Bader, Richard G.; Gerard, Robert D.; Benson, William E.; Bolli, Hans M.; Hay, William W.; Rothwell, W. Thomas, Jr.; Ruef, Michael H.; Riedel, William R.; Sayles, Fred L. (1970): Site 23. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Bader, Richard G., Gerard, Robert D., Benson, William E., Bolli, Hans M., Hay, William W., Rothwell, W. Thomas, Jr., Ruef, Michael H., Riedel, William R., Sayles, Fred L., Initial Reports of the Deep Sea Drilling Project, covering Leg 4 of the cruises of the drilling vessel "Glomar Challenger", Rio de Janeiro, Brazil to San Cristobal, Panama, February-March, 1969, 4, 17-35, georefid:1983-032846