Rock+oil
121Oil Trough, Arkansas —   Town   …
122oil-bearing — oil .bearing adj oil bearing rock contains oil …
123oil well — ► NOUN ▪ an artificially made well or shaft in rock from which mineral oil is drawn …
124oil shale — Geol. a black or dark brown shale or siltstone rich in bitumens, from which shale oil is obtained by destructive distillation. [1870 75] * * * Any fine grained sedimentary rock that contains solid organic matter (kerogen) and yields significant… …
125Oil well — The pumpjack, such as this one located south of Midland, Texas, is a common sight in West Texas. An oil well is a general term for any boring through the earth s surface that is designed to find and acquire petroleum oil hydrocarbons. Usually… …
126Oil shale — For the scientific technical journal, see Oil Shale (journal). Not to be confused with Shale oil or Tight oil. Oil shale Sedimentary Rock Combustion of oil shale Composition …
127Oil shale geology — Main article: Oil shale Outcrop of Ordovician kukersite oil shale, northern Estonia. Oil shale geology is a branch of geologic sciences which studies the formation and composition of …
128rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …
