ION Geophysical Corporation (ION) is a technology-focused seismic solutions company, which provides acquisition equipment, software and planning and seismic processing services to the global energy industry. ION operates in four business segments: solutions, systems, software and INOVA Geophysical. The Company�s products and services include seismic data processing and reservoir imaging services; seismic data libraries; planning services for survey design and optimization; marine seismic data acquisition equipment; navigation, command and control and data management software products, and Land seismic data acquisition equipment (principally through its 49% ownership in INOVA Geophysical). In December 2011, the Company acquired 235 square miles of three dimensional (3D) multi-client seismic data in the Marcellus shale play in central Pennsylvania, known as ClearfieldSCAN.