If the heat is insufficient, the material remains as kerogen or bitumen. Pressure: The weight of overlying rock layers squeezes the organic material, driving chemical reactions.
The Critical Role of Source Rock in Crude Oil Formation
Faults, which are fractures in the Earth's crust, can also act as barriers. Source Rock: Fine-grained sedimentary rocks rich in organic matter, such as shale.
Burial, compaction, low temperatures Catagenesis Kerogen breaks down into oil and gas. The Organic Origins: Building Blocks of Crude Oil The story of crude oil begins in ancient seas, lagoons, and lakes where plankton, algae, and other microorganisms flourished.
Understanding Source Rock and Its Role in Crude Oil Formation
When these organisms died, their bodies sank to the seabed or lake bottom, mixing with sediments. Unlike material on the surface that decomposes completely, these remains were buried quickly by layers of mud and silt, protecting them from oxygen and allowing them to accumulate over time.
More About How is crude oil formed
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