Hinz, Karl; Winterer, Edward L (1984): Annotated record of the detailed examination of Mn deposits from DSDP Leg 79 (Holes 544A and 546) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.875091
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Abstract:
Seaward of the Mazagan Escarpment and slope is a band about 50 km wide where structures interpreted as diapirs stand like columns within a pile of sediments about 5 km thick . Dredges and cores from Vema cruise 30-13 and Valdivia cruise West Africa 1979 on the slopes of the most landward of these structural highs, just 10 km from the foot of the escarpment recovered fragments of sheared granite. It was hypothesized that, if this structure were a salt diapir, it might have carried upward very old sediments, dating to the earliest stages of Atlantic evolution, in the Early Jurassic or late Triassic. DSDP Leg 79, sites 544 through 547 were closely located on the structure area.
Related to:
Wiegand, George E; Vuchev, Vassil T; Steiger, Torsten; Schaftenaar, C H; Rullkötter, Jürgen; Moore, Johnnie N; Jansa, Lubomir F; Jaffrezo, Michel; Channell, James E T; Bradshaw, Martin J; Leckie, R Mark; Baumgartner, Peter O; Hinz, Karl; Winterer, Edward L (1984): Initial Reports of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project, U.S. Government Printing Office, LXXIX, 934 pp, https://doi.org/10.2973/dsdp.proc.79.1984
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
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 33.772600 * Median Longitude: -9.484650 * South-bound Latitude: 33.766700 * West-bound Longitude: -9.564300 * North-bound Latitude: 33.778500 * East-bound Longitude: -9.405000
Date/Time Start: 1981-04-17T00:00:00 * Date/Time End: 1981-05-01T00:00:00
Minimum DEPTH, sediment/rock: 92.80 m * Maximum DEPTH, sediment/rock: 147.71 m
Event(s):
79-544A * Latitude: 33.766700 * Longitude: -9.405000 * Date/Time: 1981-04-17T00:00:00 * Elevation: -3581.0 m * Penetration: 235 m * Recovery: 83.3 m * Location: North Atlantic/PLATEAU * Campaign: Leg79 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 235 m cored; 0 m drilled; 35.5 % recovery
79-546 * Latitude: 33.778500 * Longitude: -9.564300 * Date/Time: 1981-05-01T00:00:00 * Elevation: -3958.0 m * Penetration: 192 m * Recovery: 118.4 m * Location: North Atlantic/PLATEAU * Campaign: Leg79 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 192 m cored; 0 m drilled; 61.7 % 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):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Identification | ID | ||||
| 3 | Sample code/label | Sample label | ||||
| 4 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 5 | Position | Position | Visual description | |||
| 6 | Deposit type | Deposit type | ||||
| 7 | Quantity of deposit | Quantity | ||||
| 8 | Substrate type | Substrate | ||||
| 9 | Sediment type | Sediment | ||||
| 10 | Comment | Comment | ||||
| 11 | Description | Description |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
35 data points
Data
| 1 Event | 2 ID | 3 Sample label | 4 Depth sed [m] | 5 Position | 6 Deposit type | 7 Quantity | 8 Substrate | 9 Sediment | 10 Comment | 11 Description |
|---|---|---|---|---|---|---|---|---|---|---|
| 79-544A | 79-544A-11-1,30-1 | 79-544A-11-1,30 | 92.80 | Buried | Mn crust | 1 | Consolidated sediment | Ooze | Grayish orange pink clayey foraminiferal nannofossil ooze (Middle Miocene) | Dusky red (10R2/2) mottling is the result of patchy oxidation of this essentially Fe-?Mn crust. (Site 544A, Core 11, Cored Interval: 92.5-102.0 m, page 61) |
| 79-544A | 79-544A-13-1,22-27-1 | 79-544A-13-1,22-27 | 107.75 | Buried | Mn coating | 1 | Consolidated sediment | Calcarenite | Calcarenite hardground with sharp boundaries cutting through grains (Middle Jurrasic) | Irregular surface in bioclastic wackestone coated by Fe-Mn oxides and thin calcite layers (Site 544A, Core 13, Cored Interval: 107.5-111.5 m, page 61) |
| 79-546 | 79-546-16-3,3-1 | 79-546-16-3,3 | 138.03 | Buried | Mn staining | Several | Foraminifera | Clay | Reddish brown silty nannofossil clay (Middle Miocene) | Stained with Fe-Mn (Site 546, Core 16, Cored Interval: 135.0-144.5 m, page 209) |
| 79-546 | 79-546-17-3,21-1 | 79-546-17-3,21 | 147.71 | In sediment | Mn micronodule | Few | Claystone | Grayish brown to grayish red sandy claystone | 1% Mn micronodules (Site 546, Core 17, Cored Interval: 144.5-154.0 m, page 210) |