Across
- 3. the gradual movement of the continents across the earth's surface through geological time.
- 6. was a supercontinent that existed during the late Paleozoic and early Mesozoic eras.
- 7. a process that occurs at mid-ocean ridges
- 11. also known as a destructive plate boundary (because of subduction), is an actively
- 14. constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other.
- 15. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Down
- 1. a line on an isotope ratio diagram denoting a suite of rock or mineral
- 2. Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.
- 4. a large elongated depression with steep walls formed by the downward displacement
- 5. also known as conservative plate boundary since these faults neither create nor destroy lithosphere
- 8. the branch of geophysics concerned with the magnetism in rocks
- 9. an instrument used for measuring magnetic forces, especially the earth's magnetism.
- 10. is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.
- 12. sliding plate force is a proposed mechanism for place
- 13. is the portion of motion of a tectonic plate that can be accounted for by its subduction.