WebAnswer: Pretty generally the subductor is the oceanic (or what was oceanic when it was created) plate. The oceanic plate is newer than continental, some of which go almost all the way back to the beginning. It is denser and thinner; continental plate tends to float on top of oceanic when the two ... Web20 de set. de 2024 · Why are trenches formed? Ocean trenches are a result of tectonic activity, which describes the movement of the Earth’s lithosphere. At many convergent …
Volcanic Arc - an overview ScienceDirect Topics
WebHá 2 dias · "This location is not a pothole," a spokesperson for the City of Los Angeles told NBC Los Angeles. "It’s a service trench that relates to active, permitted work being … Web28 de mar. de 2008 · See answer (1) Copy. In geology, a trench is a linear and relatively narrow valley created at the boundaries of two colliding plates. The valley is created by … cryptography salting
Peru–Chile Trench - Wikipedia
Some trenches are created as a result of erosion by running water or by glaciers (which may have long since disappeared). Others, such as rift valleys or oceanic trenches, are created by geological movement of tectonic plates. Some oceanic trenches include the Mariana Trench and the Aleutian Trench. The … Ver mais A trench is a type of excavation or depression in the ground that is generally deeper than it is wide (as opposed to a wider gully, or ditch), and narrow compared with its length (as opposed to a simple hole or pit). Ver mais Trenches have often been dug for military purposes. In the pre-firearm era, they were mainly a type of hindrance to an attacker of a fortified location, such as the moat around a castle (this is technically called a ditch). An early example of this can be seen in the Ver mais Trenches that are deeper than about 1.5 m present safety risks arising from their steep walls and confined space. These risks are similar those from pits or any steep-walled … Ver mais In the civil engineering fields of construction and maintenance of infrastructure, trenches play a major role. They are used for installation of underground infrastructure or utilities (such as gas mains, water mains, communication lines and pipelines) … Ver mais Trenches are used for searching and excavating ancient ruins or to dig into strata of sedimented material to get a sideways (layered) view of the deposits – with a hope of being able to place found objects or materials in a chronological order. The advantage of this … Ver mais • Abyssal plain • Cut (earthmoving) • Cut and fill Ver mais • Trenching and Excavation (a NIOSH Safety and Health Topic, Centers for Disease Control and Prevention) • Trench Safety Awareness (a NIOSH Publication, Centers for Disease Control and Prevention) Ver mais Web18 de mar. de 2024 · Ocean trenches are formed by the buckling, folding, and spreading of the sea floor, and some of them can get extremely deep. In the case of abyssal trenches like the Mariana Trench, ocean trenches … WebDeep ocean trenches are formed when a continental plate descends underneath an oceanic plate. This is commonly a process of plate tectonics. The Earth’s lithosphere is … cryptography schools