The source rocks of oil and gas tend to be Permian mudstones.

Firstly, the question of whether there actually is any source rock in the area must be answered.

This allows a 3-dimensional look of the trap, and source rock.

At the eastern end of the beach, there is a source rock that runs clean fresh water.

A good source rock for hydrocarbons can contain up to twenty percent organic carbon.

However, humic coals have since been proposed for the source rocks.

Rock (1991) considered them possible source rocks, but this view is not generally supported.

Likewise, peridotite is a much more important source rock of common magmas.

The predominant source rock in the Zonguldak basin is coal.

Metals are made by extracting them from source rocks.