Week 7 - Geophile.net
... Metamorphic rock masses: relict bedding, contact aureoles, metamorphic zones, index minerals, isograds Strike and dip, dip angle, dip direction Folds: anticlines, synclines, plunging folds, monoclines/homoclines, fold axis, core, limbs Faults: dip-slip, strike-slip, oblique-slip Unconformities: disc ...
... Metamorphic rock masses: relict bedding, contact aureoles, metamorphic zones, index minerals, isograds Strike and dip, dip angle, dip direction Folds: anticlines, synclines, plunging folds, monoclines/homoclines, fold axis, core, limbs Faults: dip-slip, strike-slip, oblique-slip Unconformities: disc ...
CITIES AT RISK
... EXAMPLE: THIRTY-FIVE CITIES AT HIGH RISK FROM EARTHQUAKES These cities have physical and socioeconomic factors known to increase risk (the chance of loss) to people, buildings, and infrastructure when a M7.0 or greater earthquake occurs ...
... EXAMPLE: THIRTY-FIVE CITIES AT HIGH RISK FROM EARTHQUAKES These cities have physical and socioeconomic factors known to increase risk (the chance of loss) to people, buildings, and infrastructure when a M7.0 or greater earthquake occurs ...
discussion in supporting maIn figure S1, we indeed observe
... PP, S and other later phases are substantially suppressed within 2-4Hz band because PP travels a longer path in the low velocity zone and S has larger intrinsic attenuation. PcP or ScP can contain considerable amounts of energy at the high-frequency band, but our data show consistent patterns of env ...
... PP, S and other later phases are substantially suppressed within 2-4Hz band because PP travels a longer path in the low velocity zone and S has larger intrinsic attenuation. PcP or ScP can contain considerable amounts of energy at the high-frequency band, but our data show consistent patterns of env ...
Volcanic eruptions - 2015-Sec3-Geog
... Location of major earthquakes • Along the Pacific Ring of Fire • Along the Mid-Atlantic Ridge • Stretching across from western Europe to ...
... Location of major earthquakes • Along the Pacific Ring of Fire • Along the Mid-Atlantic Ridge • Stretching across from western Europe to ...
Seismic Hazard Assessment of Southwestern Arabian Peninsula
... The epicentral distribution of both historical and instrumental earthquakes shows a general correlation with the regional geology and tectonics. Concentration of activity are seen where the spreading zone is intersected by NE transform faults. Most of the seismicity of this area is of swarm type and ...
... The epicentral distribution of both historical and instrumental earthquakes shows a general correlation with the regional geology and tectonics. Concentration of activity are seen where the spreading zone is intersected by NE transform faults. Most of the seismicity of this area is of swarm type and ...
Folding and Faulting
... mountains and valleys If the force is moderate only cracks may appear in the rocks. The displacement that occurs results in formation of faults. Such fractures are divided into Joints & Faults. A joint is a fracture where a rock seems to be joined together without any movement it may become a fault ...
... mountains and valleys If the force is moderate only cracks may appear in the rocks. The displacement that occurs results in formation of faults. Such fractures are divided into Joints & Faults. A joint is a fracture where a rock seems to be joined together without any movement it may become a fault ...
Normal / Reverse / Transverse
... Leads to fractures in the earth's crust Convection currents in mantle Faults force land up, down or sideways Down - normal fault (pulling apart) Up - reverse fault (pushing together) Sideways - Transform fault (sideways) Rock may slip very little each time (1-5 cm per year) In geological time (slipp ...
... Leads to fractures in the earth's crust Convection currents in mantle Faults force land up, down or sideways Down - normal fault (pulling apart) Up - reverse fault (pushing together) Sideways - Transform fault (sideways) Rock may slip very little each time (1-5 cm per year) In geological time (slipp ...
Active tectonics of Utah
... The earthquake cycle and the “characteristic earthquake” model Most active faults do not slip continuously, but show long periods of interseismic quiescence in between infrequent earthquakes. Active faults are usually strong enough to withstand a significant amount of loading imposed by tectonic st ...
... The earthquake cycle and the “characteristic earthquake” model Most active faults do not slip continuously, but show long periods of interseismic quiescence in between infrequent earthquakes. Active faults are usually strong enough to withstand a significant amount of loading imposed by tectonic st ...
lll
... happen no one can tell. It could be tomorrow or it could be 10 years from now. The San Francisco Bay area has a slightly lower potential for a great earthquake, as less than 100 years have passed since the great FBSUIRVBLF IPXFWFS moderate-sized, potentially damaging earthquakes could occur ...
... happen no one can tell. It could be tomorrow or it could be 10 years from now. The San Francisco Bay area has a slightly lower potential for a great earthquake, as less than 100 years have passed since the great FBSUIRVBLF IPXFWFS moderate-sized, potentially damaging earthquakes could occur ...
fission - cloudfront.net
... weight to something does. Remember the Ship analogy (An unloaded ship will float higher in the water than a fully ...
... weight to something does. Remember the Ship analogy (An unloaded ship will float higher in the water than a fully ...
Modified True/False - Indicate whether the
... a. the mass c. the rotating drum b. the spring d. the frame ____ 19. The stress which causes a material to twist is known as ____. a. Tension ...
... a. the mass c. the rotating drum b. the spring d. the frame ____ 19. The stress which causes a material to twist is known as ____. a. Tension ...
Date: Earth Science Reference Tables Practice 1. What kind of plate
... 4. Which feature is commonly formed at a plate boundary where oceanic crust converges with continental crust? (1) a mid-ocean ridge (2) an oceanic trench (3) a transform fault (4) new oceanic crust 5. Evidence of subduction exists at the boundary between (1) African and South American plates (2) Ind ...
... 4. Which feature is commonly formed at a plate boundary where oceanic crust converges with continental crust? (1) a mid-ocean ridge (2) an oceanic trench (3) a transform fault (4) new oceanic crust 5. Evidence of subduction exists at the boundary between (1) African and South American plates (2) Ind ...
Geology 120 Problem Set #3 Ch. 8-10 due 3/16 Metamorphic Rocks
... 7. You find a fossil bone fragment in your back yard – laboratory analysis reveals a C-14 concentrations that is 0.352 as great as modern plants. Calculate the age of your sample. ...
... 7. You find a fossil bone fragment in your back yard – laboratory analysis reveals a C-14 concentrations that is 0.352 as great as modern plants. Calculate the age of your sample. ...
Plate tectonics, earthquakes and voIcanoes - Beck-Shop
... When a crack or fault appears in the Earth’s crust, molten rock called magma, forces its way from the mantle up the fault and erupts on the surface of the Earth to form a volcano. When the magma reaches the surface of the Earth it is called lava. Besides lava, some volcanoes eject steam, ash, dust a ...
... When a crack or fault appears in the Earth’s crust, molten rock called magma, forces its way from the mantle up the fault and erupts on the surface of the Earth to form a volcano. When the magma reaches the surface of the Earth it is called lava. Besides lava, some volcanoes eject steam, ash, dust a ...
Science A-43
... overcome the friction, causing an earthquake These global-scale processes are seen on the ground as individual faults where the Earth ruptures and the two sides move past each other in earthquake-generating events Hypocenter – Actual location of the Earthquake deep underground Epicenter – The locati ...
... overcome the friction, causing an earthquake These global-scale processes are seen on the ground as individual faults where the Earth ruptures and the two sides move past each other in earthquake-generating events Hypocenter – Actual location of the Earthquake deep underground Epicenter – The locati ...
File - School
... – Earthquakes most commonly occur when two tectonic plates move suddenly against each other. – Rocks fracture underground at the earthquake focus and the Earth’s crust shakes as energy is released. – Waves spread from the epicentre, the point on the surface above the focus. – Earthquakes are measure ...
... – Earthquakes most commonly occur when two tectonic plates move suddenly against each other. – Rocks fracture underground at the earthquake focus and the Earth’s crust shakes as energy is released. – Waves spread from the epicentre, the point on the surface above the focus. – Earthquakes are measure ...
Gizmo earthquakes 1
... Earth’s interior in the form of body waves. There are two types of body waves: P-waves (primary waves) and S-waves (secondary waves). Scientists study earthquakes with the aid of an instrument called a seismograph. When seismic waves reach the seismograph, a graphical record, or seismogram, is produ ...
... Earth’s interior in the form of body waves. There are two types of body waves: P-waves (primary waves) and S-waves (secondary waves). Scientists study earthquakes with the aid of an instrument called a seismograph. When seismic waves reach the seismograph, a graphical record, or seismogram, is produ ...
Diastrophism
... Rock is strained beyond ability to remain intact; rock fractures; one side is displaced with respect to the other . • Fault plane: surface along which 2 sides move • Fault scarp: cliff formed along fault face ...
... Rock is strained beyond ability to remain intact; rock fractures; one side is displaced with respect to the other . • Fault plane: surface along which 2 sides move • Fault scarp: cliff formed along fault face ...
SIXTH GRADE EARTHQUAKES
... Explain to the students that they will observe the transfer of energy through different substances. The reactions they will record are caused by the differences between the substances and the amount of energy they will apply to the experiment. Stress that the experiments should be done SLOWLY and CA ...
... Explain to the students that they will observe the transfer of energy through different substances. The reactions they will record are caused by the differences between the substances and the amount of energy they will apply to the experiment. Stress that the experiments should be done SLOWLY and CA ...
Plate Tectonics
... 2. Click on the assignment that says “Tectonic Forces” 3. Click “Start Here” at the bottom of the screen and listen to the information. Then, close out that window. 4. Click a boundary from the box that says “Choose a type of boundary” at the top of the screen. 5. Click the white circles to see what ...
... 2. Click on the assignment that says “Tectonic Forces” 3. Click “Start Here” at the bottom of the screen and listen to the information. Then, close out that window. 4. Click a boundary from the box that says “Choose a type of boundary” at the top of the screen. 5. Click the white circles to see what ...
Seismic Waves
... through the Earth. These waves can cause the ground to move forward, backward, up, down, and even to ripple. Seismic Waves are generated at the __SAME___ time but move in different ways, and at ...
... through the Earth. These waves can cause the ground to move forward, backward, up, down, and even to ripple. Seismic Waves are generated at the __SAME___ time but move in different ways, and at ...
P waves
... to their unstretched shape. Elastic rebound occurs when more stress is applied to rock than the rock can withstand. During elastic rebound, energy is released. Some of this energy travels as seismic waves. These seismic waves can cause an earthquake. ...
... to their unstretched shape. Elastic rebound occurs when more stress is applied to rock than the rock can withstand. During elastic rebound, energy is released. Some of this energy travels as seismic waves. These seismic waves can cause an earthquake. ...
lesson-2-explore-page-115-shaping-earths-surface
... One place where a fault can exist is at a boundary plate. Tectonic plates do not continually slide past each other along faults. But, because of the convection currents beneath the tectonic plates, forces build up along faults. Eventually, these forces become so great that the rocks on either si ...
... One place where a fault can exist is at a boundary plate. Tectonic plates do not continually slide past each other along faults. But, because of the convection currents beneath the tectonic plates, forces build up along faults. Eventually, these forces become so great that the rocks on either si ...
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.