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5 years ago in Biology , Life Sciences By David
How is petroleum formation related to organic biology?
In my research at the intersection of paleobiology and geochemistry, a recurring theme is the transformation of organic material over deep time. I’m trying to bridge my understanding of biological systems with their ultimate fate in the geological record. Specifically, I'm curious about the precise mechanisms that convert once-living matter into hydrocarbons like petroleum.
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By Zubaid Answered 4 years ago
From my experience in geochemistry, the link is all about time, pressure, and the absence of oxygen. I’ve seen in core samples how vast accumulations of ancient marine plankton and algae settle in anoxic seabeds. Over millions of years, this organic soup is buried under sediment. The heat and pressure from this burial slowly cook the material through a process called catagenesis, chemically breaking it down. This transforms the waxy kerogen first into bitumen and, with more heat, into the liquid and gaseous hydrocarbons we extract as petroleum. It’s essentially a slow, geologic recycling of ancient solar energy stored in biology.
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