Diagenesis and stratigraphy of the Lisburne Group limestones of the Sadlerochit Mountains and adjacent areas, northeastern Alaska

Abstract

Four complete sections of the Mississippian and Pennsylvanian limestones of the Lisburne Group in or adjacent to the Sadlerochit Mountains were sampled at 5-to 10-foot intervals for petrographic study. The Sadlerochit Mountains are shown to have been a landmass during Meramecian time and to have been subsequently submerged during the Chesterian transgression (Zone 16). Regional transgressions also occurred during Meramecian time (Zone 13) and at the beginning of Pennsylvanian (Zone 20) time.