An area rich in a significant or valuable natural production, esp. (in early use) coal.
| 单词 | θ4949 |
| 释义 | the world > the earth > structure of the earth > structural features > formations by contents > [noun] > containing minerals (6) field1672 An area rich in a significant or valuable natural production, esp. (in early use) coal. oil pool1863 a rock formation in which oil is present throughout without interruption, forming a single reservoir (cf. oilfield, n.). oil sand1875 a porous rock stratum, typically of sandstone or unconsolidated sand, impregnated with oil. trap1920 Geology. An underground rock formation in which an accumulation of oil or gas is trapped; so oil trap. source rock1931 a rock formation in which a particular mineral material originates; spec. a deposit in which petroleum is formed. trend1939 Geology. A geological formation which is a source of oil or gas. Cf. sense 4a. |
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