Registration Opens Mid August GeoGulf online registration will open on this website August 12 Links to registration will be available at 2019.gcagshouston.com and through our partner societies GCSSEPM, HGS, and AAPG. We know its hard to wait!! Take advantage of “Early Bird” prices till September 26. Stay at the Westchase Marriott Convention hotel! Click here for discount hotel room registration Geologists and Geophysicists