A team of researchers has found evidence that the Tintina fault in northwestern Canada, which stretches over 1,000 km, may still be active despite being dormant for millions of years. According to a report by Scitechdaily, the fault showed signs of many big earthquakes during the Quaternary Period, which spans from 2.6 million years ago to present.
The researchers used topographic data from satellite images and lidar surveys to examine the terrain around Dawson City, where they found that a 130-km portion of the fault had been displaced by about 1,000 meters over the past few million years. This suggests that the fault has moved multiple times due to powerful earthquakes.
The team’s findings indicate that the Tintina Fault may still be capable of producing significant future earthquakes, with one researcher estimating that a magnitude 7.5 earthquake could occur if the accumulated strain is released. The region relies heavily on mining operations, and a major earthquake could disrupt vital infrastructure.
While some seismic hazards are known through historical records, major faults can remain quiet for thousands of years between large earthquakes, making geological investigation essential to detect potential risks. The researchers’ study highlights the importance of using high-resolution data to re-examine active faults and assess their seismic risk.
Source: https://economictimes.indiatimes.com/news/international/canada/what-is-the-tintina-fault-in-canada-nations-silent-giant-that-could-unleash-massive-destruction/articleshow/122957282.cms?from=mdr