Busting the myths about cheap and unlimited oil being broadcast by Rush Limbaugh, Jerome Corsi and other dinosaurs.
By Peter Dizikes
Read more: Environment, Alaska, Science, Oil, Environment & Science
Aug. 18, 2008 | Petroleum may be in short supply these days, but the United States does have a related surplus: myths of oil abundance.
You don't have to drill deep into our political discourse to find suspect stories about oil, with politicians peddling the flagrantly false notion that China is producing oil off the coast of Florida, while right-wing activist Jerome Corsi claims oil is not a fossil fuel but "a natural product the Earth generates constantly."
Such declarations serve a political purpose: to make oil drilling seem like an easy solution to our current energy crisis, to marginalize warnings that we are running short on oil, and to stymie efforts at conservation or developing alternatives to fossil fuels.
Along with these high-profile claims, an array of books, Internet forums and YouTube videos constitute a subterranean layer of storytelling, creating a narrative of perpetually cheap domestic oil being denied to us by a dictatorial government. These stories may be working: Offshore oil drilling is now favored by 63 percent of the electorate. But there's another side to them: They reveal our inability to accept that the United States is not always a land of plenty.
"In America, we're a frontier nation, and so the idea is that just beyond the next ridge is the perfect farmland, a giant oil field or an abundant supply of timber," says Robert Kaufmann, director of the Center for Energy and Environmental Studies at Boston University. "People don't like the idea that the frontier is now closed and we've got to live within limits."
These narratives also require spectacularly limited scientific literacy about oil: what it is, how we find it, how much remains. Let's take a brief tour of some claims worthy of tabloid headlines.
"Oil is not a fossil fuel!"
What is oil? A wealth of evidence shows it is a fossil fuel derived from ancient marine microorganisms. Essentially, oil comes from plankton fossils that have been covered by sediment at the bottom of bodies of water. Occasionally in such settings -- when there is no oxygen around and the temperature stays between about 120 and 210 degrees for up to a couple of million years -- these fossils become heated into oil.
The upshot: Oil is a finite resource that takes a long time to create, but we use it quickly. So wouldn't it be great if oil were an inexhaustible, inorganic substance? A few researchers, notably Soviet scientists in the 1950s, have tried unsuccessfully to make this case. Corsi, known for his attacks on John Kerry, and now making the media rounds with a loopy book on Barack Obama, also promotes this view. In 2005, Corsi coauthored a book, "Black Gold Stranglehold," asserting that oil is inorganic and abundant, and he continues pumping out related columns at the conservative current-events site WorldNetDaily.
Corsi prefers to cite a lone American academic supporter of the idea: Thomas Gold, the late Cornell astrophysicist and habitual scientific maverick who proposed that inorganic methane shoots up from the earth's mantle into the crust and turns into oil. (Most methane is, like oil, an organic fossil fuel made of hydrogen and carbon.)
Gold never fully detailed how this supposedly happens. And there are other problems with the idea. To name only two: Inorganic methane has been found only in tiny quantities, and it has a specific chemical signature never found around oil deposits. "No one would doubt that inorganic hydrocarbons do occur," says Michael Lewan, a petroleum geochemist with the U.S. Geological Survey. "But the oil we are currently producing is of organic origin."
The evidence for oil's organic origins is robust and diverse. Briefly, it includes biomarkers, or chemical compounds found in both ancient organisms and petroleum formed at the same time; geochemical evidence allowing scientists to match types of oil with their source rocks; lab experiments mimicking oil formation; and literally a world of geological data helping us find oil today.
With that in mind, consider Corsi's level of argumentation in this November 2005 WorldNetDaily article, as he discusses Thunder Horse, a drilling area that BP operates in the Gulf of Mexico:
Moreover, Thunder Horse also defies "fossil-fuel" oil theorists who like to argue that oil comes from dead dinosaurs and decaying ancient forests. With the water depth of nearly 2 miles, Thunder Horse is truly an ultra-deep project. From the floor of the Gulf, BP has drilled down another 6 miles to hit oil. What evidence is there that any ancient dinosaur ever walked on land that is now 8 miles down? Moreover, geologists identify the deposits in which BP has found oil in the Thunder Horse Field as Miocene, a period that occurred in the Cenozoic Era, some 24,000 years ago. Dinosaurs by then were long gone, having disappeared at the end of the Mesozoic Era, some 65 million years ago.
Corsi makes multiple scientific mistakes here. Scientists never argue that oil comes from "dead dinosaurs and decaying ancient forests." Again, oil derives from fossilized marine microorganisms. The Miocene was not a point in time "24,000 years ago." It lasted from about 5 million years ago to 23 million years ago. In geological language, it's an epoch, not a period, and according to BP, the rocks at Thunder Horse appear to be 5 to 11 million years old. Moreover, oil tends to seep upward over time, so we typically extract it from rocks that are younger than those in which it was formed anyway. Finally, while dinosaur references are irrelevant to oil, basic geological concepts -- erosion, plate tectonics -- explain how any creature might walk on land that later becomes deeply submerged. The National Research Council suggests students should know these concepts by the eighth grade.
Lewan summarizes matters: "I feel that the evidence right now for the organic theory, for our major economic occurrences [of oil], is overwhelming. And the evidence for inorganic sources right now to explain our current discoveries is unsubstantiated."
Next page: "North Dakota is the new boomtown!"