Definition For Trench Ocean Floor

Bathymetry the shape of the ocean floor is largely a result of a process called plate tectonics the outer rocky layer of the earth includes about a dozen large sections called tectonic plates that are arranged like a spherical jig saw puzzle floating on top of the earth s hot flowing mantle.

Definition for trench ocean floor.

A deep furrow or ditch. A long steep sided valley on the ocean floor. Trench definition is a long cut in the ground. Look it up now.

How to use trench in a sentence. Natural depression depression a sunken or depressed geological formation. A deep furrow or ditch. One used for military defense often with the excavated dirt thrown up in front.

Trench definition a long narrow excavation in the ground the earth from which is thrown up in front to serve as a shelter from enemy fire or attack. These oceanographic features are the deepest parts of the ocean floor. Trench a long steep sided depression in the ocean floor. Oceanic trenches typically extend 3 to 4 km 1 9 to 2 5 mi below the level of the surrounding oceanic floor.

Trenched trench ing trench es v tr. A long narrow ditch embanked with its own soil and used for concealment and protection in warfare. To dig or make a trench or trenches in land or an area for example. Plate tectonics and the ocean floor.

The deepest ocean depth to be sounded is in the challenger deep of the mariana trench. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries along which lithospheric plates move towards each other at rates that vary from a few millimeters to over ten centimeters per year. Some of the most familiar ocean trenches are the result of this type of convergent plate boundary the peru chile trench off the west coast of south america is formed by the oceanic crust of the nazca plate subducting beneath the continental crust of the south american plate. Ocean trench synonyms ocean trench pronunciation ocean trench translation english dictionary definition of ocean trench.