Major ancient faults like that can remain as weak zones in the Earth’s crust and then focus ongoing tectonic strain,” noted ...

The Tintina fault stretches 1,000 kilometers (621 miles) across northern Canada, crossing the Yukon and ending in Alaska. The fault is thought to have been dormant for 40 million years, but that ...

A new assessment of the enormous Tintina fault suggests it has been slowly accumulating strain over thousands of years.