A marker carved in one of the west steps of the State Capitol denotes the "one mile above sea level" elevation in Denver on Friday, March 13, 2015. In an article published in March 2015, geologists from the University of Colorado suggest chemical reactions triggered by water far below the Earth’s surface could have made part of the continental plate less dense. Because the plate floats on the Earth’s mantle, the lighter portion might have risen like an empty boat next to one with a heavy cargo _ lifting the vast High Plains far above sea level. (AP Photo/David Zalubowski) (The Associated Press)
DENVER – Geologists may finally be able to explain why Denver, the Mile High City, is a mile high: water.