Image Credit

Description:

Geology Science fair project This drawing shows a cross-section of the Earth with an oil well at the surface above an earthquake fault and layers of sedimentary rock. Starting at the surface and moving down, you see first very porous rock made from shells, then cap rock, then trapped natural gas and oil (that the oil well is tapping into), and below that, porous reservoir rock, and finally source rock from decaying plankton.

Source:

Kristin Strong, Science Buddies

License:

Science Buddies