marine science plate tectonics
Terms
undefined, object
copy deck
- Granite
- textural term applied to coarse-and medium-grained igneous rock
- Basalt
- fine grained igneous rock
- crust
- outer shell of solid Earth. The outermost layer of crust is composed of sediment deposits and basaltic rocks.bottom is mohorovicic discontinuity.
- Divergent Boundary
- move apart
- convergent Boundary
- when two plates come together
- transform plate boundary
- shifting plate
- trenches
- long narrow deep depression of the ocean floor.
- Seamounts
- elevation rising 900 meters or more from the ocean bottom
- island arc
- island chain thats curved. trench on the convex side. assosciated with volcanoes and subduction zones.
- midocean ridge
- great median arch or sea bottom swell extending the length of an ocean basin and roughly paralleling the continental margins; area of oceanic crustal formation
- Rift Valley
- narrow trough formed by faulting in a divergence area
- Density
- mass per unit volume of a substance
- Pillow Lava
- a characteristic form of lava extruded underwater, where the molten rock forms lumpy rounded forms resembling pillows
- Spreading Rates
- rates at which the sea floor spreads
- Hawaii
- islands which are formed by hotspots
- pearl Reef
- island of hawaii
- Aleutian trench
- trench near europe
- East Pacific rise and the Mid atlatic Ridge
- places where robert ballard did the testings
- hydrothermal vents
- associated with high temperature groundwaters for example alteration or precipitation of minerals and mineral ores
- Photosynthesis vs. chemosynthesis
- photosyntisis using living things use the sunlight while chemosynthesis uses the heat sulfate acid to produce sugar
- Alfred Wegner
- thought of the theory of continental drift and pangea
- Laurasia, gondwanaland and pangea
- triassic period of continental drift
- deep sea drilling project and the Glomar Challenger
- helped scientist discover geology and about the deep sea ocean floor
- Microfossils and Core samples
- helped the scientists discover the ocean sea floor
- Continent
- land that's on the continental plates
- Alvin and Robert Ballard
- saw the first living organisms in the deep sea near the hydrothermal vents