1 Although nobody told Mr. Callahan until it was too late, the dark-hued shale rocks found in pockets along the Western Slope were oil shale. Often referred to as the rock that burns, oil shale boasts ...

Fracking-the high-pressure injection of water, chemicals and sand into shale deposits to release the gas and oil trapped within the rock-in recent years has been combined with horizontal drilling ...

Shale oil mainly refers to liquid hydrocarbons trapped in formations of shale rock that can be extracted for refining. It is often found in organic-rich shale and thin interlayers of carbonate ...