WebNov 9, 2024 · Continental slope deposits are not common in the rock record. The most notable type of continental slope deposits are contourites [ 41 ]. Contourites form on the slope between the continental shelf and the deep ocean floor. Deep-water ocean currents deposit sediment into smooth drifts of various architectures, sometimes interwoven with …
How Does Earth
WebThey have gradually moved over the course of hundreds of millions of years—alternately combining into supercontinents and pulling apart in a process known as continental drift. The supercontinent of Pangaea formed as the landmasses gradually combined roughly between 300 and 100 mya. Deposition of sediments at the mouth of submarine canyons may form enormous fan-shaped accumulations called submarine fans on both the continental slope and continental rise. Alluvial or sedimentary fans are shallow cone-shaped reliefs at the base of the continental slope that merge together, forming the continental rise. Erosional submarine canyons slope downward and lead to alluvial fan valleys with increasing depth. It is in this zone that sediment is deposited, forming th… o o in inglese
Geology Chapter 13 Diagram Quizlet
WebSep 27, 2024 · Continental crust is always much more buoyant than oceanic crust, and oceanic crust will always subduct. Ocean trenches formed by this continental-oceanic boundary are asymmetrical. On a trench’s outer slope … WebThe continental slope extends from the seaward edge of the continental shelf into the deep ocean (15,000 feet) at an average angle of 4 to 5 degrees. It is thought that the sediments … Webcontinental rise Submarine canyons found on the continental slope and rise have been created ________. -because of a plate plunging into the mantle -by rivers during the ice age -by faulting -none of these none of these The gently sloping submerged surface extending from the shoreline toward the ocean is termed the ________. continental shelf oo in french