Consider plate tectonic processes and related geologic materials and features. What are the correct statements? Ocean floors are made mostly of weak basalts and are less dense than granitic continental rocks; and that is why ocean water can push down on the basalts to create the basins that hold the ocean water. Ocean floors are much younger in age than the old cores of shield areas of continents. At Ocean-Continent Convergent Plate Boundaires the ocean floor subducts below the continent and causes a pattern of earthquakes that are deeper as the map distance from the trench increases. The Hawaiian Islands and Emperor seamount chain occur in the Pacific Ocean along a transform plate boundary
Consider plate tectonic processes and related geologic materials and features. What are the correct statements?
Ocean floors are made mostly of weak basalts and are less dense than granitic continental rocks; and that is why ocean water can push down on the basalts to create the basins that hold the ocean water.
Ocean floors are much younger in age than the old cores of shield areas of continents.
At Ocean-Continent Convergent Plate Boundaires the ocean floor subducts below the continent and causes a pattern of earthquakes that are deeper as the map distance from the trench increases.
The Hawaiian Islands and Emperor seamount chain occur in the Pacific Ocean along a transform plate boundary.
The rate at which human fingernails grow (a few cm per year) is roughly simialr to how fast the seafloor spreads apart along the Mid-Atlantic Ridge.
Basalt is the main type of volcanic rock and ash erupted at the volcanoes of the Andes Mountsins (located along a plate boundary along the west coast of South America).
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