Image placeholder
science
informative
sensational

Seismologists reveal why Bermuda seems to float in the ocean

Dec 16, 2025, 3:52 AM10
(Update: Dec 16, 2025, 3:52 AM)
British Overseas Territory in the North Atlantic Ocean

Seismologists reveal why Bermuda seems to float in the ocean

  • Seismologists have discovered a thick, less dense plume of rock lying beneath Bermuda, measuring over 12 miles thick.
  • This unique geological formation helps explain why the archipelago has not sunk after volcanic activity ceased millions of years ago.
  • The discovery sheds light on a previously unobserved geological structure in islands situated within tectonic plates.
Share opinion
Tip: Add insight, not just a reaction
1

Story

Beneath the archipelago of Bermuda, a new geological discovery has come to light, revealing a previously unseen plume of rock responsible for the island's apparent floating position in the Atlantic Ocean. The region, characterized by its lack of recent volcanic activity, has intrigued scientists. Seismologists utilized advanced seismic recordings from a station in Bermuda to probe around 31 miles deep, uncovering a thick mass of rock measured at over 12 miles, which is less dense than the surrounding oceanic crust and upper mantle. This unique formation has profound implications for understanding why Bermuda has remained above water despite its volcanoes becoming inactive millions of years ago. The last significant volcanic activity in Bermuda occurred approximately 30 million years ago. During this period, mantle rock was likely injected into the crust, forming a raft-like structure that elevated the ocean floor by over 1,600 feet. This happened during the period when the ancestors of modern-day Bermuda formed. The existence of this thick layer of less dense rock beneath Bermuda is a groundbreaking find for geologists, marking a phenomenon not observed in other islands positioned in the middle of tectonic plates. Furthermore, the insights gained from analyzing seismic waves as they traveled through Earth's layers could redefine our understanding of geological processes occurring in stable tectonic environments. Traditionally, the oceanic crust rests above a rigid upper mantle, but Bermuda's constitution suggests that there is a distinct layer formed by geological processes unique to Bermuda itself, diverging from established geological norms. This phenomenon raises questions regarding the geological history and formation of not only Bermuda but potential similarities in other oceanic islands. In conclusion, the discovery provides answers to long-standing questions surrounding the stability and formation of Bermuda, highlighting the extraordinary geological frameworks that can evolve in a seemingly unlikely environment. It encourages continued exploration and research into the Earth's geological mysteries, emphasizing that there is still much to learn about the structures beneath our feet and how they impact the geography and ecology that we observe above.

2026 All rights reserved