Scientists Were Wrong - Turkey's Crust Is Disintegrating

Scientists Were Wrong – Turkey’s Crust Is Disintegrating

Written by Fabio Lucas Carvalho

Published on 19/01/2026 at 00:26

Estudo com fluxos de lava mostra que a Falha de Tuz Gölü, na Turquia, é extensional e se alarga cerca de 1 milímetro por ano.

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When Analyzing Ancient Fractured Lava Flows Along the Tuz Gölü Fault, Over 200 Kilometers Long in Central Turkey, Researchers from Curtin University Identified Direct Evidence of Slow Continental Separation, with an Average Rate of About 1 Millimeter per Year, Changing the Understanding of Seismic Risks and Regional Tectonic Deformation

The study of ancient fractured lava flows along the Tuz Gölü Fault Zone in Turkey revealed that the geological structure is widening at an approximate rate of 1 millimeter per year, providing new evidence on how continents slowly separate and enhancing the assessment of seismic risks.

Geological Evidence in a Fault Over 200 Kilometers Long

Researchers from Curtin University analyzed ancient lava flows that solidified and were subsequently fractured along the Tuz Gölü Fault Zone, a geological formation over 200 kilometers long and clearly visible from space. The study provided new clues about continental deformation processes over time.

The research demonstrated that the fault is gradually widening rather than displaying only lateral displacement.

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Confirmation of Extensional Fault in Central Turkey

According to Professor Schmitt, while Turkey is widely known for slip faults associated with earthquakes, the study confirms for the first time that the Tuz Gölü Fault is an extensional fault. In this type of structure, the land blocks on both sides move away from each other.

This dynamic differs from the previous model that considered displacement predominantly lateral. The confirmation of the extensional nature alters the interpretation of tectonic processes in the region and provides a more accurate basis for understanding how the crust behaves under prolonged stresses.

The results indicate that separation occurs slowly and continuously over thousands of years.

The estimated rate of about 1 millimeter per year was considered consistent with the geometric reconstruction of ancient lava flows that crossed the fault before being fragmented by earthquakes.

Reconstruction of Lava Flows from the Hasandağ Volcano

The researchers identified that several lava flows from the Hasandağ volcano flowed over the fault, cooled down, and were subsequently broken by seismic events. The team was able to reconstruct the original shape of these rocks and accurately determine their age.

This reconstruction allowed for tracking how rocks that were once connected gradually separated over time. According to the authors, the results unequivocally reveal that the fault is opening, rather than sliding laterally as previously thought.

Understanding these movements is deemed crucial not only for assessing seismic and volcanic threats but also for improving global models that describe how continents deform. The data obtained help explain how tectonic energy is released in regions of continental collision.

Advanced Techniques and Zircon Dating

The team applied advanced scientific methods that combined remote sensing data, ion microprobe analyses at the John de Laeter Center, and helium dating performed at the Western Australia Thermochronology Center. These techniques allowed for determining the exact age of the lava flows and measuring the accumulated displacement over thousands of years.

Associate Professor Martin Danišík, a co-author of the study, explained that tiny zircon crystals present in the lava act as natural geological timekeepers. These crystals retain helium produced by the radioactive decay of traces of uranium and thorium, preserving a detailed record of the thermal history of the rock.

By measuring uranium, thorium, and helium in the zircon crystals, the researchers were able to establish when the flows erupted, overflowed the fault, and subsequently cooled. This approach provided a reliable timeline for assessing the rate of separation along the fault, even in the face of slow and hardly observable processes.

Slow Movements and Interaction Between Tectonic Plates

Co-author Janet Harvey, a remote sensing specialist at Curtin University, highlighted that earthquakes on the Tuz Gölü Fault occur less frequently than on the fast-moving faults in northern and eastern Turkey. Therefore, landscape deformation studies provide information that the modern seismic record alone cannot capture.

The fault is situated at a strategic point where the Eurasian, Arabian, and African plates interact. According to Harvey, studying its movements helps understand how tension is distributed when continents collide, offering applicable insights for other regions of continental deformation.

The authors emphasize that the knowledge gained can be used in areas along the Alpine-Himalayan range and in other similar zones around the world.

The research also reinforces the importance of revising outdated geological assumptions in light of modern measurement techniques capable of accurately quantifying how continents respond to tectonic pressures over geological time.

Scientists Were Wrong – Turkey’s Crust Is Disintegrating

Geological Evidence in a Fault Over 200 Kilometers Long

Confirmation of Extensional Fault in Central Turkey

Reconstruction of Lava Flows from the Hasandağ Volcano

Advanced Techniques and Zircon Dating

Slow Movements and Interaction Between Tectonic Plates

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Scientists Were Wrong – Turkey’s Crust Is Disintegrating

Geological Evidence in a Fault Over 200 Kilometers Long

Confirmation of Extensional Fault in Central Turkey

Reconstruction of Lava Flows from the Hasandağ Volcano

Advanced Techniques and Zircon Dating

Slow Movements and Interaction Between Tectonic Plates

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