Sandy Barnes
These borings in an outcrop of the Dakota Hogback in Morrison are filled with tar sands containing oil.
There's oil in the Jeffco hills

Oil seeping from an outcrop of the Dakota Hogback formation and at another site north of U.S. 285 in Morrison suggests the oil and gas industry could one day get a toehold in Jefferson County

“The Turkey Creek outcrop is oil-saturated,” said Dr. Steve Sonnenberg, professor of petroleum geology at the Colorado School of Mines.