Why is the San Andreas fault line so active?

Answer 1

The San Andreas Fault is highly active due to the tectonic movements of the Pacific and North American plates, which slide past each other along the fault line. This lateral motion creates immense stress that builds up over time, leading to earthquakes when the stress is released. Additionally, the fault's complex geological features and history of seismic activity contribute to its continued volatility. The interaction of these tectonic forces ensures that the San Andreas Fault remains one of the most studied and monitored fault lines in the world.