| Identifier | 1979-028-FA | ||||||||
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| Alternate names | GS7903, Leg VII; GS 7903-7 | ||||||||
| Purpose | Leg VII was planned to obtain gravity, magnetic and seismic reflection data over the Destin Anticline in the northern part of the MAFLA or western Florida Shelf region. These data would have increased our ability to assess the hydrocarbon potential of this huge, partially tested structure. Unfortunately, Hurricane David forced delay in departure and Hurricane Frederick stalled over the work area during scheduled cruise time. We availed ourselves of the University of Miami's entree into the interesting marine geologic problems in Florida-Bahamas waters to obtain geophysical data in Florida Straits, Santaren and Nicholas Channels, north of Cuba in the vicinity of Cay Sal, Bahamas. | ||||||||
| Location | Santaren Channel, Nicholas Channel, Cay Sal Bank, Bahamas, Straits of Florida, North America, North Atlantic; | ||||||||
| Summary | Our measurements recorded 2 anticlinal structures with dip reversals spanning several kilometers. These structures are large enough to constitute possible hydrocarbons exploration targets and occur in water depths less than 500 m, which is within currently drillable depths. Gravity data: 550 km; Magnetic data: 400 km; Seismic reflection data: 7 lines, 550 km. | ||||||||
| Info derived | Morphology; | ||||||||
| Comments | Original Center People field contained: Mahlon Ball - Ch. Sci., Richard Sylwester - Ch. Sci., Robert Bowles - nav., Barry Irwin - nav., Janet Burke - sci., Alan Goodman - tech., Kenneth Parolski - tech., David Mason - mech. tech., Chuck Holmes - sci., Ronald Miller - sci., Jack Hampson - sci., Kathy Kent - multichannel, Elizabeth Coward - sci. Project = Petroleum Geology of U.S. Atlantic and Gulf Margins, Petroleum Geology of U.S. Atlantic and Gulf Margins | ||||||||
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| Organization |
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
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| Principal investigators | Mahlon M. BallRichard Sylwester | ||||||||||||||||||||||||||
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| Affiliate principal | Wayne Bock - Rosentiel School of Marine and Atmospheric Sciences, U. Miami | ||||||||||||||||||||||||||
| Affiliate staff | Wayne Bock - co-Ch. Sci., Rosentiel School Marine/Atmospheric Sciences, U. Miami; Tom O'Brien - multichannel, WHOI |
| Data category: | Electro-Magnetic, Seismics, Location-Elevation |
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| Data type: | Gravity, Magnetics, Multichannel, Navigation |
| Name | Description |
|---|---|
| Cruise report | Chief Scientist's cruise report of personnel, equipment, data acquisition notes, and trackchart. |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| Bell Aerospace BGM-3 gravimeter | Gravity | (no data reported) | |
| LaCoste-Romberg gravimeter G-179 | Gravity | (no data reported) | |
| Varian V-75 magnetometer | Magnetics | 2 | |
| Multichannel seismics | Multichannel | 6 | |
| Western Geophysical Integrated Navigation System | Navigation | 4 |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| 1979-028-FA-GP-001 | Varian V-75 magnetometer | Digital tape(s) of NV-NSTAR, NV-NSTAR-FINAL, GR, NV-INS, GR-L&R, NV,GR-INS, | Nancy K. Soderberg |
| 1979-028-FA-GP-001-01 | Varian V-75 magnetometer | Magnetic data | Nancy K. Soderberg |
| 1979-028-FA-SE-001 | Multichannel seismics | Collection of paper record displays of seismic data( AIR) for lines | Nancy K. Soderberg |
| 1979-028-FA-SE-002 | Multichannel seismics | microfilm of | Nancy K. Soderberg |
| 1979-028-FA-SE-003 | Multichannel seismics | analog tape of seismic data | Nancy K. Soderberg |
| 1979-028-FA-SE-004-01 | Multichannel seismics | Paper record section of Lines 1, 2, 3, 4, 5, 6, 7, | Nancy K. Soderberg |
| 1979-028-FA-SE-004-02 | Multichannel seismics | Scanning line list | Nancy K. Soderberg |
| 1979-028-FA-SE-004-03 | Multichannel seismics | SEGY data files | Nancy K. Soderberg |
| 1979-028-FA-LN-001 | Western Geophysical Integrated Navigation System | Navigation trackline plot for field activity 79028 | Nancy K. Soderberg |
| 1979-028-FA-LN-002 | Western Geophysical Integrated Navigation System | Digital tape(s) of NV-NSTAR, NV-NSTAR-FINAL, GR, NV-INS, GR-L&R, NV,GR-INS, | Nancy K. Soderberg |
| 1979-028-FA-LN-002-01 | Western Geophysical Integrated Navigation System | Navigation data - all lines | Nancy K. Soderberg |
| 1979-028-FA-LN-002-02 | Western Geophysical Integrated Navigation System | Zip Archive of raw navigation data | Nancy K. Soderberg |
