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Geology midterm
Plate Tectonics and Plate Theory
| Term | Definition |
|---|---|
| contiental drift | |
| glacial stirations | |
| paleomagnetism | a mineral in rocks preserves a record of magnetic field at the same time of their formation |
| inclination | angle from horizontal to the magnet |
| sea floor spreading | occurs at mid ocean ridge, no oceanic crust is formed through the volcanic activity |
| mid ocean ridge | |
| plate tectonics | scientific theory describing the large scarce motion of earths lithosphere |
| Wagners theory of continental drift & evidence | Pangea- believed continents were moving due to fossils |
| Paleomagnetism studies | the study of ancient magnetism in rocks |
| Deccan Traps and magnetic anomalies in sea floor dikes | |
| How fast evidence suggests the Plates are moving | |
| sea floor spreading- where does it spread | |
| tectonic plate | |
| mid ocean ridge | |
| convergent boundaries | |
| transform boundaries | |
| divergent boundaries | |
| linear sea | |
| rift valley | |
| upwarping | |
| ssubduction | |
| tench | |
| island arc | |
| hot spot | |
| volcanic chain | |
| ridge push force | |
| slab pull force | |
| how do you know the direction of plate movement | |
| Hazzards of divergent boundaries | |
| hazards of transform boundaries | |
| hazards of convergent | |
| how does an ocean grow | |
| how can a plate boundary die | |
| how can you identify which plate will subduct under another | |
| know an example where boundaries subduct each other |