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Suez Rift Reclassified as Slowly Active, With Measurable Widening, Study Finds

New geomorphic plus coral‑terrace evidence indicates rifting decelerated rather than ceased roughly five million years ago.

Overview

  • Researchers report the Gulf of Suez is extending at approximately 0.26–0.55 millimeters per year, overturning its long-held 'failed rift' label.
  • An analysis spanning roughly 300 kilometers used 300 digital elevation profiles to detect fault-related steps and persistent landscape uplift.
  • Ancient coral terraces measured at 25 sites now sit about 18.5 meters above present sea level, indicating ongoing uplift from active faults.
  • Current deformation rates include uplift up to ~0.13 millimeters per year and extension comparable to other mildly active rift zones such as the Basin and Range.
  • The peer‑reviewed findings in Geophysical Research Letters argue for reassessing supposedly inactive rifts and refining long‑term seismic and landscape models.