Dallmeyer, R. D. (1984): (super 40) Ar/ (super 39) Ar ages from a pre-Mesozoic crystalline basement penetrated at holes 537 and 538A of the Deep Sea Drilling Project Leg 77, southeastern Gulf of Mexico; tectonic implications. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Buffler, Richard T., Schlager, Wolfgang, Bowdler, Jay L., Cotillon, Pierre H., Halley, Robert B., Kinoshita, Hajimu, Magoon, Leslie B., III, McNulty, Charles L., Patton, James W., Premoli Silva, Isabella, Suarez, Otmara Avello, Testarmata, Margaret M., Tyson, Richard V., Watkins, David K., Pisciotto, Kenneth A. (editor), Initial reports of the Deep Sea Drilling Project, covering Leg 77 of the cruises of the drilling vessel Glomar Challenger; Ft. Lauderdale, Florida to San Juan, Puerto Rico, December 1980-February 1981, 77, 497-504, georefid:1985-028264