what is a scientific explanation of why the western part of the U.S. is at risk for volcanoes?

Question

help would be totally appreciated

Answer 1

The western part of the US is located at a convergent tectonic boundary. One plate is sliding under another and the melting magma rises through cracks to form volcanoes. This area is known as the "Pacific Ring of Fire" because of this occurrence.

Answer 2

The movement of the Teutonic plates is what causes the volcano activity. One of the deepest volcanoes is Reventador in Ecuador. It is about 25 miles deep and the normal is about 15 miles deep. The moltent rock that is formed under all that pressure is different and of great interest.

Answer 3

I believe the area in question is called a Back Arc Island Chain, and is due to the subduction of the Pacific Plate (and the Juan de Fuca Plate) under the North American Craton. Another similar chain is the Allutian Islands of southwest Alaska. When subduction of an oceanic plate under a continental plate occurs, island arcs are formed and they are volcanic in nature.

Answer 4

The tectonic plate that is just west of that area is moving toward the continental United States, so earthquakes and volcanoes are bound to happen where the two plates meet.

Answer 5

There is a fault I believe it is called the San Andreas fault.in this area, that is why there are volcanos and earthquakes in that area when ever the plates in that fault move they can cause earthquakes as well as volcanos because it leave and opening where the lava can come up through.

Answer 6

There is a fault line which runs through the western us near and through California. this in turn causes volcanic activity to either occur or have a greater chance of occurring.