| Identifier | 1984-015-FA | ||||||||
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| Alternate names | L9-84-CP, L984CP | ||||||||
| Purpose | Study the distribution and composition of ferromanganese-oxide crusts in the Marshall Islands area and retrieve a current meter/sediment trap mooring deployed on Horizon Guyot, Mid-Pacific Mountains, in October 1983 on the USGS L5-83-HW cruise (FA 83012). | ||||||||
| Location | Marshall Islands to Hawaii, Horizon Guyot, Mid-Pacific Mountains, United States, North Pacific; | ||||||||
| Summary | Physical data holdings at PCMSC Seismic data (12 kHz and 3.5 kHz): 5410 km; Airgun (80 cu in and 148 cu in): 730 km; Dredge hauls: 13; Box cores: 2; Gravity cores: 8; Recovered current meter from Horizon Guyot. | ||||||||
| Info derived | Sea floor map; Samples and chemical analysis; | ||||||||
| Comments | Original Center People field contained: Bill Schwab - Ch. Sci., Tim Ling - geologist. Project = Marine Metallogenesis, Marine Metallogenesis | ||||||||
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| Organization |
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
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| Principal investigators | William C Schwab | ||
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| Affiliate staff | USGS-Menlo Park: Kevin O'Toole - mechanical technician, Paul Wenberg - mechanical technician, James Vaughan - electronic technician, Rick Viall - electronic technician, Joe Stagg - Geologist, Alice Davis - geologist, Leda Beth Pickthorn - geologist, Joanne Thede - geologist, Chris Wilson - Chief Navigator/Data Curator, Robin Bouse - Navigator, Wendy Bohrson - Navigator, Kaye Kinoshita - watchstander; Bob Weldin - Geologist, Bureau of Mines; Robert Rowland - geologist, USGS-Reston; Henry Meyer - geologist, Purdue University; Janet Haggerty - geologist, University of Tulsa) |
| Data category: | Electro-Magnetic, Imagery, Location-Elevation, Sampling, Seismics |
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| Data type: | Gravity, Magnetics, Photo, Navigation, Geology, Air Gun / Water Gun |
| Name | Description |
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| Cruise report | Chief Scientist's report including cruise narrative, personnel list, station operations, chemical analyses of crusts, and trackmap. |
| Equipment | Usage description | Data types | Datasets |
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| Single channel hydrophone | Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Sub Bottom Profiler | 1 | |
| Magnetometer (wh) | Magnetics | 1 | |
| Gravity meter (wh) | Gravity | 1 | |
| Integrated Navigation System | Navigation | (no data reported) | |
| Box corer | Biology, Geology | (no data reported) | |
| Gravity corer | Geology | (no data reported) | |
| Camera- deep sea | Photo | (no data reported) | |
| Dead reckoning | Navigation | (no data reported) | |
| Dredge | Biology, Geology | 1 | |
| Air gun | Air Gun / Water Gun | (no data reported) |
| Dataset name | Equipment | Description | Dataset contact |
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| 1984-015-FA-SE-001 | Single channel hydrophone | microfilm of | Nancy K. Soderberg |
| NGDC MGD77 data | Magnetometer (wh) | Linda P McCarthy | |
| NGDC MGD77 data | Gravity meter (wh) | Linda P McCarthy | |
| Sorbed-water (H2O-) corrected chemistry for ferromanganese crust samples from the western equatorial Pacific Ocean | Dredge | Ferromanganese crust samples were collected via dredge during four oceanographic research cruises to the western equatorial Pacific Ocean. The location (latitude, longitude, depth) and concentrations of 27 major and trace elements in the most recent growth layers of ferromanganese crusts from 57 dredge sites are presented here, as well as select seawater chemistry at each location. These data were used in statistical analyses to determine how oceanographic conditions affect the chemical composition of ferromanganese crusts throughout the region. The changes in ferromanganese crust composition show that modern measurements of these primary oceanographic parameters, as well as paleoceanographic reconstructions, can be used to define regions of interest for FeMn crust exploration. | Kira Mizell |
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