OCR Text |
Show Volcano'i Tempenture In the volrnno of Kiliiue.i the teui.eralure at I lie surface of the lava Is In the neighborhood of l.'UKI degrees Centigrade. I'.asalt, which Is the molten rock In Kilauec and many other volcanoes, may melt at either higher or lower temperatures, depending de-pending on their composition. Thus the melting point of s'lndstone would he very high, probably tn the neighborhood neigh-borhood of 1.000 to 1,700 degrees Centigrade, Cen-tigrade, depending on their purity. |