The "Impossible" Rocks Found On Top Of A Volcanic Island
In the southwest Indian Ocean , the volcanic island of Anjouan is home to a unknown geological mystery . On the island , residents and geologists keep finding a character of rock that should n’t be there . The island formed on an ocean basin , whentectonic platesshifted away from each other and magma moved up and cool down to form basalt , of which the island is made . On Anjouan you should not expect to find the aqueous rock quartzite , a type of sandstone made from quartz Baroness Dudevant grain that have been collected in river deltas , before being compact into quartzite over metre ....