Fryer, Patricia B; Hussong, Donald M (1982): Annotated record of the detailed examination of Mn deposits from the Mariana Arc area, Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.876354
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Published: 1982 (exact date unknown) • DOI registered: 2017-07-17
Abstract:
A detailed geophysical and geological survey of the Mariana Trough, an actively extensional back-arc basin, was conducted in 1976 and 1977 to provide data for selection of drilling sites for DSDP Leg 60. These surveys revealed large-scale bathymetric trends, sediment distribution, crustal seismic veolocity structure, and earthquake activity that suggest the basin is opening around an axial spreading center tectonically similar to the slowly spreading Mid-Atlantic Ridge. There are, however, significant differences in the character of the trough, such as poorly defined magnetic anomalies, extreme bathymetric relief, and the frequent occurrence of low-magnitude earthquakes but absence of larger seismic events. Seafloor spreading in the Mariana Trough may be characteristic of the initial opening stages of any oceanic rift system, whether or not it is in a back-arc setting.
Related to:
Fryer, Patricia B; Hussong, Donald M (1982): Seafloor spreading in the Mariana Trough: Results of Leg 60 drill site selection surveys. LX, 45-55, https://doi.org/10.2973/dsdp.proc.60.103.1982
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):
Coverage:
Median Latitude: 25.024029 * Median Longitude: 154.387110 * South-bound Latitude: 1.757000 * West-bound Longitude: 141.866000 * North-bound Latitude: 48.402500 * East-bound Longitude: 177.347000
Date/Time Start: 1977-04-02T00:00:00 * Date/Time End: 1977-07-06T00:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 9.830 m
Event(s):
KK770317-4-RD01 (KK770317-4 M01) * Latitude: 17.882700 * Longitude: 144.686000 * Date/Time: 1977-05-20T00:00:00 * Elevation: -3160.0 m * Location: Pacific Oean * Campaign: KK77 (KK770317) * Basis: Kana Keoki * Method/Device: Dredge, rock (DRG_R)
KK770317-4-RD05 (KK770317-4 M05) * Latitude: 17.880000 * Longitude: 144.668333 * Elevation: -3100.0 m * Location: Pacific Oean * Campaign: KK77 (KK770317) * Basis: Kana Keoki * Method/Device: Dredge, rock (DRG_R)
KK770317-4-RD06 (KK770317-4 M06) * Latitude: 17.895000 * Longitude: 144.695000 * Elevation: -3400.0 m * Location: Pacific Oean * Campaign: KK77 (KK770317) * Basis: Kana Keoki * Method/Device: Dredge, rock (DRG_R)
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 | Fryer, Patricia B | |||
| 2 | Identification | ID | Fryer, Patricia B | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Fryer, Patricia B | Geocode | |
| 4 | Depth, top/min | Depth top | m | Fryer, Patricia B | ||
| 5 | Depth, bottom/max | Depth bot | m | Fryer, Patricia B | ||
| 6 | Position | Position | Fryer, Patricia B | Visual description | ||
| 7 | Deposit type | Deposit type | Fryer, Patricia B | |||
| 8 | Quantity of deposit | Quantity | Fryer, Patricia B | |||
| 9 | Size | Size | Fryer, Patricia B | |||
| 10 | Substrate type | Substrate | Fryer, Patricia B | |||
| 11 | Sediment type | Sediment | Fryer, Patricia B | |||
| 12 | Comment | Comment | Fryer, Patricia B | |||
| 13 | Description | Description | Fryer, Patricia B | |||
| 14 | Uniform resource locator/link to image | URL image | Fryer, Patricia B |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
237 data points