Ore controlDeposition Controlled By Ground Water Flow Conditions And Carbonaceous Material With Associated Pyrite. Flow Was Impeded By The Fault On The Southern End Of The Echo Park Graben.
Geology
Host rockSandstone,Arkose · Echo Park Alluvium
Associated rockRhyolite · Wall Mountain Tuff Was Probable Principal Source Of Uranium
StructureThirtynine Mile Volcanic Field, Echo Park Graben, Paleovalleys, Faults