Subsurface stratigraphic picks of the Middle–Upper Triassic Shublik Formation, Alaska North Slope
The Middle–Upper Triassic Shublik Formation is the main source rock for Arctic Alaska oil and gas accumulations, including the supergiant Prudhoe Bay field.  A revised stratigraphic framework recently has been developed in outcrop for the Shublik and related strata that delineates three large-scale stratigraphic …