12.2 - Features of Plate Tectonics
... The _____________ of an earthquake is the location inside Earth where the earthquake starts. The __________________ is the point on Earth’s surface directly above the focus. Earthquakes can happen at various depths, depending on the type of tectonic plates involved. The amount of damage done by an e ...
... The _____________ of an earthquake is the location inside Earth where the earthquake starts. The __________________ is the point on Earth’s surface directly above the focus. Earthquakes can happen at various depths, depending on the type of tectonic plates involved. The amount of damage done by an e ...
Chapter 8
... Fault-Block Mountains • These mountains are thought to have formed along faults. • Rocks on one side are forced upward while rocks on the other side sink. ...
... Fault-Block Mountains • These mountains are thought to have formed along faults. • Rocks on one side are forced upward while rocks on the other side sink. ...
The Reykjanes Peninsula Oblique Rift, a zone of crustal extension
... The structure of the plate boundaries in Iceland is relatively complex. Several of the plate boundary segments are oblique to the over-all plate velocity vector between the North America and Eurasia Plates. Oblique and immature plate boundaries are frequently characterized by complicated fault patte ...
... The structure of the plate boundaries in Iceland is relatively complex. Several of the plate boundary segments are oblique to the over-all plate velocity vector between the North America and Eurasia Plates. Oblique and immature plate boundaries are frequently characterized by complicated fault patte ...
Elastic Rebound Theory The Earthquake Cycle
... faults and earthquakes in the upper crust plates are STUCK together in the top 20 km, except when an earthquake allows sudden relative motion ...
... faults and earthquakes in the upper crust plates are STUCK together in the top 20 km, except when an earthquake allows sudden relative motion ...
AQA A Revision Guide – The Restless Earth
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
568KB - NZQA
... Submarine Earthquakes A tsunami can be generated when a thrust fault associated with a convergent plate boundary moves abruptly, resulting in water displacement, owing to the vertical movement of the plate. There are many known faults off the Kaikoura coast, and visible on the map; some of these are ...
... Submarine Earthquakes A tsunami can be generated when a thrust fault associated with a convergent plate boundary moves abruptly, resulting in water displacement, owing to the vertical movement of the plate. There are many known faults off the Kaikoura coast, and visible on the map; some of these are ...
Earthquake Potential of Major Faults Offshore Southern California
... and structures. These faults are modestly well known, though they are often not considered in tectonic models and seismic hazard assessments because their Holocene activity and slip rates are unknown. For example, the seismic hazard mapping prepared by the USGS and CDMG omitted two of the largest an ...
... and structures. These faults are modestly well known, though they are often not considered in tectonic models and seismic hazard assessments because their Holocene activity and slip rates are unknown. For example, the seismic hazard mapping prepared by the USGS and CDMG omitted two of the largest an ...
Lecture 10
... The friction between the plates can be so great that very large strains can build up before they are periodically relieved by large earthquakes Earthquakes at transform faults tend to occur at shallow depths and form fairly straight linear patterns ...
... The friction between the plates can be so great that very large strains can build up before they are periodically relieved by large earthquakes Earthquakes at transform faults tend to occur at shallow depths and form fairly straight linear patterns ...
Earthquake
... occur in sparsely populated areas or because they are small earthquakes that release relatively small amounts of energy. However, where urban areas are located in regions of high seismicity, damaging earthquakes are expectable, if not predictable, events. The major effects of earthquakes are ground ...
... occur in sparsely populated areas or because they are small earthquakes that release relatively small amounts of energy. However, where urban areas are located in regions of high seismicity, damaging earthquakes are expectable, if not predictable, events. The major effects of earthquakes are ground ...
Subduction Zone—Plate Interaction
... Asperity—literally “roughness. It is an area on a fault that is stuck or locked. A type of surface roughness appearing along the interface of two faults. Physics the elastically compressed region of contact between two surfaces caused by the normal force Asthenosphere—the ductile part of the earth j ...
... Asperity—literally “roughness. It is an area on a fault that is stuck or locked. A type of surface roughness appearing along the interface of two faults. Physics the elastically compressed region of contact between two surfaces caused by the normal force Asthenosphere—the ductile part of the earth j ...
are posted - Atmospheric and Oceanic Sciences
... either weaker than average easterly winds, or actual westerlies in response to an unusually strong west-to-east pressure gradient. 29. The typical winds that occur over the tropical waters of the Pacific Ocean are easterly (winds from the east). Discuss the consequences of these winds shifting to we ...
... either weaker than average easterly winds, or actual westerlies in response to an unusually strong west-to-east pressure gradient. 29. The typical winds that occur over the tropical waters of the Pacific Ocean are easterly (winds from the east). Discuss the consequences of these winds shifting to we ...
Notes on Earthquakes and Earth`s interior - earth
... 1. The Crust- is a solid layer, which consists of continental and oceanic crust. This layer is relatively thin compared to the other layers. a) Continental crust is made of Granite, which is a low-density igneous rock and has an average thickness of 20-40 km. b) Oceanic crust is made of Basalt, whic ...
... 1. The Crust- is a solid layer, which consists of continental and oceanic crust. This layer is relatively thin compared to the other layers. a) Continental crust is made of Granite, which is a low-density igneous rock and has an average thickness of 20-40 km. b) Oceanic crust is made of Basalt, whic ...
Natural Disaster Completed Notes
... What is the name of that scale? Saffir-Simpson Hurricane Scale ...
... What is the name of that scale? Saffir-Simpson Hurricane Scale ...
Elastic rebound acti..
... Step 1. Build a fence across a fault. Step 2. The plates move past each other at a given rate. The fault is locked, so the crust deforms elsatically. The fence is bent in relation to the elastic deformation of the crust. Step 3. The strain from the fault exceeds the strength of the fault and the fau ...
... Step 1. Build a fence across a fault. Step 2. The plates move past each other at a given rate. The fault is locked, so the crust deforms elsatically. The fence is bent in relation to the elastic deformation of the crust. Step 3. The strain from the fault exceeds the strength of the fault and the fau ...
GEOL_15_mid_term_I_s..
... can we tell? What is thermal convection? How might thermal convection transfer energy from the mantle to the plates? How might thermal convection transfer energy within the mantle? What happens when plates get older and colder? What are the observations that led to plate tectonic theory? What are ...
... can we tell? What is thermal convection? How might thermal convection transfer energy from the mantle to the plates? How might thermal convection transfer energy within the mantle? What happens when plates get older and colder? What are the observations that led to plate tectonic theory? What are ...
Magma Supply Vs Magma Plumbing
... Primary Wave: P wave is a compressional (or longitudinal) wave in which rock (particles) vibrates back and forth parallel to the direction of wave propagation. P-waves are the first arriving wave and have high frequencies but their amplitude tends not to be very large ...
... Primary Wave: P wave is a compressional (or longitudinal) wave in which rock (particles) vibrates back and forth parallel to the direction of wave propagation. P-waves are the first arriving wave and have high frequencies but their amplitude tends not to be very large ...
World at risk 4 - SLC Geog A Level Blog
... past each other laterally • The two plates get locked together in places and pressure builds up. As with destructive boundaries, this causes the plates to jerk past each other (or to crack forming fault lines) releasing the energy as an earthquake • For example, the Pacific plate is moving past the ...
... past each other laterally • The two plates get locked together in places and pressure builds up. As with destructive boundaries, this causes the plates to jerk past each other (or to crack forming fault lines) releasing the energy as an earthquake • For example, the Pacific plate is moving past the ...
An____________is a movement of Earth’s lithosphere shift, releasing stored energy.
... • Folds form where rocks are squeezed together but do not break. • Rocks tend to fold rather than break when they are under high temperature or pressure. Stress can squeeze rock together, producing folds in layers of rock. ...
... • Folds form where rocks are squeezed together but do not break. • Rocks tend to fold rather than break when they are under high temperature or pressure. Stress can squeeze rock together, producing folds in layers of rock. ...
Test Review: Geosphere Part 1: Lithosphere, Earthquakes
... made of hot ______silica rocks ___________. You could also call this magma. 4. The outer core has (more/less) pressure then the inner core. Therefore, the outer core is (liquid/solid) and the inner core is (liquid/solid). The core is made up of ____iron_________ & _________nickel________. 5. The mov ...
... made of hot ______silica rocks ___________. You could also call this magma. 4. The outer core has (more/less) pressure then the inner core. Therefore, the outer core is (liquid/solid) and the inner core is (liquid/solid). The core is made up of ____iron_________ & _________nickel________. 5. The mov ...
How are seismic waves generated-Elastic rebound theory Describe
... This accumulation of stress causes the rocks that make up the crust to deform elastically. This is very similar to what happens when you squash or stretch a spring and causes a form of energy to be stored in the rocks of the crust technically described as elastic potential energy. When this stress g ...
... This accumulation of stress causes the rocks that make up the crust to deform elastically. This is very similar to what happens when you squash or stretch a spring and causes a form of energy to be stored in the rocks of the crust technically described as elastic potential energy. When this stress g ...
Magnitude 7.1 SOUTHERN ALASKA
... earthquakes greater than magnitude 4 since 2001. On the cross section below, intermediate and deep earthquakes within the Pacific Plate illustrate its angle of subduction beneath the North American Plate. ...
... earthquakes greater than magnitude 4 since 2001. On the cross section below, intermediate and deep earthquakes within the Pacific Plate illustrate its angle of subduction beneath the North American Plate. ...
Plate tectonics - 2 Subduction Zones Transform Faults
... Stress exceeds strength of fault Fault suddenly slips in an earthquake Plate boundary moves Fault locks again ...
... Stress exceeds strength of fault Fault suddenly slips in an earthquake Plate boundary moves Fault locks again ...
Earthquake
An earthquake (also known as a quake, tremor or temblor) is the perceptible shaking of the surface of the Earth, which can be violent enough to destroy major buildings and kill thousands of people. The severity of the shaking can range from barely felt to violent enough to toss people around. Earthquakes have destroyed whole cities. They result from the sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter magnitude scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly almost imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. The most recent large earthquake of magnitude 9.0 or larger was a 9.0 magnitude earthquake in Japan in 2011 (as of March 2014), and it was the largest Japanese earthquake since records began. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.