Also notable, is the Green River Formation of Utah, Wyoming and Colorado, which contains an estimated 1.5 trillion barrels of oil trapped in shale rock.
And they all get brought up every time the price of gas goes up. My late wife, right at the time we were married, made a little killing on a tiny company called "Utah Shale". Its stock went from 3 to 30 in a few weeks after the middle eastern oil facilities were nationalized. We used the profits to buy our first house.
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