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How Was Oil Formed?

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Amman Aamir Profile
Amman Aamir answered
Another name for oil is "petroleum", and this gives us a clue as to how, it was formed. The word "petroleum" means "rock oil". Scientists think that petroleum was formed from plants and animals that lived ages ago.
As the plants and animals died, they piled up on the sea bottom. In time, millions of tons of sand and mud covered them. Under pressure, the mud and sand changed to rock.
The plants and animals turned into a dark liquid trapped in the pores of the rocks. When parts of the earth's crust moved upward, sections of the old sea floor became dry land. Some of the liquid oozed to the surface of the earth and so men came to notice it.
Petroleum, or crude oil, has been used for thousands of years. The ancient Egyptians and Chinese used it as a medicine. In India, it was burned long before the Christian Era.
But until the middle of the nineteenth century, the only way man got this oil was by collecting it when it seeped naturally from the earth. Sometimes it was skimmed from the surface of streams or soaked up in rags.
Crude petroleum, as it comes from the well, is of little use. It must be refined. A distillation process separates the different things nature put into crude oil. In this process we obtain petrol, kerosene, lubricating oils, fuel oil, and asphalt.
Anonymous Profile
Anonymous answered
Oil was formed from the remains of animals and plants that lived millions of years ago in a marine (water) environment before the dinosaurs.   Over the years, the remains were covered by layers of mud.  Heat and pressure from these layers helped the remains turn into what we today call crude oil .  The word "petroleum" means "rock oil" or "oil from the earth."
Anonymous Profile
Anonymous answered
By biological oil was formed with cheese
Anonymous Profile
Anonymous answered
The earth has replenished itself over and over again killing off almost every living thing every time. All of the volcanic eruptions and Ice ages bury organic matter (dead plants & animals) Which are made of up of energy as is everything else.  Energy cannot be created or destroyed only converted from one form to another hence the creation of oil.
Anonymous Profile
Anonymous answered
From petroleum
Anonymous Profile
Anonymous answered
Oil was formed from the remains of animals and plants that lived millions of years ago
in a marine environment.
Anonymous Profile
Anonymous answered
It is formed by plants and animals that have broken down to be under pressure over the years
Anonymous Profile
Anonymous answered
How oil if formed
Plants, animals and marine organisms all get their energy from the sun one way or another. Plants use photosynthesis to turn sunlight into plant food and animals eat plants and other animals. When marine organisms die they fall to the seabed, silt and sand gradually cover them. The layers of silt and sand become deeper and deeper. The whole time, dead plants and animals are stuck in small pockets between the layers of silt and sand. Eventually the layers on top of them are so deep that the sand and silt turn to rock. The enormous pressure from the rock compresses the dead matter so that it becomes petroleum and when the petroleum is eventually subjected to very high heat it turns into oil and gas. Crude petroleum is of little use. It must be refined. A distillation process separates the different things in the crude oil; in this process we obtain petrol, kerosene, lubricating oils, fuel oil, and asphalt.
Stuti Ahuja Profile
Stuti Ahuja answered
Oil and natural gas are carbon by-products and a common name for all the carbon by-products is petroleum. Oil is formed deep under the crust of earth. Petroleum is formed from organic materials. This organic material comes from the land itself or from the dead plankton or the dead marine organisms. The organic material become a part of the many layers of rocks, these are called the sedimentary rocks. More layers form on top of these layers and the organic material changes into petroleum and is contained in a source rock. Other layers put pressure and generate heat on the source rock. This causes the petroleum to change into oil.
thanked the writer.
Cameron Bob
Cameron Bob commented
Oil and natural gas are carbon by-products and a common name for all the carbon by-products is petroleum. Oil is formed deep under the crust of earth. Petroleum is formed from organic materials. This organic material comes from the land itself or from the dead plankton or the dead marine organisms. The organic material become a part of the many layers of rocks, these are called the sedimentary rocks. More layers form on top of these layers and the organic material changes into petroleum and is
Anonymous Profile
Anonymous answered
The answer supplied by science is inadequate. How long does it take silt to cover a corpse? Were there no predators in the esa then? To day, fish eat anything dead in the sea. Did they have a different diet back then?  After a few hundred years how much of this  corpse is left to turn to oil? There has to be another answer that provides for the rapid covering of many dead animals who all died almost at once.

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