 pp, https://doi.org/10.2973/dsdp.proc.55.1980 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

Leg 55 was conceived as part of the decade-long experiment to test the kinematic hot-spot hypothesis and several of its more imporant corollaries for the origin of the Hawaiian-Emperor chain. Also of particular importance was the question of whether the Hawaiian hot spot has remained fixed in the mantle. The specific primary objectives of Leg 55, were to determine (1) whether the known increase in the age of the volcanoes on the Hawaiian chain with distance from Kilauea continues northward along the Emperor Seamounts; (2) whether the lavas of the Emperor volcanoes are of the same chemical composition and were erupted in the same sequence as those of Hawaiian volcanoes; (3) the latitude of formation of Suiko Seamount as a test of hot-spot fixity; and (4) whether the Emperor Seamounts were once islands and, if so, to determine their post-volcanic and subsidence history. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.873193"! ** 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.55.1980 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