| Definitions | Term |
| where ocean lithosphere subducts beneath ocean(3) | |
| plate boundaries that generate continental volcanic arcs(4) | |
| first step in andean type mountain belt(3) | |
| subduction zone develops(3) | |
| chaotic accumulation of ocean crust(2) | |
| crustal fragment with geological history | |
| fragments of original continents | |
| concept of floating crust in gravitational balance | |
| establishing a new level of gravitational equilibrium by loading or unloading | |
| process that alters mountains | |