shallow portions of the ocean floor that are made of continental crust
ocean basin floor
area of deep-ocean floor between the continental margin and the oceanic ridge
An underwater moutain chain where new ocean floor is formed
thick layers of undisturbed sediment cover continental margins
very litle volcanic or earthquake activity
crust plunging beneath continental crust- narrow continental margin - results in volcanoes and earthquakes
gently sloping submerged surface extending from shore line contains oil, natural gas, sand, gravel
a steep incline leading down from the edge of the continental shelf
deep, steep-sided valleys cut into the continental slope
down slope movements of dense, sediment-laden water
-sand and mud on the continental shelf
the gently sloping surface at the base of the continental slope
deep ocean trenches
a deep valley along the ocean floor through which oceanic crust slowly sinks towards the mantle
deepest known place on Earth
Ring of Fire
major belt of volcanoes that rims the Pacific Ocean
flat, sediment covered areas in the ocean basin
volcanic peaks that have not reached the ocean surface
flattened seamounts caused by erosion from waves and currents
sea floor spreading
occurs where two lithospheric plates are moving apart
zones where heated, mineral-rich water ecapes through cracks in ocean crust
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