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.
There are so many earthquakes in Japan because the country is in what is called the Pacific Ring of Fire which is an area where large numbers of earthquakes and volcanic erupt â¦ ions occur in the basin of the Pacific Ocean.apan has earthquakes and volcanoes because the Pacific and Philipines plates underneath the Eurasian platesare losing water to the mantle rocks as they go down. it cause the â¦ mantle rock to melt, it form volcanoes from magma. the earthquakes are caused by plates scraping against each other.