1. oil rock
1. Oil shale is a sedimentary rock that contains shale oil, considered a substitute for conventional crude oil.
2. Oil shale is a compact rock containing organic matter that yields petroleum when destructively distilled.
3. Fracturing injects water, sand and chemicals into rock to help release the flow of oil and gas.
4. The chefs use olive oil and rock salt to seal the juices and make them taste succulent.