Dating north slope crude oil
Millions of years old bedrock and stratification are exposed all along the Yukon River in Yukon-Charley Rivers National Preserve, both in massive cliff faces and bedrock elevated above the surface of the river. Crude oil production from the United States averaged approximately 5.48 million barrels per day in January 2011, much less than the country consumes.Abrasiveness also seems to be the one quality currently shared by most political appointees and prominent heads of state. Acid: a substance with a p H less than 7 due to prevalent hydrogen ions. The human stomach contains hydrochloric acid with a p H of 1; battery acid is stronger, but not by much. Acid Rain: precipitation heavy with nitric and sulfuric acid.
Abandoned Wells: a hazard because wells left on vacated lands can channel water contaminated by pesticides and fertilizer straight down into the water table. Abrasion: the wearing away of rock surfaces by small particles moved by air or water.
And so it goes with the bending of seemingly rigid rocks, the cutting of majestic canyons, the raising and erasing of entire mountain ranges, the opening and closing of globe-girdling oceans, and the incessant splitting and regrouping of the dancing continents.