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25 kwi 2017 · A map showing the location of the Mariana Trench, the deepest oceanic trench known to mankind. What Is An Oceanic Trench? An oceanic trench is a long and narrow depression in the ocean floor.
Oceanic trenches are a feature of the Earth's distinctive plate tectonics. They mark the locations 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.
Deep-sea trench, any long, narrow, steep-sided depression in the ocean bottom in which occur the maximum oceanic depths, approximately 7,300 to more than 11,000 metres (24,000 to 36,000 feet). They typically form in locations where one tectonic plate subducts under another.
5 gru 2018 · Ocean trenches exist in all the world's oceans. They include the Philippine Trench, Tonga Trench, the South Sandwich Trench, the Eurasian Basin and Malloy Deep, the Diamantina Trench, the Puerto Rican Trench, and the Mariana.
29 lis 2023 · noun. area reaching from the sediment of a body of water to its surface. Ocean trenches are long, narrow depressions on the seafloor. These chasms are the deepest parts of the ocean—and some of the deepest natural spots on Earth.
Mariana Trench (Marianas Trench), deepest of the world’s deep-sea trenches. It stretches for more than 1,580 miles (2,540 km) with a mean width of 43 miles (69 km) and is part of the western Pacific system of oceanic trenches coinciding with subduction zones.
23 kwi 2023 · Oceanic trenches are long, narrow depressions or deep valleys that occur in the Earth’s oceanic crust. They are the deepest parts of the world’s oceans and are typically located in the areas where tectonic plates meet.
