GROWTH STRATA IDENTIFICATION WITHIN THE FERRON SANDSTONE EMERY, UTAH- IMPLICATIONS FOR RESERVOIR COMPLEXITY

Analysis of six outcrop locations within the Ferron Sandstone indicate growth faults and growth strata evolved due to both sand deposition and the instability/ mobility of the underlying Tanuk Shale. Growth strata have only been identified in the Kf1 and Kf2 units, the lowermost units of Ferron Sandstone near Emery, Utah. Over forty growth features with either single to multiple growth faults have been documented. Growth strata fanning, ejected diapiric shale, basinward dipping growth faults, and soft sediment deformation are present throughout these locations. Previous studies also state similar geometries, growth directions to the northwest and southeast, similar shale deformation and mobility features. These studies do not map distribution throughout these units, their relationship to the underlying Tanuk Shale, and their position within the depositional system. Growth strata are unresolvable at the seismic scale limiting the correct interpretation of the complexity of these systems. Detailed outcrop work will further understanding of their formation and relationship to sedimentation. Growth fault systems can increase viable reservoir, create compartmentalization, and create migration pathways for hydrocarbons.