Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the following Registration Statements:
(1) | Registration Statement (Form S-8 No. 33-54394) pertaining to the Input/Output, Inc. Amended 1990 Stock Option Plan and Amended and Restated 1991 Outside Directors’ Stock Option Plan, |
(2) | Registration Statement (Form S-8 No. 33-46386) pertaining to the Input/Output, Inc. 1990 Restricted Stock Plan, 1990 Stock Option Plan and 1991 Directors’ Stock Option Plan, |
(3) | Registration Statement (Form S-8 No. 33-85304) pertaining to the Input/Output, Inc. Amended 1990 Stock Option Plan and the Input/Output, Inc. Amended and Restated 1991 Outside Directors Stock Option Plan, |
(4) | Registration Statement (Form S-8 No. 333-14231) pertaining to the Input/Output, Inc. 1996 Non-Employee Director Stock Option Plan, |
(5) | Registration Statement (Form S-8 No. 333-24125) pertaining to the Input/Output, Inc. Employee Stock Purchase Plan, |
(6) | Registration Statement (Form S-8 No. 333-80297) pertaining to the Input/Output, Inc. 1998 Restricted Stock Plan, |
(7) | Registration Statement (Form S-8 No. 333-80299) pertaining to the Input/Output, Inc. Amended and Restated 1990 Stock Option Plan and the Input/Output, Inc. Amended and Restated 1996 Non-Employee Director Stock Option Plan, |
(8) | Registration Statement (Form S-8 No. 333-36264) pertaining to the Input/Output, Inc. 2000 Restricted Stock Plan, |
(9) | Registration Statement (Form S-8 No. 333-49382) pertaining to the Input/Output, Inc. 2000 Long-Term Incentive Plan, |
(10) | Registration Statement (Form S-8 No. 333-60950) pertaining to the Input/Output, Inc. Non-Employee Directors’ Retainer Plan, |
(11) | Registration Statement (Form S-8 No. 333-112677) pertaining to the Input/Output, Inc. 2003 Employee Stock Option Plan, |
(12) | Registration Statement (Form S-8 No. 333-116355) pertaining to the GX Technology Corporation Employee Stock Option Plan, |
(13) | Registration Statement (Form S-8 No. 333-117716) pertaining to the Input/Output, Inc. Concept Systems Employment Inducement Stock Option Program, |
(14) | Registration Statement (Form S-8 No. 333-123831) pertaining to the Input/Output, Inc. GX Technology Corp. Employment Inducement Stock Option Program and the Input/Output, Inc. April 2005 Inducement Equity Program, |
(15) | Registration Statement (Form S-8 No. 333-125655) pertaining to the Input/Output, Inc. 2004 Long-Term Incentive Plan, |
(16) | Registration Statement (Form S-8 No. 333-135775) pertaining to the Input/Output, Inc. Second Amended and Restated Input/Output, Inc. 2004 Long-Term Incentive Plan, |
(17) | Registration Statement (Form S-3 No. 333-112263) of Input/Output, Inc., |
(18) | Registration Statement (Form S-3 No. 333-115345) of Input/Output, Inc., |
(19) | Registration Statement (Form S-3 No. 333-123632) of Input/Output, Inc., |
(20) | Registration Statement (Form S-8 No. 333-145274) pertaining to the Third Amended and Restated Input/Output, Inc. 2004 Long-Term Incentive Plan, and |
(21) | Registration Statement (Form S-3 No. 333-148235) of ION Geophysical Corporation (formerly known as Input/Output, Inc.). |
of our reports dated February 27, 2008, with respect to the consolidated financial statements and schedule of ION Geophysical Corporation (formerly known as Input/Output, Inc.), and its subsidiaries and the effectiveness of internal control over financial reporting of ION Geophysical Corporation, included in this Annual Report (Form 10-K) for the year ended December 31, 2007.
/s/ Ernst & Young LLP | |||
Houston, Texas February 27, 2008 |