Small Branch Faults May Trigger Quakes

This is a Alaska news story, published by MailOnline, that relates primarily to Stein news.

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devastating earthquakes

MailOnline

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How little-known fault lines could trigger the next earthquake in US

Summary

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85% Informative

Five of the largest quakes in the last 25 years originated on 'mangy wannabe' 'branch' faults that stem from larger ones.

These 'wannabe faults' are found branching off of major fault lines like the San Andreas and the Queen Charlotte Fault in Alaska and Canada .

The researchers propose that branch faults can act as 'on-ramps' to generate ruptures on 'superhighway' continental transform faults.

The Big One is a hypothetical, but inevitable, high-magnitude continental transform earthquake that would decimate entire cities. Experts have estimated that this quake would cause roughly 1,800 deaths, 50,000 injuries and $200 billion in damage, according to the California Earthquake Authority . The seismic event is predicted to occur somewhere along the San Andreas or the Cascadia Subduction Zone . But if Stein and Bird 's theory is correct, it could originate on a nearby branch fault - making it even harder to predict and prepare for..

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informal

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English

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