PANGAEA_874302 Annotated record of the detailed examination of Mn deposits from DSDP Leg 68 (Holes 502, 502A, 502B, 503, 503A, 503B) Prell, Warren L; Gardner, James V Annotated record of the detailed examination of Mn deposits from DSDP Leg 68 (Holes 502, 502A, 502B, 503, 503A, 503B) 1982 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.874302 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 68-502 68-502A 68-502B 68-503 68-503A 68-503B Drilling/drill rig Leg68 Visual description Glomar Challenger 1979-08-16 1979-09-06 Complete 4.0503 11.4918 -95.63869999999997 -79.37819999999999 0.7 m (DEPTH, sediment/rock) 227.8 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 224 data points text/tab-separated-values Zimmerman, Herman; Spariosu, Dann J; Sancetta, Constance A; Riedel, William R; Mayer, Larry A; Mann, Ulrich; Ledbetter, Michael T; Kent, Dennis V; Keigwin, Lloyd D; Fleet, A J; Blechschmidt, G; Adelseck, C; Prell, Warren L; Gardner, James V (1982): Initial Reports of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project, U.S. Government Printing Office, LXVIII, 495 pp, https://doi.org/10.2973/dsdp.proc.68.1982 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 general objectives of this cruise were to use the newly developed HPC to recover two undisturbed, continuous records of the late Neogene and Quaternary, one from the western Caribbean and the other from the eastern equatorial Pacific, and to test the coring capabilities of the HPC. At site 502 in the Caribbean an hemipelagic facies with accumulation rates of about 3 cm/k.y near site 154 were a coarse-grained volcanogenic turbidite sequence had been recovered at a depth equivalent to a strong seismic reflector. Site 503 was located as close as possible to previously rotary-drilled Site 83 in the eastern equatorial Pacific. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.874302"! ** 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.

http://www.deepseadrilling.org/ DSDP https://doi.org/10.2973/dsdp.proc.68.1982 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-odp.tamu.edu:443/glomar.html Glomar Challenger DIF 9.4 2026-04-30