oceanic trench -- Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.
It was also discovered that oceanic crust was destroyed at the oceanic trenches. Many of these trenches are found in the Pacific Ocean basin bordering continental crust.
oceanic trench) on the floor, the drop in gravity owing to absence of material (mass) in the trench space would cause a depression of the water at the surface.
The Pacific is ringed by many volcanoes and oceanic trenches
The largest landmass entirely within the Pacific Ocean is the island of New Guinea- the second largest island in the world.
 See also: Region, Area, Surface, Plate, Volcanic
|
