Which land formation is not the result of a convergent boundary? a. hawaiian islands b. himalaya mountains c. marianas islands d. aleutian islands

The appropriate answer is A. The Hawaiian Islands. The Hawaiian Islands are a chain of volcanic islands that have formed over a hotspot in the Pacific plate. Hotspots are regions of intraplate volcanic activity where a mantle plume rises from within the mantle. This magma is low in silica and as such forms distinctive shield volcanoes. 
The Marianas and the Aleutian Islands are examples of an ocean to ocean convergence while the Himalayas were formed when two continental plates collided.  

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

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