Show Major Companies Believe Oil Lies Under the Uintah Basin Area By Ray E. D. S. I unlike is where one may find The black gold as crude oil is known in the major oil producing fields of the world is found only beneath such areas that geologists study has revealed as having once been covered by seas in whose waters existed forms of marine life from which crude oil Is believed to have Both Duchesne and Uintah counties have been Inundated by water during past periods of the geologic record and fossil remains of marine shell life have been found by field workers in both scouts of major oil companies believe that under proper drilling the deep lying organic mass which created oil can be reached beneath this part of Marine such as Is known to have inhabited the waters of the vast inland sea which covered this part of Utah during the Cretaceous period of the Mesozoic on dying created oil source beds in the form of The agency solidifying this organic mass of marine life was probably The mass mellowed in the source beds for countless millions of years during which time it was being constantly augmented by remains of marine Finally the mass began to migrate to what are termed as porous that such rocks as sandstones and which owing to their looseness possessed the physical attraction of Certain agencies such as and dehydration of the oil earth movements during adjustments of land masses or hydrostatic pressure of accumulating national gases could have caused the migration of the oil mass from the source beds to the adjacent porus Permeable Reservoir r The receiving or rocks to which the oil mass was attracted had to be permeable as well as porous and had to be encased in what is termed This was necessary in order that the contained hydrocarbons originating from the dying marine life might have freedom of movement within the yet have no escape from once Subsurface rocks of the Roosevelt and Du chesne areas are believed by geologists on the basis of study completed to possess these favorable qualifications for the entrapment j of crude Certain types of rocks such as metamorphic and those deriving from sources cannot possibly be a source of crude oil owing to their Had these types of rocks one time have contained any oil through the conditions which have altered them to their present state would have long since dissipated any material which they might have one time These types of are in the minority here in the Roosevelt area and therefore would not create any obstacle against drilling for the recovery of is believed to exist beneath both Duchesne and Uintah counties from the fact that they were once covered by a sea in which lived certain forms of marine life and because preliminary investigations have shown the subsurface rocks of this section to be the kind favorable for the entrapment of Natural a known quantity of this is another good |