Volcanism describes these processes.
Your answer would be Tectonic.
Tectonic plates move in various directions, and move slowly. Due to the movement of tectonic plates the earth cracks, and shakes which is called an earch quake. Tectonic plates move constently everyday, and you can't feel it because it's slow. Wehn tectonic plates move quickly, the earth starts to shake. The most common places that have tectonic plates have a higher chance of having an earthquake, even a tusnami.
Because one might have other minerals in it as well
Definition, Location, Example
The Corn Belt,is an area in the midwestern United States, roughly covering western Indiana, Illinois, Iowa, Missouri, eastern Nebraska, and eastern Kansas, in which corn and soybeans are the dominant crops ("Corn Belt Region").
Due to loose environmental and worker safety laws in factories, Death Rates along the Texas-Mexico border are some of the world's highest
what make people cringe is that 85 % of the bodies that found dead in Texas-Mexico border are the workers that came from Mexico, not Texas.
hope this helps
