Marcus Tristan Ogle, Fugro USA Marine, Houston, TX, United States, Robert D Hetland, Texas A&M University, College Station, TX, United States, Steven Francis DiMarco, Geochemical and Environmental Research Group (GERG), College Station, TX, United States, Stephan Dixon Howden, Univ of Southern Miss, Mandevile, LA, United States and Benjamin Williams, Fugro, Houston, TX, United States