Overview

• A Geology study by the University of Southampton, GFZ and University of Florence traces the Northern Appalachian Anomaly to Labrador Sea rifting 90–80 million years ago.
• Researchers used seismic tomography and geodynamic simulations to confirm a ‘mantle wave’ of convective instabilities propels deep heat inland.
• The anomaly spans roughly 350 kilometers across at about 200 kilometers depth and drifts westward at 20 kilometers per million years toward New York over the next 10–15 million years.
• A corresponding heat anomaly beneath north-central Greenland appears to be a mirror image twin that shares the same ancient rifting origin.
• Further deep seismic surveys are planned to detect additional mantle drips and assess their role in Appalachian uplift and continental stability.