Chief Scientist: Dave McCulloch. Geophysical data (uniboom, sparker, depthsounder, magnetics, Kleinsidescan, vibratingcore, miniranger) of field activity W-1-77-NC in offshore Daly City and Golden Gate from 05/13/1977 to 05/28/1977
Location
offshore Daly City and Golden Gate
Summary
WWC collected a grid of vibracores as well as the deep borings. Both were probably collected with barge mounted truck/vibracore and truck?/ spider rig. Vibra cores were "continuous" and deep borings were not continuous but were "Campbell?" spot cores. All core samples were given to USGS when SF warehouse shut down. Clifton and Chin went to SF to pick up cores. Vibracores were put in reefer. Working half (now totally used up) went to Chuch Powell for megafossils, Mary McGann for microfauna (benthic forams), and Gretchen Luepke for mineral separates. Archive half was in Deer Creek reefer until the move - now? The spot cores from the deep bores were highly dessicated when taken from SF warehouse. They were examined briefly and were left outside at MARFAC (and John does not know if they still exist now, and may not have been very useful--better to look at the stratigraphic logs in the WWC reports). John thinks the macrofauna are recycled transgressive lag sequences. To determine if fauna are in place, all vibracores would have to be xrayed and studied to look for fauna in growth postions--this would be a massive undertaking, albeit an interesting study, to also compare with lag sequences onshore. John is not sure that ages are possible, with recycled macrofossil lags and likely missing (or not preserved) microfauna in the sandy sequences. John says WWC reports have logs and stratigraphic sections. (Alan Coopers notes of conversation with John Chin on 7/20 and 7/28/97). 12 crew 10 borings totaling 616 ft. 16 vibra coring totaling 183 ft. 16 cone penetrometer tests 4 to 20 ft. into seafloor Barge towed the Spider II to the first borehole site on 4/5/77. Spider II completed boring on 4/22/77. Caldrill I began boring 5/13/77 and ended 5/28/77. Derrick barge dredged test pits nos. 1 and 2 from 8/17/78 to 10/9/78. Polaris I monitored bathymetry and side scan sonar from 8/21/78 to 11/16/78.
Comments
Woodward Clyde Consultants collected seismic data and samples. Dave McCulloch looked at the seismic. Ed Clifton and John Chin and Gretchen Luepke worked on the sediments. Ed Clifton asked a Spanish student? to look at the seismic data, but he was unable to do anything with the stratigraphy. John has only looked at 4-5 of the seismic lines, does not know what McCulloch did (or published) with his analyses. John gave Gretchen all of his materials directly before the move. On one occasion, he gave her 6-7 binders of the WWC report. Then he gave her a box with his notes, xrays, and overlays, etc., from the Chin/Clifton work. He also told Gretchen to deal with the cores and materials. (NB: Becky got 3 preliminary reports from Gretchen on/about 7/20. Becky later got a large stack of reports).
Staff information imported from InfoBank
Dave McCulloch (USGS Western Region) - Chief Scientist
Ed Clifton (USGS Western Region) - Scientist
John Chin (USGS Western Region) - Scientist
Gretchen Luepke (USGS Western Region) - Scientist
