Deeper Regions Of The Ocean Floor Tend To Be Younger

1 basaltic rock is found to be progressively younger at increasing distances from a mid ocean ridge 2 marine fossils are often found in deep well drill cores 3 the present continents appear to fit together as pieces of a larger land mass 4 areas of shallow water seas tend to accumulate sediment which gradually sinks also please help me with.

Deeper regions of the ocean floor tend to be younger. Oceanic crust is about 6 km 4 miles thick. Oceanic crust the outermost layer of earth s lithosphere that is found under the oceans and formed at spreading centres on oceanic ridges which occur at divergent plate boundaries. A deeper regions of the ocean floor tend to be younger. Plankton is found distributed throughout the world s oceans and is a vital ingredient in the success of many marine animals.

The oldest sediments are comparatively young because. Oldest oceanic crust is only present near trenches d. The ocean floor sediments near the surface remain unconsolidated. It is composed of several layers not including the overlying sediment.

B the pacific is larger than the atlantic because it contains older oceanic floor. However at deeper ocean floor such as hundreds to thousands of meters the sediments become lithified. A the rocks of the underlying ocean floor react chemically with the lowest sediments converting them directly into rock b the ocean floor is recycled through plate tectonics dragging the oldest sediments into the mantle at subduction zones. More than half of the earth s surface formed at a mid ocean ridge 2.

Almost all of the sea floor is covered by young sediments and sedimentary rocks derived either from erosion of continents or from marine biological processes. In tropical regions ocean islands tend to be surrounded by carbonate reefs. Smaller aquatic animals tend to live in the shallower regions and the larger animals live in the deeper regions generally along the continental shelves beneath the waves. Most of the volcanic eruptions and earthquakes occur along the mid ocean ridges.

The pacific is larger than the atlantic because it contains older oceanic floor c. Clastic sediments some quite coarse predominate on shelves and slopes. Which evidence supports the theory of seafloor. Deeper regions of the ocean floor tend to be younger b.

C the oldest oceanic crust is present only near trenches. Life may have originated at mid ocean ridges 3. Youngest oceanic crust is near the ridges. Except within a few kilometers of a ridge crest where the volcanic rock is still relatively young most parts of the sea floor are covered in sediments.