Black Pine is underlain primarily by strata of the Pennsylvanian to Permian Oquirrh Group, which overlies Devonian and Mississippian strata on a series of low-angle normal faults. The Oquirrh Group is divided into a 300 meter thick section of “middle plate” consisting of silty/sandy carbonate rocks within a system of interleaved, low-angle thrust and normal faults, overlain by an “upper plate” consisting primarily of limey sandstone. Oxidized, finely-disseminated gold mineralization has been discovered throughout the middle plate 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.