Science ❯ Earth Science ❯ Geology

Geological History

North America Continental Rifting Archean Eon Great Escarpment of Laurentia Pangaea

Study Says Ancient 1‑km Escarpment Exposed Grand Canyon Basement Long Before River Carving

Models of Rodinia’s breakup tie a rift‑flank cliff to prolonged erosion and the Great Unconformity while calling for field tests to confirm the idea.

Ancient Mantle Anomaly Beneath Appalachians Linked to Greenland Rift

Northern Appalachian Heat Anomaly Linked to Ancient Labrador Sea Rift