This slow transformation process, known as diagenesis and then catagenesis, breaks down the kerogen's complex organic molecules, gradually converting them into liquid and gaseous hydrocarbons. Crude oil, the black gold driving modern civilization, originates from the ancient remains of microscopic marine organisms.
How Is Oil Created Migration Trapping
Heavy crude is denser and more viscous. These differences are a direct result of the unique geological history each oil field experienced during its creation.
5 to 2 miles (2. The sulfur content also varies, with "sweet" oil containing low sulfur and "sour" oil requiring more refining.
How Is Oil Created Migration Trapping
These organisms lived brief lives, multiplying rapidly in nutrient-rich waters before dying and sinking to the sea floor. Along with marine sediments and occasional plankton blooms, they accumulated in thick layers of organic sludge, creating a concentrated soup of carbon-rich material that would eventually become the foundation of fossil fuels.
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