12:00 PM EST - Western Oil Sands : Marathon Oil Corp. said on Tuesday it agreed to buy Canada's Western Oil Sands Inc. for about $5.56 billion, giving the U.S. oil company a foothold in one of the world's most promising streams of new crude oil. Marathon said it will pay about $3.6 billion in cash plus 34.3 million shares or securities exchangeable for shares. It will also assume about $650 million of debt. Western Oil Sands
shares T.WTO are trading up $3.04 at $37.17.
