The Geology of Button Bay State Park

The text examines the park's glacial and postglacial geology, focusing on clay banks and a beach where water-worn concretions shaped like button molds are abundant. It traces the retreat of the last ice lobe through the Champlain–Hudson corridor, describes the formation and successive stages of proglacial lakes including Coveville and Lake Vermont phases, and interprets lake-level features and terraces. The clay sequences are used to document changing water levels, subtle tilting of the crust, and shoreline processes, while linking field observations—stratigraphy, shorelines, and concretions—to the region's evolving paleogeography and present landscape.