However, it does not travel freely. The large kerogen molecules are broken down into smaller, lighter hydrocarbon chains.
The Fascinating Process of How Oil Forms from Ancient Organic Matter
In environments with low oxygen levels, this organic matter was prevented from fully decomposing. This constant burial subjected the material to significant pressure, compressing the sediments into rock.
It breaks down further into natural gas or, eventually, into elemental carbon and graphite. The formation of oil reveals a delicate balance of biology and geology that took hundreds of millions of years to achieve.
The Finite Nature of Oil: How Fossil Fuels Form Deep Underground
If the temperature exceeds 120°C for an extended period, the oil continues to degrade. Driven by pressure, it begins to migrate upward through porous rock formations.
More About How is oil is formed
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More perspective on How is oil is formed can make the topic easier to follow by connecting earlier points with a few simple takeaways.
