The start of Plate Tectonics on Earth

Invited talk on Ancient Rifts given by Dr. Robert J Stern at theJune 2021 GeoPRIMS workshop "Extensional Processes Across Tectonic Settings and Time Scales – Planning for the Next Decade" https://www.fort-collins-meeting-info.org/about . The talk explores how continental rifts are likely to have changed through time as Earth has cooled. It explores Earth's tectonic history, considers rifts on Venus and Mars, and presents a new interpretation of the ~1 Ga MId-Continent Rift System of North America." Presentation made with UTD GSS Presenter Prof. Robert J Stern Video Editor Ning Wang