Bermuda's 20km Deep Rock Layer Rewrites Oceanic Crust Theories

• Scientists discovered an unusually thick, 20-kilometer rock layer beneath Bermuda's seafloor, challenging current theories of oceanic crust formation.
• This mysterious subsurface layer sits within the tectonic plate, not directly above the Earth's mantle, a structure described as highly unusual.
• The rock layer, possibly formed from ancient, carbon-rich volcanism dating back to Pangea, may explain why Bermuda's oceanic swell has not subsided.
• Seismic data revealed the less dense layer, which researchers believe could be unique to Bermuda due to the Atlantic Ocean's younger geological setting.
• The findings could offer a rare geological window, potentially reshaping scientific understanding of mantle behavior and Earth's processes.

Why It Matters: It reshapes understanding of oceanic crust formation and mantle behavior.