ISLAMABAD, November 9, 2026: Chinese scientists have identified two enormous tears in the Arabian tectonic plate beneath southeastern Iran, offering new insights into how Earth’s crust changes as continents collide and ancient ocean basins disappear.
The findings, published in the scientific journal Nature Geoscience, reveal how differences in the density and composition of rocks can create significant structural changes deep beneath the Earth’s surface.
The research, led by scientists from the Chinese Academy of Sciences, examined the complex geological processes affecting the Arabian Plate as it interacts with surrounding tectonic structures.
According to the study, part of the Arabian Plate consists of ancient oceanic crust that once formed the floor of the Neo-Tethys Ocean, a prehistoric body of water that separated major landmasses millions of years ago.
This oceanic crust contains relatively dense basaltic rocks, which tend to sink beneath neighbouring tectonic plates through a geological process known as subduction.
However, another section of the plate is composed of thicker, lighter continental crust, which behaves differently under tectonic pressure.
Researchers explained that the contrasting physical properties of oceanic and continental rocks create uneven forces within the plate, contributing to the formation of large tears.
While dense oceanic crust can descend into the Earth’s mantle, the more buoyant continental crust resists sinking, producing compression and deformation that can contribute to mountain building.
These competing geological processes help explain why tectonic plates may fracture or separate along certain boundaries as continents move toward one another.
The discovery provides additional evidence of the complex forces operating beneath southeastern Iran, a region shaped by the long-term interaction of the Arabian and Eurasian tectonic plates.
Scientists believe the findings could improve understanding of how ancient oceans gradually close, how continental collisions reshape the Earth’s crust and how major mountain systems develop over millions of years.
The research also contributes to broader studies of plate tectonics, particularly the transition from oceanic subduction to continental collision.
Although the findings reveal significant geological structures deep underground, the reported discovery does not, by itself, establish an immediate earthquake threat.
Researchers say understanding such processes is essential for reconstructing Earth’s geological history and explaining the forces responsible for major changes in the planet’s surface.