6. (Question B1, Figure 2.7) At what depth and pressure will peridotite at point X begin to melt if it is uplifted closer to Earth’s surface and its temperature remains the same?
1. 75 km, 24,000 atm
2. 65 km 20,000 atm
3. 40 km 13,000 atm
4. 20 km 8,000 atm
