The nearest large earthquake fault line to Pennsylvania is the New Madrid Seismic Zone, located in the central United States, primarily in southeastern Missouri. This fault line is known for its significant historical earthquakes in the early 19th century. Additionally, the eastern United States has smaller faults, such as the Ramapo Fault Zone, which can also produce seismic activity, though typically of lower magnitude compared to the New Madrid area.
A large crack in the ground is called a fault which is caused by and earthquake.
That's called an earthquake.
The odds of Ontario to have a large scale earthquake is slim to none due to the fact that Ontario doesn't sit on a fault line. The fault lines are what causes earthquake. For example, San Fransisco sits directly on top of the San Andreas fault line. When an earthquake hits, the impact is always devastating. Even recently with the 7.0 earthquake in Haiti, Haiti sits close to the Carribean fault line. This is what caused the Earthquake. Waterloo Ontario had an earthquake @1:48pmr June 23 2010 "3.5 or higher"
A large earthquake on the San Andreas fault offset the wallace creek by 130 meters!
The effect is generally known as an earthquake.
Around 30 years is what scientists predict
fault
There is no way of predicting an earthquake, but it is unlikely that a major earthquake will strike a location on any given day. The San Andreas Fault probably isn't capable of generating something as large as an 8.9.
If there is little or no earthquake activity on a fault, or a section of a fault then it may be: Inactive (no longer moving) Locked (If it is known to be building up strain for a future large earthquake, i.e. San Andreas) or It may be releasing nearly all it's stress by creeping, rather than in large quakes.
Large magnitude earthquakes are infrequent because they require a significant amount of built-up stress to be released along fault lines. This process can take decades or even centuries to accumulate enough stress to generate a large earthquake. Additionally, the energy released in a large earthquake can temporarily reduce stress along the fault line, making another large earthquake less likely in the immediate aftermath.
No, the San Andreas fault is not the only fault in California. California is known for its tectonic activity, and there are numerous faults in the state, such as the Hayward Fault, the Calaveras Fault, and the Garlock Fault, among others.
Sounds suspiciously like an earthquake. Indeed, it is.