1. adj. [Geology]

The quality of a source rock that makes it more likely to generate gas than oil. The nature of the organic matter or kerogen in source rocks varies from coaly, plant-like material commonly found in terrestrial source rocks to algal or other marine material that makes up marine source rocks. Terrestrial source rocks are commonly gas-prone.

See: generation,  hydrocarbon,  kerogen,  oil-prone,  source rock