USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1991-032-FA

Other ID: none

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s): Gregory Miller

Affiliate Investigator(s): W. Steven Holbrook - WHOI

Information Specialist(s):

Data Type(s): Seismics: Ocean Bottom Seismometer, Location-Elevation: Navigation

Scientific Purpose/Goals: Determine an accurate two-dimensional velocity structure across the vicinity of San Francisco, from an accretionary prism overlying continental crust to normal oceanic crust. Image the lower crust and moho beneath the marginal sedimentary pile that is invisible in available multichannel seismic reflection lines across the margin. Establish the extent of subducted oceanic crust under the margin. Determine an accurate two-dimensional velocity structure along the San Francisco Bay. Search for major faults crossing the bay and continental margin. Augment the BASIX data set of marine multichannel seismic reflection and land seismic refraction to help determine whether major faults in the Bay Area are connected at depth.

Vehicle(s):

Start Date: 1991-09-18

Start Port/Location: Pillar Point Harbor, CA

End Date: 1991-09-20

End Port/Location: Pillar Point Harbor, CA

Equipment Used: Ocean Bottom Seismometer, GPS (wh)

Information to be Derived:

Summary of Activity and Data Gathered:

Staff: Gregory Miller, Dwight Coleman

Affiliate Staff:
W. Steven Holbrook - WHOI

Notes: Also see Field Activity 91030. Original Submitted By field contained: W. Steve Holbrook - WHOI / Uri S. ten Brink.
Project = BASIX, BASIX

Location:

Golden Gate Bridge to Farallon Islands, California, United States, North America, North Pacific;

Boundaries
North: 37.63 South: 37.24 West: -123.4 East: -122.7

Platform(s):

photo of Shana Rae
Shana Rae

Publications

Portals/Viewers

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Ocean Bottom Seismometer --- Ocean Bottom Seismometer
GPS (wh) --- Navigation