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The ocean basins are the result of tectonic forces and processes. All of the ocean basins were formed from volcanic rock that was released from fissures located at the mid-oceanic ridges. The oldest rocks found in these basins are approximately 200 million years old. This is a lot younger than the oldest continental rocks which have ages greater than 4 billion years. The reason for this discrepancy is simple. Tectonic processes destroy old oceanic rocks! Oceanic rock is returned to the Earth's mantlewhen oceanic crust is subducted. Many of these subduction zones occur at the continental marginswhere oceanic crust meets continental crust. Subduction also creates the ocean's deep trenches.
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Trenches are the deepest parts of the ocean floor which of the earth's four oceans hs the deepest trenches?
The Pacific Ocean has the deepest trenches.
What features are found on the ocean floor?
That it is a topgraphical and the features are a ocean floor.
What are elongated troughs on the ocean floor called?
Elongated troughs on the ocean floor are called oceanic trenches. These features are formed by the subduction of one tectonic plate beneath another, creating deep depressions in the seabed. Oceanic trenches are some of the deepest parts of the Earth's crust.
What is the deepest known portion of the ocean floor is called?
Challenger deep.
What forms features on the ocean?
What causes ocean floor features to form
What is the deepest known portion of the ocean floor is called the?
The deepest known portion of the ocean floor is called the Challenger Deep, located in the Mariana Trench in the western Pacific Ocean. It reaches a depth of about 36,000 feet (10,972 meters).
What are the deepest part of the ocean floor?
The deepest parts of the ocean floor are caused by plate tectonic subduction and occur where the sea floor sinks back into the mantle in a subduction zone. These areas are called deep sea trenches and the Challenger Deep in the Mariana Trench in the Pacific is the deepest known point in Earth's oceans.
What is the name of canyons that form the deepest part of the ocean floor?
The Marianas trench .
What are Isolated volcanic peaks on the ocean floor known as?
Isolated volcanic peaks on the ocean floor are known as seamounts. The deepest parts of the ocean are long, narrow features known as deep ocean trenches.
What is responsible for the formation of ocean-floor features?
Plate tectonics and (river) erosion are responsible for the formation of ocean-floor features.
What is responsible for the formation of ocean floor features?
Plate tectonics and (river) erosion are responsible for the formation of ocean-floor features.
What is 362011 feet the deepest known portion of the ocean floor is called?
Mariana trench
