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Southern California Overdue for Major Earthquake &...

A landmark study of historic seismic activity shows that Southern California is long overdue for a major earthquake along the San Andreas fault. The study, produced after several years of field studies found that earthquakes along the San Andreas fault have occurred far more often than previously believed. Read Full...

Earthquake Near Salton Sea Triggered By Baja Easte...

The moderate 5.4 magnitude earthquake that rolled through Southern California on Wednesday was probably triggered by the Mexicali temblor that hit Easter Sunday, seismologists said. Earthquake scientists’ preliminary analysis had already shown that the 7.2 magnitude Baja California quake placed more pressure on at least two fault zones in Southern California — the Elsinore and the San Jacinto. Wednesday’s...

5.0 Earthquake Shakes Ottawa, Toronto, and U.S.

A magnitude-5.0 earthquake struck at the Ontario-Quebec border region of Canada on Wednesday, the U.S. Geological Survey said, and homes and businesses were shaken from Canada’s capital in Ottawa on south to an arc of U.S. states. There were no immediate reports of injuries or damage. Morgan Moschetti, a seismologist with the USGS, said it was not unusual for an earthquake to be felt 300 miles (482 kilometers) from the...

Quakes Under Santa Monica Bay Rattle Southern Cali...

Small earthquakes under Santa Monica Bay shook parts of Southern California on Monday.By evening, the largest had been a magnitude-3.7 tremor at 4:59 p.m. and a magnitude-3.5 at 2:17 a.m., centered a few miles west of the Los Angeles suburb of Hermosa Beach, according to the U.S. Geological Survey. A USGS website for citizen reports of quake intensity showed the larger quakes were felt in an arc from northwest of Los Angeles...

San Andreas-Like Earthquake Fault Found in Eastern...

For 30 years geologists have been puzzled by a remarkably straight magnetic line that runs between New York and Alabama along the Appalachians. A more recent aerial magnetic survey of the Alabama end of the line suggests that it’s probably a 500-million-year-old San Andreas-style fault that appears to have slipped 137 miles (220 kilometers) to the right in the distant past. If so, it’s no surprise that the most...
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