Cann, J. R.; Langseth, Marcus G.; Honnorez, Jose; Von Herzen, Richard P.; White, S. M.; Bacon, Michael P.; Anderson, Roger N.; Lawrence, James R.; Natland, James H.; Nekhoroshkov, Vladislav L.; Pertsev, Nikolai N.; Ponomarev, Vladimir N.; Zoback, Mark D.; Adamson, A. C.; Barrett, Timothy J.; Becker, Keir; Beiersdorf, Helmut; Bender, Michael; Borella, Peter E.; Furuta, Toshio; Hubberten, Hans-Wolfgang; Jones, Steven C.; Karato, Shun-ichiro; Laverne, Christine; Levi, Shaul; Migdisov, Areg G.; Moorby, S. Anthony; Mottl, Michael J.; Noack, Yves; Sancetta, Constance A.; Schrader, Edward L.; Wilkens, Roy H.; Stout, Larry N. (ed.); Bailey, Marian G. (ed.) (1983): Initial reports of the Deep Sea Drilling Project covering Leg 68 (Site 501), Leg 69, and Leg 70 (Site 504) of the cruises of the drilling vessel Glomar Challenger, Puntarenas, Costa Rica to Balboa, Panama, July-December 1979. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 69, 864 pp., georefid:1983-052485