How is a trench formed simple?

How is a trench formed simple?

Ocean trenches are natural tectonic plate boundaries between two crustal plates. When a continental plate converges with an oceanic plate a subduction zone forms. The heavier oceanic plate subducts beneath the lighter continental plate forming a trench.

Which ocean has no trench?

Pacific Ocean
Along passive plate margins there is no subduction zone (or trench) and the oceanic and continental crusts simply abut one another; there are thus no trenches or troughs along passive margins. [1] The Mariana Trench in the Pacific Ocean is the deepest place in the world ocean at -11,034 m water depth.

Where do deep sea trenches occur?

Deep-sea trenches generally lie seaward of and parallel to adjacent island arcs or mountain ranges of the continental margins. They are closely associated with and found in subduction zones—that is, locations where a lithospheric plate bearing oceanic crust slides down into the upper mantle under the force of gravity.

How does Philippine trench formed?

The trench formed from a collision between the Palawan and Zamboanga plates. This caused a change in geological processes going from a convergent zone to a subduction zone. The subduction zone is located west to east of the Philippine Islands. It hit the trench with a hypocenter depth of 34.9 km.

How do ocean floor features such as trenches and mid-ocean ridges form?

How are ocean trenches created? Two oceanic plates collide at a convergent boundary. The older, denser oceanic crust subducts into the mantle. The ocean floor of the majority of the Atlantic Ocean forms at a divergent boundary along a mid-ocean ridge resulting in sea floor spreading.

What is the definition for trench quizlet?

A block of barbed wire and wooden obstacles to stop any enemy soldier from advancing through the trench system. Trench Block. A break in the barbed wire to allow soldiers out into no man’s land.

How do trenches and ridges form?

Trench: very deep, elongated cavity bordering a continent or an island arc; it forms when one tectonic plate slides beneath another. Ridge: underwater mountain range that criss-crosses the oceans and is formed by rising magma in a zone where two plates are moving apart.

How was Philippine Fault formed?

The Philippine Fault System is a major inter-related system of geological faults throughout the whole of the Philippine Archipelago, primarily caused by tectonic forces compressing the Philippines into what geophysicists call the Philippine Mobile Belt.

What causes the formation of deep ocean trenches?

Deep ocean trenches are formed when a continental plate descends underneath an oceanic plate. This is commonly a process of plate tectonics. The Earth’s lithosphere is divided into 17 large tectonic plates and about 20 smaller plates, all of which are continuously moving with respect to each other.

What causes an ocean trench?

Ocean trenches are typically caused when an oceanic crustal plate slides under a lighter continental plate or another oceanic plate. It is believed to work by density.

What are oceanic trenches associated with?

The ocean-floor feature that is associated with trenches is a subduction zone. An oceanic trench is characterized by a narrow and very deep depression on the sea floor.

What are facts about the Mariana Trench?

Human tour in the Mariana Trench. Although many people will not trust this fact,it is absolutely true.

Giant creatures present here. One of the biggest and unresolved mysteries of the Mariana Trench is the claim to have giant creatures present here.

The rarest element present here.

It is the largest marine reserve in the world.