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Langseth, Marcus G; Okada, Hakuyu (1980): Annotated record of the detailed examination of Mn deposits from DSDP Leg 56 (Holes 434B and 436) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.873561, Supplement to: Wories, Henk; Whelan, Jean K; Thompson, Peter R; Sakai, Toyusaburo; Robinson, Paul T; Pisciotto, Kenneth A; Murdmaa, Ivar O; Müller, German; Kurnosov, Victor B; Harper, Howard E; Bruns, T; Adelseck, C; Langseth, Marcus G; Okada, Hakuyu (1980): Initial Reports of the Deep Sea Drilling Project. U. S. Government Printing Office, LVI, 436 pp, https://doi.org/10.2973/dsdp.proc.5657.1980

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Abstract:
The Japan Trench area was identified a favorable place for studying convergent margins during the initial deliberations of the IPOD Active Margins Panel. The Leg 56-57 DSDP drill sampling along the Japan Trench transect has indicated that material tectonically accreted during the present convergent episode is limited to a surprisingly small zone. The limits seem well established by the seaward extent of crust with continental thickness and lithologies and by the age and thickness of a terrigenous slope apron covering the presumed but probably unsampled accreted oceanic material.
Source:
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
Further details:
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
Coverage:
Median Latitude: 39.840250 * Median Longitude: 144.829550 * South-bound Latitude: 39.747800 * West-bound Longitude: 144.101300 * North-bound Latitude: 39.932700 * East-bound Longitude: 145.557800
Date/Time Start: 1977-09-12T00:00:00 * Date/Time End: 1977-10-01T00:00:00
Minimum DEPTH, sediment/rock: 358.28 m * Maximum DEPTH, sediment/rock: 581.93 m
Event(s):
56-434B * Latitude: 39.747800 * Longitude: 144.101300 * Date/Time: 1977-09-12T00:00:00 * Elevation: -5986.0 m * Penetration: 637.5 m * Recovery: 63.2 m * Location: North Pacific/TRENCH * Campaign: Leg56 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 295.5 m cored; 47.5 m drilled; 21.4 % recovery
56-436 * Latitude: 39.932700 * Longitude: 145.557800 * Date/Time: 1977-10-01T00:00:00 * Elevation: -5240.0 m * Penetration: 397.5 m * Recovery: 240.8 m * Location: North Pacific/RIDGE * Campaign: Leg56 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 42 cores; 397.5 m cored; 0 m drilled; 60.6 % recovery
Comment:
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.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2IdentificationID
3Sample code/labelSample label
4DEPTH, sediment/rockDepth sedmGeocode
5PositionPositionVisual description
6Deposit typeDeposit type
7Quantity of depositQuantity
8Substrate typeSubstrate
9Sediment typeSediment
10CommentComment
11DescriptionDescription
12File nameFile name
13Uniform resource locator/link to imageURL image
Size:
77 data points

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