Subduction

1. Describe the rock cycle in your own words. The rock cycle is the process in which rocks are created, change their shapes, and eventually are destroyed. 2. Tell what subduction is, and describe what occurs along subduction zones. Subduction is what occurs when two tectonic plates collide and one plate slips under the other tectonic plate. When this happens the bottom tectonic plate fall into the mantle of the earth and be melted to make room for new tectonic plates. 3. Describe in your own words

Tokyo1, causing a devastating regional and global catastrophe. 1.1 Megathrust Earthquakes Megathrust earthquakes are defined as interplate earthquakes caused by one tectonic plate being forced under another in a subduction zone. During the lifetime of a subduction zone, two plates are constantly moving towards each other, and due to the great amount of friction, these plates get “stuck” in various areas 2 (fig 1). Due to the build-up of stress in these areas, the plates eventually unlock

Earthquakes and Subduction Zones Lab Amy Paret Mrs. Igo 9th Grade Periods 3 and 4 Even Date: 2/14/13 Background Research: This lab uses earthquake data to construct profiles of two convergent boundaries: the Tonga Trench and the Peru-Chile Trench. Where two tectonic plates converge, if one or both of the plates is an oceanic lithosphere, a subduction zone will form. When crust is formed at a mid-ocean ridge, it is hot and buoyant meaning it has a low density. As it spreads away from the ridge and

destruction that would be made to all the states, communities and residents. The fault line is less commonly known as the San Andreas which runs through California – Canada, where it is presumed that ‘The Big One” can be unleashed. The Cascadia Subduction zone is also runs from 700 miles from the pacific Northwest towards Canada. It can cause a lot of damage in the Pacific Northwest—Washington, Oregon and California.

convergence can occur between two ocean plates, two continental plates or an ocean and continental plates. Two of the features that can be found at a convergence boundary is a volcanic arc and a deep ocean trench. The Volcanic trench can be found over the subduction zone (Trujillo, pg 55). When an oceanic plate

3. 1960 and 2010 4. Thrust faulting on or near the subduction zone plate boundary between the Pacific and the North America plates. 5. A. Pacific, North America, and Eurasia plates, including Okhotsk Plate and Amur Plate. B. 83mm/yr 6. A. 9.1 B. 2004 Sumatra Andaman Earthquake (Indian Ocean Earthquake), 1964 Alaska Earthquake (Good Friday Earthquake), 1960 Great Children Earthquake 7. The volcanic arc is a 2200 km long zone of subduction of the Pacific plate, this has created a deep offshore

Tectonic Plates Cause of Earthquakes: The earth we live on, is made up of many different materials and layers. 2 of these layers, are the earths crust and mante. The earths crust is the surface of the earth; the outer shell. Just below this, lies the mantle. The mantle is made up of hot rocks, and together the crust and upper mantle, create the lithosphere. The lithosphere is made up of large plates, called tectonics plates, which is the earth’s crust divided. The plates are made of oceanic crust

wedge peridotite exhumation through upper crustal wedge 7 Role of serpentinization with exhumation 7 Subduction and exhumation rates 7 Rate of exhumation 7 Rate of subduction 8 Pressures of UHPM 8 Temperatures of UHPM 8 Relative densities of UHPM associated rocks 8 Further work 9 References 9 Introduction Ultra-high pressure metamorphism (UHPM) refers to a process of extensive subduction continued through continental collision. The complexity of these rocks occurrence at the surface leads

My inference is that California is at a very high risk from earthquakes and needs better earthquake safety for buildings and houses. This is because California is located to be a fault line named San Andreas.The type of plate boundary that this fault is on is a transform tectonic plate.This fault line is lined up all around the coast of California and is the sliding boundary between the Pacific Plate and the North American Plate.Although.According to an article named the San Andreas fault by David

This is a subduction in the northern part of the west side of the North American plate at the Cascadia subduction zone. It goes from the top of California to the bottom of Canada around Vancouver Island. There have been thoughts of a megathrust earthquake since the mega quake in Japan in 2011. As mentioned earlier, the Juan de Fuca plate is being pushed under the North American along the Cascadia fault. The theory is, when big parts of the plates lock, the stress is gathered until it breaks and a