Humphris, Susan E; Thompson, Robert N; Marriner, Giselle F (1980): Annotated record of the detailed examination of Mn rich basalt alterations from DSDP Leg 51 (Hole 417A) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.872529, In supplement to: Humphris, SE et al. (1980): The mineralogy and geochemistry of basalt weathering, holes 417A and 418A. In: Donnelly, T.; Francheteau, J.; Bryan, W.; Robinson, P.; Flower, M.; Salisbury, M.; et al., Initial Reports of the Deep Sea Drilling Project, U.S. Government Printing Office, LI, LII, LIII, 1201-1217, https://doi.org/10.2973/dsdp.proc.515253.147.1980
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Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 25.110500 * Longitude: -68.041300
Date/Time Start: 1976-12-02T00:00:00 * Date/Time End: 1976-12-02T00:00:00
Minimum DEPTH, sediment/rock: 208.00 m * Maximum DEPTH, sediment/rock: 242.66 m
Event(s):
51-417A * Latitude: 25.110500 * Longitude: -68.041300 * Date/Time: 1976-12-02T00:00:00 * Elevation: -5468.0 m * Penetration: 417 m * Recovery: 250.4 m * Location: North Atlantic/CONT RISE * Campaign: Leg51 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 389.1 m cored; 27.8 m drilled; 64.4 % 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 | Identification | ID | ||||
| 2 | Sample code/label | Sample label | ||||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | Position | Position | Visual description | |||
| 5 | Deposit type | Deposit type | ||||
| 6 | Quantity of deposit | Quantity | ||||
| 7 | Substrate type | Substrate | ||||
| 8 | Sediment type | Sediment | ||||
| 9 | Comment | Comment | ||||
| 10 | Description | Description |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
24 data points
Data
| 1 ID | 2 Sample label | 3 Depth sed [m] | 4 Position | 5 Deposit type | 6 Quantity | 7 Substrate | 8 Sediment | 9 Comment | 10 Description |
|---|---|---|---|---|---|---|---|---|---|
| 51-417A-23-1,0-20-1 | 208.00 | Buried | Mn crust | Thin | Rock; basalt | Hard ground | Altered plagioclase-phyric basalt, many with fine-grained, aphyric chilled margins | Piece 1A contains a thin Mn crust and traces of palagonite (Visual core description for igneous rocks, page 115) | |
| 51-417A-23-1,118-120-1 | 51-417A-23-1,118-120 | 209.19 | Buried | Mn coating | Rock; basalt | Hard ground | Altered plagioclase-phyric basalt, many with fine-grained, aphyric chilled margins | Mn-rich carbonate replaces some feldspar phenocrysts, the MnO concentration is higher (0.3 wt.%) than in the other basalts from the same hole (Visual core description for igneous rocks, page 115) | |
| 51-417A-26-5,41-45-1 | 51-417A-26-5,41-45 | 242.66 | Buried | Mn coating | Rock; basalt | Hard ground | Phyric pillow basalt. Dark gray, altered to gray-violet, yellow-brown | Veinlets filled by manganese rich calcite and smectite. (Visual core description for igneous rocks, page 122) |