РІР‚СљI was really excited,РІР‚Сњ said Blisniuk, who said it took years to produce the data needed to make a convincing case that the ancient channels did indeed once connect to Pushawalla Canyon. At that rate, they realized, it accounted for the vast majority of the strain along the southern San Andreas fault.Р”В«y contrast, they calculated that the Banning strand had a slip rate of just 2.5 millimeters per year. The second, about 1.3 kilometers (less than a mile) away, was about 70,000 years old and the third beheaded channel, about 0.7 kilometer (less than half a mile) away, was about 25,000 years old.Р”В«ased on these three landmarks, the researchers calculated that the average slip rate for the Mission Creek strand was about 21.6 millimeters (less than an inch) per year. The oldest channel, which lay about 2 kilometers (more than a mile) away from the current canyon, was roughly 80,000 to 95,000 years old. In each of the channels, she and her team dated the ages of rocks and soil.

These maps show some scenarios.Р”В«lisniuk walked the area to get a better look at these telltale signs of ancient rupture.

РІР‚ВTectonic time bomb:РІР‚в„ў Mapping where massive California earthquakes cause the most shaking, destructionР”В¬alifornia has suffered some destructive earthquakes in the last few decades but much bigger quakes are possible.

The san andreas fault