AKA: none
Other ID: C-2-94-WO,L-2-94-WO, L294WO
Status: Completed
Organization(s):
Funding Program(s): Hydrothermal Systems Project (MU145)
Principal Investigator(s): Randy Koski, Stephanie Ross
Affiliate Investigator(s): Bob Embley (NOAA)
Information Specialist(s):
Data Type(s): Imagery: Photo, Imagery: Video, Location-Elevation: Navigation, Sampling: Geology, Sonar: Single Beam
Scientific Purpose/Goals: Investigate tectonic, magmatic, and hydrothermal processes along the Blanco Ridge, a strike-slip segment of the Blanco Fracture Zone
Vehicle(s):
Start Port/Location: Coos Bay, OR
End Port/Location: Coos Bay, OR
Start Date: 1994-08-27
End Date: 1994-09-06
Equipment Used: underwatercamera, underwatertelevision, core, bathymetry, submersible, grab sampler, navigation
Information to be Derived:
Summary of Activity and Data Gathered: 67 hours of video tape, 1000 still photographs, Sea Beam bathymetry, 57 rock samples, 10 sediment cores
Staff: Bob Bohannon, Ledabeth Pickthorn, Jane Reid, Ginny Smith
Affiliate Staff:
Tuomo Tormanen - Visiting Scientist
Notes: (From Sept. 9, 1994 USGS bulletin) Randy Koski reports that during the first three days of their cruise aboard the LANEY CHOUEST (with Bohannon, Gray, Reid, Ross, Smith, and Tormanen) deployments of the U.S. Navys advanced tethered vehicle (ATV) and submersible DSV TURTLE have yielded 45 hours of videotape and about 25 rock samples from the south flank and crest of Blanco Ridge. Accumulations of volcanic rock fragments and evidence for rock avalanches on the Ridge flanks are consistent with the record of seismicity along this transform fault zone. This collaborative program with NOAA and the NAVY will continue through September 7, with final operations in the east Blanco Depression.
Staff information imported from InfoBank
Randy Koski (USGS Western Region) - Chief Scientist
Bob Embley (NOAA) - Chief Scientist
Stephanie Ross (USGS Western Region) - Chief Scientist
Bob Bohannon (USGS Western Region) - Photogeologist
Ledabeth Pickthorn (USGS Western Region) - Navigator
Jane Reid (USGS Western Region) - Navigator/photogeologist
Ginny Smith (USGS Western Region) - Logistical Coordinator
Tuomo Tormanen - Visiting Scientist
Location:
Blanco Ridge
| Boundaries | |||
|---|---|---|---|
| North: 44.21347 | South: 43.24304 | West: -129.683 | East: -127.04063 |
Platform(s):
 Laney Chouest |
Dziak, R.P., Fox, C.G., Embley, R.W., Nabelek, J.L., Braunmiller, J., and Koski, R.A., 2000, Recent tectonics of the Blanco Ridge, eastern blanco transform fault zone: Marine Geophysical Researches, v. 21 no. 5, pp. 423–450, doi: 10.1023/A:1026545910893.
Koski, R.A., Embley, R.W., Ross, S.L., Dziak, R.P., Bohannon, R.G., Smith, V.K., Reid, J.A., Gray, L.B., and Tormanen, T.O., 1994, Tectonism and lithologic variation along the Blanco Ridge, eastern Blanco fracture zone, NE Pacific; preliminary results from the PACNORWEST III Cruise, 1994: American Geophysical Union Eos, Transactions, v. 75 no. 44, pp. 656–656.
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| underwatercamera | --- | Photo | |
| underwatertelevision | --- | Video | biology log |
| core | --- | Biology Geology | sample analysis summary analytical results and map locations chemical analysis |
| bathymetry | --- | Single Beam | maps and tracks |
| submersible | --- | Photo Video Biology Geology | cruise report A87 dive transcript A91-92 dive transcript A88 dive transcript A89 dive transcript A90 dive transcript cruise plan and summary |
| grab sampler | --- | Surveys (geochemical) Geology | hydrothermal breccia samples igneous rock samples sample summary site summary |
| navigation | --- | Navigation |
