If a substantial amount of calcium is discovered, coronary artery disease may be likely. A CT coronary angiogram, in which you receive a contrast dye injected intravenously during a CT scan, also can generate images of your heart arteries.
At converging plate boundaries, two situations are possible. First, both volcanoes and earthquakes form where one plate sinks under the other. This process, called subduction, takes place because one plate is denser than the other. The denser plate, which invariably has oceanic crust on its top, does the sinking. Second, only earthquakes occur when two plates collide (obduct), building a mountain range.
Most earthquakes occur on plate boundaries for a variety of reasons. When plates in the earth's crust move, they scrape or bump each other on the edges and boundaries. Therefo â¦ re, the movements of the plates are more likely to be felt along the edges, where all of the activity takes place.olcanoes usually occur along the boundaries of tectonic plates but they can also occur far from any boundary, over a 'hot spot'. The Hawaiian Islands are a string of volcanoe â¦ s that formed as the Pacific Plate slowly moved over a hot spot.