By Tess Stynes 
 

Marathon Oil Corp. (MRO) signed an agreement with Africa Oil Corp. (AOIFF, AOI.V) to jointly develop two onshore exploration areas in northwest Kenya, a deal that gives the U.S. exploration and production company entry into a position that fits in with its focus on liquids-rich plays.

Marathon and Africa Oil--a Canadian company with assets in Kenya, Ethiopia, Mali and Somalia--also agreed to jointly explore an additional area in Ethiopia.

Marathon agreed to an entry payment of $35 million, which includes prior expenditures, and also agreed to fund Africa Oil's share of joint venture expenditures--estimated at up to $43.5 million--over the next three years.

The deal includes a 50% working interest in the Block 9 area, in which Africa Oil will be the operator in the exploration phase. The agreement also includes a 15% interest in Block 12A, where Tullow Oil PLC (TWL.LN, TUWOY)--which has a 65% interest--is the operator. Africa Oil has a 20% interest.

Marathon Oil in May reported that first-quarter earnings fell 58% from a year-earlier period that included contributions from its former refining and marketing business, missing analysts' expectations. The company expects to report its second-quarter financial results Aug. 1.

Shares closed Friday at $26.54 and were inactive premarket. The stock is down 9.3% this year.

Write to Tess Stynes at Tess.Stynes@dowjones.com

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