HOUSTON, Sept. 30 /PRNewswire-FirstCall/ -- ION Geophysical Corporation ("ION") (NYSE:IO) announced today that the Company will be presenting at the Johnson Rice Energy Conference to be held in New Orleans, Louisiana on October 6 - 8, 2009. Bob Peebler, Chief Executive Officer is scheduled to present on Wednesday, October 7, 2009 at 3:15 p.m. Central Time. A live broadcast of the presentation and the accompanying slides will be available in the Investor Relations section of the ION website at http://www.iongeo.com/ and will be archived there for approximately 90 days. Listeners should access the site at least 15 minutes prior to the presentation start time to register and, if necessary, download and install the required software. About ION ION Geophysical Corporation is a leading provider of geophysical technology, services, and solutions for the global oil & gas industry. ION's offerings allow E&P operators to obtain higher resolution images of the subsurface to reduce the risk of exploration and reservoir development, and enable seismic contractors to acquire geophysical data more efficiently. Additional information about ION is available at http://www.iongeo.com/. CONTACTS: R. Brian Hanson Chief Financial Officer 281.879.3672 Jack Lascar, Partner DRG&E 713.529.6600 DATASOURCE: ION Geophysical Corporation CONTACT: R. Brian Hanson, Chief Financial Officer of ION Geophysical Corporation, +1-281-879-3672; or Jack Lascar, Partner of DRG&E, +1-713-529-6600, for ION Geophysical Corporation Web Site: http://www.iongeo.com/

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