Other crossword clues for answer "SHALES"SHALESRocks formed from clayLayered mineralsLaminous rocksFuel-yielding rocksOil-bearing rocksFissile rocksLayers of rock.Fine-grained rocks.Layered rocksOil-producing rocksTerrigenous rocksSynthetic fuel sourcesSome are bituminousSources of oilFossil rocksPulitzer-winning journalist TomTV critic TomPulitzer-winning TV critic Tom