TABLE 6.3 Idealized Melting Temperatures of Granite (with water) and Basalt at Various Depths Within Earth GRANITE (WITH WATER) BASALT (DRY) DEPTH (KM) MELTING TEMP. (CELSIUS) MELTING TEMP. (CELSIUS) DEPTH (KM) 0 950° 0 1100° 10 700° 25 1160° 20 660° 50 1250° 30 625° 100 1400° 40 630° 150 1600°