This adjective classifies geological formations, strata or entire basins that generate or hold extractable hydrocarbons. Geologists apply it to source rocks like organic-rich shales as well as reservoir rocks that trap migrated oil and gas. Identifying these zones is the primary goal of exploration drilling and seismic surveying.
The seismic data indicates a thick petroliferous shale sequence extending across the entire fault block.
While it technically means oil-bearing, professionals often use it broadly to include formations containing natural gas and other liquid hydrocarbons.
Related terms
Petrochemical
A chemical compound extracted or synthesized from crude oil or natural gas.
Country rock
The pre-existing, non-mineralized rock that surrounds and encloses an orebody or igneous intrusion.
Bedrock
The solid, intact rock layer that lies beneath soil, gravel, and other loose surface materials.