Black Pine is underlain primarily by strata of the Pennsylvanian to Permian Oquirrh Group, which overlies Devonian and Mississippian strata on a low-angle normal fault. The Oquirrh Group is divided into a “middle plate” consisting of carbonate rocks present within a system of interleaved, low-angle thrust and normal faults, overlain by an “upper plate” consisting primarily of sandstone.  Oxidized, finely-disseminated gold mineralization has been discovered throughout the middle plate, which ranges to over 400 m thick, over an area of approximately 14 km2.  The highest gold grades in drilling are associated with calcareous siltstone in proximity to large listric normal faults.