A fossilized material in shale and other sedimentary rock that yields oil upon heating.
Solid bituminous material in some shales, which yields petroleum when heated.
A fossilized mixture of insoluble organic material that, when heated, breaks down into petroleum and natural gas. Kerogen consists of carbon, hydrogen, oxygen, nitrogen, and sulfur and forms from compacted organic material, including algae, pollen, spores and spore coats, and insects. It is usually found in sedimentary rocks, such as shale.
Origin of kerogen
- Greek kēros wax –gen
From American Heritage Dictionary of the English Language, 5th Edition