Question

what features would you expect to find at a convergent plate boundary? Be specific and discuss earthquakes, the age of the ocean floor, volcanoes, and topographic features. describe any convergent boundaries present on the west coast of north america.

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Answer 1

Convergent plate boundaries are areas where lithospheric plates are moving towards each other. The plate crashes that happen in these zones can deliver tremors, volcanic movement, and crustal misshapening.

Convergent Plate Boundary - Oceanic and Continental Plates

At the point when mainland and maritime plates impact, the more slender and increasingly thick maritime plate is superseded by the thicker and less thick mainland plate. The maritime plate is constrained down into the mantle in a procedure known as "subduction." As the maritime plate dives, it is constrained into higher temperature situations. At a profundity of around 100 miles (160 km), materials in the subducting plate start to move toward their dissolving temperatures and a procedure of incomplete liquefying starts.

This fractional dissolving produces magma chambers over the subducting maritime plate. These magma loads are less thick than the encompassing mantle materials and are light. The light magma chambers start a moderate climb through the overlying materials, softening and cracking their direction upwards. The size and profundity of these magma loads can be dictated by mapping the seismic tremor movement around them. In the event that a magma chamber ascends to the surface without hardening, the magma will get through as a volcanic emission.

The Washington-Oregon coastline of the United States is a case of this sort of convergent plate limit. Here the Juan de Fuca maritime plate is subducting underneath the westbound moving North American mainland plate. The Cascade Mountain Range is a line of volcanoes over the softening maritime plate. The Andes Mountain Range of western South America is another case of a convergent limit between a maritime and mainland plate. Here the Nazca Plate is subducting underneath the South American plate.

Impacts of a convergent limit between a maritime and mainland plate include: a zone of seismic tremor movement that is shallow along the landmass edge yet extends underneath the mainland; now and again a sea channel quickly seaward of the landmass; a line of volcanic ejections two or three hundred miles inland from the shoreline; annihilation of maritime lithosphere.

Convergent Plate Boundary - Oceanic

At the point when a convergent limit happens between two maritime plates, one of those plates will subduct underneath the other. Ordinarily the more seasoned plate will subduct due to its higher thickness. The subducting plate is warmed as it is constrained further into the mantle, and at a profundity of around 100 miles (150 km) the plate starts to dissolve. Magma loads are delivered because of this liquefying, and the magma is lower in thickness than the encompassing stone material. It starts climbing by liquefying and breaking its way through the overlying stone material. Magma chambers that arrive at the surface achievement to shape a volcanic ejection cone. In the beginning periods of this sort of limit, the cones will be far below the sea surface however later develop to be higher than ocean level. This delivers an island chain. With proceeded with advancement the islands become bigger, combine, and a lengthen landmass is made.

Japan, the Aleutian Islands, and the Eastern Caribbean islands of Martinique, St. Lucia, and St. Vincent and the Grenadines are instances of islands shaped through this kind of plate limit.

Impacts that are found at this kind of plate limit include: a zone of logically more profound seismic tremors; a maritime channel; a chain of volcanic islands; the pulverization of maritime lithosphere.

Convergent Plate Boundary - Continental

First it is mind boggling and second, it is inadequately comprehended when contrasted with different kinds of plate boundaries. Right now convergent limit, an amazing impact happens. The two thick mainland plates impact, and them two have a thickness that is a lot of lower than the mantle, which forestalls subduction (there might be a limited quantity of subduction, or the heavier lithosphere beneath the mainland outside layer may break liberated from the hull and subduct).

Parts of outside or landmass edge dregs may be trapped in the impact zone between the mainlands, framing an exceptionally disfigured melange of rock. The extraordinary pressure can likewise cause broad collapsing and blaming of rocks inside the two impacting plates. This distortion can expand many miles into the plate inside.

The Himalaya Mountain Range is the best dynamic case of this sort of plate limit. Visit the Interactive Plate Boundary Map to investigate satellite pictures of the Himalaya Range where the Indian and Eurasian plates are at present in crash. The Appalachian Mountain Range is an old case of this impact type and is likewise set apart on the guide.

Impacts found at a convergent limit between mainland plates include: serious collapsing and blaming; a wide collapsed mountain run; shallow tremor movement; shortening and thickening of the plates inside the crash zone.

a) A quake is the shaking of the outside of the Earth coming about because of an abrupt arrival of vitality in the Earth's lithosphere that makes seismic waves. Earthquakes can go in size from those that are powerless to the point that they can't be felt to those vicious enough to drive items (and individuals) into the air, and unleash annihilation across whole urban areas. The seismicity, or seismic action, of a territory is the recurrence, type, and size of earthquakes experienced over some undefined time frame. The word tremor is additionally utilized for non-quake seismic thundering.

At the Earth's surface, earthquakes show themselves by shaking and uprooting or disturbing the ground. At the point when the focal point of a huge seismic tremor is found seaward, the seabed might be uprooted adequately to cause a tidal wave. Earthquakes can likewise trigger avalanches and every so often, volcanic movement.

In its most broad sense, the word quake is utilized to portray any seismic occasion—regardless of whether normal or brought about by people—that creates seismic waves. Earthquakes are caused for the most part by crack of topographical blames yet in addition by different occasions, for example, volcanic movement, avalanches, mine impacts, and atomic tests. A tremor's place of introductory crack is called its concentration or hypocenter. The focal point is the point at ground level straightforwardly over the hypocenter.

c) A spring of gushing lava is a burst in the outside of a planetary-mass item, for example, Earth, that permits hot magma, volcanic debris, and gases to escape from a magma chamber underneath the surface.

Earth's volcanoes happen in light of the fact that its outside is broken into 17 significant, inflexible structural plates that drift on a more smoking, milder layer in its mantle. In this way, on Earth, volcanoes are commonly discovered where structural plates are separating or uniting, and most are discovered submerged. For instance, a mid-maritime edge, for example, the Mid-Atlantic Ridge, has the volcanoes brought about by different structural plates while the Pacific Ring of Fire has volcanoes brought about by the convergent structural plates present over there. Volcanoes can likewise frame where there is extending and diminishing of the outside layer's plates, e.g., in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande Rift in North America. Volcanism away from plate boundaries has additionally been clarified as mantle tufts. These alleged "hotspots", for instance Hawaii, are proposed to emerge from upwelling diapirs with magma from the center mantle limit, 3,000 km somewhere down in the Earth. Volcanoes are typically not made where two structural plates slide past each other.

d) Topography is the investigation of the shape and features of land surfaces. The topography of a zone could allude to the surface shapes and features themselves, or a portrayal (particularly their delineation in maps).

Topography is a field of geoscience and planetary science and is worried about nearby detail as a rule, including help as well as characteristic and counterfeit features, and even neighborhood history and culture. This significance is less normal in the United States, where topographic maps with height forms have made "topography" synonymous with help.

A goal of topography is to decide the situation of any component or all the more for the most part any point as far as both a flat organize framework, for example, scope, longitude, and elevation. Distinguishing (naming) features, and perceiving run of the mill landform designs are likewise part of topographic features.

b) Age of sea depths tells about the occasions when there was a reversibility of posts happen in past and as we move further away from the mid maritime edge the time of sea floor increments with the thickness being expanded and residue aggregation over the sea floor being expanded.

2) Farallon plate subducting beneath the North American plate near Canada is the ocean - Continent convergent boundary along the west coast of North America.