Oil shale, also known as shale rock, is a sedimentary rock that contains an organic material called kerogen, which can be converted to crude oil. Contrary to the name, oil shale does not contain any oil, but is made up of solid materials and has a fine-grain. Oil shale is found in huge volumes, but is difficult to develop.
- “U.S. Geological Survey”, “Energy Resource Program, Oil Shale,” accessed January 29, 2014
- “U.S. Energy Information Administration”, “Glossary, S” accessed January 29, 2014
- “U.S. Energy Information Administration”, “Energy in Brief,” accessed January 28, 2014
- Stephen A. Sonnenberg, "Core Analysis and Unconventional Reservoirs," accessed April 22, 2014