 HOUSTON, March 22, 2021 GLOBE NEWSWIRE -- ION Geophysical Corporation NYSE: IO today announced that the Super Major currently deploying the Companys GeminiTM extended frequency source on a proprietary survey has elected to extend the successful technology deployment. The Company reported the original Middle East deployment in January. The extension will nearly double the duration and area of the original commercial program, validating the technologys commercial readiness, data quality, and operational and environmental benefits. 