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North America Faults May Be Linked As Scientists Uncover Strange Earthquake Clue
M
Moneycontrol•07-10-2026, 17:11
North America Faults May Be Linked As Scientists Uncover Strange Earthquake Clue
- •Scientists analyzing seafloor sediment cores have found evidence that the Cascadia Subduction Zone and the northern San Andreas Fault may be connected.
- •Researchers discovered unusual sediment sequences called doublets, suggesting that major earthquakes along both fault systems occurred close together in time.
- •Data indicates three potential instances over the past 1,500 years where earthquakes on the two separate fault systems happened within minutes to hours of each other.
- •While not implying that every quake will trigger another, the finding of partial synchronisation could significantly impact emergency planning and infrastructure preparedness along the West Coast.
Key Questions Answered
The geological evidence suggests a connection between the Cascadia Subduction Zone and the northern San Andreas Fault.
Researchers examined sediment cores from the seafloor containing turbidite deposits and identified unusual doublets indicating earthquakes occurring close together in time.
Researchers identified cases where earthquakes linked to the two fault systems may have occurred within minutes to hours of one another, with the most recent example appearing to date to 1700.
