You stop along the side of the highway to look at a 1,000 m. high outcrop. you decide to climb tothe outcrop and look at the rocks. the base of the outcrop has a layer of olivine and calciumplagioclase. 100 meters up the cliff the rock is pyroxene and a sodium-bearing calcium plagioclase. at 350 meters, the rock contains amphibole and a calcium-bearing sodic plagioclase. at 650meters, the minerals are biotite and sodium plagioclase. from 900 meters to the top the rock isgranite. explain how this out crop could have been formed.