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25 kwi 2017 · An oceanic trench is a long and narrow depression in the ocean floor. These trenches are considered the deepest part of the ocean floor, occurring at the boundary between convergent plates and lithospheric plates.
Oceanic trenches are prominent, long, narrow topographic depressions of the ocean floor. They are typically 50 to 100 kilometers (30 to 60 mi) wide and 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor, but can be thousands of kilometers in length.
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.
The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width.
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.
Ocean trenches are steep depressions exceeding 6,000 meters in depth, where old ocean crust from one tectonic plate is pushed beneath another plate. Trenches make up the world's hadal zone.
11 maj 2021 · Mariana Trench: Deep ocean trenches occur where Earth's tectonic plates meet. Submarine dives to deepest-known shipwreck. World's deepest octopus captured on camera. Adventurer reaches deepest...
