United States Geological Survey,Scripps Institution of Oceanography. Chief Scientists: Harry Ladd, W.A. Newman. Geological and Geophysical data (bathymetry, echosounder, dredge) of field activity A-7-68-NP in Wake Island area, North Pacific from 09/06/1968 to 09/14/1968
Location
North Pacific
Summary
The area in which rocks of Cretaceous age are known to occur was extended toward Wake Island during this cruise. Seismic and echo-sounder surveying proved that one of the guyots was actually an ancient atoll with its elevated rim now submerged more than 600 fathoms. Dredging on the atoll showed that its rim was built primarily by rudistids of Cretaceous age. Cretaceous corals were also obtained from the drowned atoll: some chert was present, and most of the dredged material was heavily encrusted with manganese oxide.
Info derived
Bathymetry, geologic age.
Comments
Staff information imported from InfoBank
Harry Ladd (USGS) - Chief Scientist
W.A. Newman (SIO) - Chief Scientist
