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1. n. [Geology]
An accumulation, pool, or group of pools of hydrocarbons or other mineral resources in the subsurface. A hydrocarbon field consists of a reservoir in a shape that will trap hydrocarbons and that is covered by an impermeable, sealing rock. Typically, the term implies an economic size.
Alternate Form: oil field
2. n. [Geology]
The surface area above a subsurface hydrocarbon accumulation.
Alternate Form: oil field