Most of the earthquakes were caused by the motion on the fault. The plates edge that shift in a pace of some centimeters annually stores stress on the boundary and suddenly break the fault plane after the stress are greater in power that it can break the rocks. That is what causes of earthquake. The geological fault is broken because the movement of tectonic plates. The fault can be near or far from the plates boundary.
- Massive water accumulation
In addition, earthquake may also occur as a result of water accumulation in a big mass in the dam like what happened in Karibia, Zambia, Africa.
- Tectonic Plate
Earthquake that occur due to tectonic plate movement. This is a geologic process of earth rocks.
- Volcanic Eruption
Earthquake can occur because there is a sign that there would be eruption of an active volcanoes.
- Liquid injection
While some other earthquake might occur as a result of liquid injection from and to the earth like what happened in rocky mountain arsenal and some geothermal power plants
Differ from other factors what causes a earthquake, this kind of earthquake occurs as a result of human action. This action is usually taken when researchers conduct secret nuclear weapons done by the government.
The mining activity that generally is performed by the illegal activity. It can potentially caused an earthquake to happen. The mining can use bombings to make a tunnel and use high capacity of bombs for their own benefit. This illegal activity is hidden and no one know about their activities. There are no regulations about this illegal activity. Because the activity usually happen in a remote areas far from the society and authorities.
Those are all about some factors behind an earthquake. Some factors might happen due to natural causes whilst some others might happen due to human factors. However, after knowing all factors what causes an earthquake above, human can take some preventive action to minimize the impact of the earthquake.