Item 8.01 Other Events.

Attached as Exhibit 100 to this Current Report on Form 8-K are the following materials from the Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2008, of Marathon Oil Corporation., filed on November 7 , 2008, formatted in XBRL (eXtensible Business Reporting Language):
(i) the Consolidated Statements of Operations,

(ii) the Consolidated Balance Sheets,

(iii) the Consolidated Statements of Cash Flows,

(iv) the notes to these financial statements tagged as blocks of text.

These XBRL-formatted documents are not readable in HyperText Markup Language (HTML). Users of this data are advised pursuant to Rule 401 of Regulation S-T that the financial information contained in the XBRL documents is unaudited and these are not the official publicly filed financial statements of Marathon Oil Corporation. The purpose of submitting these XBRL formatted documents is to test the related format and technology and, as a result, investors should continue to rely on the official filed version of the furnished documents and not rely on this information in making investment decisions.

In accordance with Rule 402 of Regulation S-T, the information in this Current Report on Form 8-K, including Exhibit 100, shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

100 The following materials from Marathon Oil Corporation's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2008, filed on November 7, 2008, formatted in XBRL (eXtensible Business Reporting Language):
(i) the Consolidated Statements of Operations,
(ii) the Consolidated Balance Sheets,
(iii) the Consolidated Statements of Cash Flows,
(iv) the notes to these financial statements tagged as blocks of text.