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.
So scientists can tell where an earthquake is likely to happen, like along the San Andreas Fault. They can look at historical records and get an estimate of how often earthquakes tend to happen along certain transform faults, too.ating Newest Oldest. Best Answer: Most earthquakes occur because of movements along transform plate fault boundaries. Here, you have two plates moving past each other that occasionally get stuck along their margins. Where they come into contact and can't move, pressure builds up.