As you go deeper below the ocean surface.
Is old ocean floor denser than new ocean floor.
Geolo gists have discovered that the amount by which the oceanic crust subsides is related to its age only if the crust is not overlain with and therefore.
The ocean floor has the same general character as the land areas of the world.
Older crust is denser than newer crust because it is cooler.
As the rock moves further it becomes colder and denser until it reaches an ocean trench or continues spreading.
A broad area covered with thick layers of mud and silt smooth nearly flat region of the ocean floor.
Due to the action of plate tectonics ocean crust is being formed and destroyed continuously.
So the ocean floor rarely lasts longer than 200 million years.
A long deep valley on the ocean floor old ocean floor sinks back into mantle through.
The new rock is dense but not as dense as the old rock that moves away from the ridge.
New oceanic crust is being produced in the pacific ocean due to a mid ocean ridge that runs along the ocean floor.
A younger oceanic crust is then formed causing the spread of the ocean floor.
The lack of weathering and erosion in most areas however allows geological processes to be seen more clearly on.
The crust overlies the solidified and uppermost layer of the mantle the crust and the solid mantle layer together constitute oceanic lithosphere.
Other articles where ocean floor is discussed.
Density than salt water.
As sea floor spreading continues newly created crust moves away from the mid ocean ridge crest and gradually becomes cooler thicker and denser with the result that it subsides.
In fact scientists have mapped more of the surface of the moon mars and venus than the surface of our ocean.
But researchers in the mediterranean sea have found a chunk of ocean floor that may be 340 million years old.
Oceanic makes up ocean thinner then continental denser than continental goes under continental in transform boundaries.
A history of ocean floor mapping and dating.
The oldest oceanic crust is about 200 million.
It will push away the old sea floor to make room for.
Mountains plains channels canyons exposed rocks and sediment covered areas.
Benson at new.
Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate it is composed of the upper oceanic crust with pillow lavas and a dike complex and the lower oceanic crust composed of troctolite gabbro and ultramafic cumulates.
Along ridges lava erupts and forms new ocean floor.
But the pacific ocean is not getting bigger.
It is also because it has had the weight of the ocean bearing down for longer.
On average continents are older than ocean basins.