Scientists have discovered a geological phenomenon associated with the unfolding of Iraq and Iran’s underground. A large oceanic plate is being torn apart, dating back to the time of Pangea. Solid Earth published a recent study associated with this phenomenon, and it has left the scientific community both intrigued and curious about what this means for the evolution of the Earth.
What was Pangea?
Before we discuss the modern-day destruction of this structure, we need to define Pangea. About 300 million years ago, the Earth was in one form of a supercontinent called Pangea. In other words, it had not split yet into the different continents we know today, such as Africa, Asia, Europe and more. Then, as time went on, tectonic plates formed and separated Pangea into the world we know today with different continents.
When the supercontinent Pangaea split into the northern continent Laurasia and the southern continent Gondwana approximately 195 million years ago, the ocean plate was formerly the seafloor of Neotethys. According to the new study, the oceanic crust that once supported Neotethys is still having an impact on the Zagros mountain area, even though it closed more than 20 million years ago.
An iconic moment from the supercontinent era
As a subducted oceanic plate, the structure in question was formerly a component of the seabed that existed during the time of Pangea. Parts of the ancient oceanic crust were thrust beneath the landmasses and sank far into the Earth’s mantle as Pangea broke apart and the present continents drifted apart. However, scientists have observed that one of these ancient plates is tearing apart from beneath the Middle East.
This process of tearing apart has not been seen before, especially on this scale. Researchers have expressed that this process is transpiring at extreme depths between 400 and 600 kilometres underground. Pressure and extreme heat are causing the plate to fracture and lose its togetherness. The reason why the scientific community is intrigued is because these types of plates normally remain intact for hundreds of years.
Could the surface be affected by this?
Perhaps the question we should be asking is, Will this not affect life above? The tearing of this ancient plate holds significant geological implications; however, geologists and researchers state that they do not believe it will cause instant and rapid surface damage or effects; however, they have expressed that there are long-term implications that need to be observed with time.
According to some experts, the region’s tectonic activity may be impacted by this deep fracturing, which could affect how earthquakes behave. Since the Middle East is already a tectonically active region, any modifications to subducted plates may have an impact on the distribution of stress in the crust. The fact that this discovery advances our knowledge of plate tectonics is another important lesson to be learnt from it.
The fragmentation of an old oceanic plate raises the possibility that the deep interior of the Earth is more active than previously believed, which could alter models of the evolution of continents over millions of years. The Iraq and Iran history is unfolding in real-time because of the Pangea era. It is evident that we do not know much about the functions and evolutions of the Earth.
According to the researchers, knowing these processes can help guide the hunt for natural resources that occur in sedimentary rocks, like iron, phosphate, and copper. Large, lethal earthquakes are also produced by faults created by the collision of the Arabian and Eurasian plates. What we need to keep in mind is that the earth is evolving, one fracture at a time and we need to be prepared for the outcomes.