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geology
rocks and minerals ; plate tectonics, world map , California provinces
| Question | Answer |
|---|---|
| how many California provinces | 13 |
| name the major lithospheric plates | North American plate, Eurasian plate, South American plate, African plate |
| what is divergent boundary | plates move, along in opposite directions; help create new crust. Normally occurs on ocean floor. |
| example of divergent boundary | mid Atlantic ridge |
| what is connvergent | nown as a destructive plate boundary (because of subduction), is an actively deforming region where two (or more) tectonic plates or fragments of lithosphere move toward one another and collide |
| ocean crust to ocean crust (oc to Oc) | 2 plates collide, one is suducted under the other. ex Japenese subduction; resposible for ring of fire, Volanoes yes and earthquakes |
| 3 types of convergent boundaries | oceanic to oceanic, ocean- Continental, Continental- Continental |
| Continental- Continental | 2 continents collide,neither is subducted, e-quakes yes; no volcanoes; example Himalayan mts |
| ocean crust- Continental | the denser and heavier ocean crust is forced beneath the less dense ( buoyant) continental crust; ocean trenches form. ex cascade mt pac Nw Andes mts |
| transform boundary | no creation or destruction of crust. 2 plates slide horizontally past one another side by side (strike slip) Eg yes ex (Saf) |
| hot spot | located in the middle of a plate.Plume or pipein theocean allows melted rock from earth interior re flow upward.lithosphere mover over the hot spot creating a new volcanoes. As the plate movesit creates a long chain of volcanoes,when platemovesDormant |