This 'Ring of Fire' can swallow entire Atlantic Ocean if sleeping subduction zone beneath it awakens
Produced by: Tarun Mishra
Image credit: Mr. Elliot Lim, CIRES & NOAA/NCEI
Formation of New 'Ring of Fire'
Recent research report by Live Science suggests that a dormant subduction zone beneath the Gibraltar Strait may awaken, potentially leading to the creation of a new geological phenomenon akin to the Pacific Ocean's 'Ring of Fire.'
Subduction Zone Creeping Westward
The Gibraltar arc, a subduction zone situated between Portugal and Morocco, has been gradually migrating westward over millions of years. While it appeared dormant in recent times, new evidence indicates that it may be entering a period of reactivation.
Potential 'Subduction Invasion' of the Atlantic
Scientists predict that the Gibraltar arc could resume its westward advance, eventually breaching into the Atlantic Ocean in a process known as "subduction invasion." This phenomenon could reshape the oceanic landscape over the course of millions of years.
Study Utilizes Advanced Computer Modelling
Researchers employed sophisticated computer simulations to analyse the evolution of the Gibraltar arc from its inception to the present day. These models provide insights into the subduction zone behaviour and its potential future impact.
Implications for Oceanic Crust Recycling
The invasion of the Atlantic by the Gibraltar arc could result in the formation of an Atlantic subduction system, akin to the Pacific's 'Ring of Fire.' This would involve the recycling of oceanic crust into the mantle, gradually altering the ocean's structure.
Explanation for Seismic and Volcanic Activity
The relative lack of seismic and volcanic activity in the region surrounding the Gibraltar arc may be attributed to its prolonged period of dormancy. The subduction zone's resumption of movement could explain the observed tectonic silence.
Future Evolution of the Gibraltar Arc
Researchers predict that the Gibraltar arc will continue to advance westward, gradually widening and propagating oceanward over the next several million years. This process may fundamentally alter the geological dynamics of the region.
Significance of Advanced Modelling Techniques
The ability to simulate the formation and evolution of the Gibraltar arc with unprecedented detail underscores the advancements in geological research. Such studies provide invaluable insights into the Earth's dynamic processes and long-term geological transformations.