chapter 6 earthquakes
... ground when rock (plates) move suddenly and release energy. • aftershock – a release in energy after an earthquake ...
... ground when rock (plates) move suddenly and release energy. • aftershock – a release in energy after an earthquake ...
Dr. Stephen Marshak
... Abstract: The present-day topographic character of the Rocky Mountains and Colorado Plateau provinces contrasts markedly with that of the Midcontinent province (Interior Plains and plateaus), even though all these areas are underlain by similar cratonic-platform crust. Lack of dramatic topography le ...
... Abstract: The present-day topographic character of the Rocky Mountains and Colorado Plateau provinces contrasts markedly with that of the Midcontinent province (Interior Plains and plateaus), even though all these areas are underlain by similar cratonic-platform crust. Lack of dramatic topography le ...
constructive__destructive_forces ppt
... size of the seismic waves - low ---> high (1-9) -each # is 10x stronger - humans cannot feel a quake below 2 - 6 or more = major quake - Measures magnitude ...
... size of the seismic waves - low ---> high (1-9) -each # is 10x stronger - humans cannot feel a quake below 2 - 6 or more = major quake - Measures magnitude ...
Presentation - WAIS Workshop
... P-wave tomography along the seismic transect across West Antarctica Shows very slow and hot upper mantle down to ~ 400 km in Marie Byrd Land Consistent with a plume head, suggests high heat flow Faster, colder continental lithosphere beneath the Whitmore Block Slow anomaly beneath the Bentley Trench ...
... P-wave tomography along the seismic transect across West Antarctica Shows very slow and hot upper mantle down to ~ 400 km in Marie Byrd Land Consistent with a plume head, suggests high heat flow Faster, colder continental lithosphere beneath the Whitmore Block Slow anomaly beneath the Bentley Trench ...
continental drift and plate tectonics
... PLATES Lithospheric plates and plate tectonics • where are the spreading continents going? • the answer was important in initiating the rock plate concept • rock sections or plates which diverge from spreading zones move towards or converge on subduction zones • Rock plates • ocean basin and contine ...
... PLATES Lithospheric plates and plate tectonics • where are the spreading continents going? • the answer was important in initiating the rock plate concept • rock sections or plates which diverge from spreading zones move towards or converge on subduction zones • Rock plates • ocean basin and contine ...
Geologic Framework of Western Oregon and Washington
... Northwest must be educated on the dangers of this seismically active region and how to effectively prepare for a large scale earthquake which is likely to occur in the next 100-200 years. ...
... Northwest must be educated on the dangers of this seismically active region and how to effectively prepare for a large scale earthquake which is likely to occur in the next 100-200 years. ...
The New Zealand convergent tectonics system has
... SW as the MLB faults converge to the more singular Alpine fault (AF) and the deep continuum compression of the central SI8. Obvious Benioff zone seismicity tapers to near zero (at depth) near Culverden, but uppermost mantle eq’s further SW may indicate earlier subducted, possibly less hydrated, thic ...
... SW as the MLB faults converge to the more singular Alpine fault (AF) and the deep continuum compression of the central SI8. Obvious Benioff zone seismicity tapers to near zero (at depth) near Culverden, but uppermost mantle eq’s further SW may indicate earlier subducted, possibly less hydrated, thic ...
PowerPoint - teachearthscience.org
... For example, the rock granite commonly contains the three minerals: •quartz •feldspar •biotite ...
... For example, the rock granite commonly contains the three minerals: •quartz •feldspar •biotite ...
Rocks Rock - teachearthscience.org
... For example, the rock granite commonly contains the three minerals: •quartz •feldspar •biotite ...
... For example, the rock granite commonly contains the three minerals: •quartz •feldspar •biotite ...
Three distinct types of hotspots in the Earth`s mantle
... 17], Sleep’s estimate [6] of buoyancy £ux and its reliability, and shear wave velocity anomalies at 500 km depth for the tomographic model of Ritsema et al. ([25], see also [26]). We propose that only the nine hotspots which meet at least three out of the ¢ve possible criteria are potentially due to ...
... 17], Sleep’s estimate [6] of buoyancy £ux and its reliability, and shear wave velocity anomalies at 500 km depth for the tomographic model of Ritsema et al. ([25], see also [26]). We propose that only the nine hotspots which meet at least three out of the ¢ve possible criteria are potentially due to ...
How does a volcano erupt? - Germantown School District
... Earth’s crust when molten material, or magma, reaches the surface. – Magma: Molten mixture of rock-forming substances, gases, and water from the mantle. (beneath the surface) – Lava: Magma that reaches Earth’s surface. (on the surface) ...
... Earth’s crust when molten material, or magma, reaches the surface. – Magma: Molten mixture of rock-forming substances, gases, and water from the mantle. (beneath the surface) – Lava: Magma that reaches Earth’s surface. (on the surface) ...
Continental Drift
... B)Evidence of glaciers found in tropical areas, show that the continents were once covered in ice and could have moved from being closer to the poles to their actual position ...
... B)Evidence of glaciers found in tropical areas, show that the continents were once covered in ice and could have moved from being closer to the poles to their actual position ...
Volcanic landforms
... Volcanic eruptions can develop into three different types of volcanic mountains, depending on the nature of the volcanic material. A shield cone is a volcanic mountain that is built almost entirely of lava flow. The slopes of a shield cone volcano are very gentle and rounded like a warrior's shield. ...
... Volcanic eruptions can develop into three different types of volcanic mountains, depending on the nature of the volcanic material. A shield cone is a volcanic mountain that is built almost entirely of lava flow. The slopes of a shield cone volcano are very gentle and rounded like a warrior's shield. ...
Morphology_of_Ocean_Basins
... Accretion of sedimentary and magmatic material from down-going plate; all piled up against the margin as mélange.The sediments include pelagic deposits and magmatic rocks of ocean-lithosphere origin Gravitaty controlled sedimentation (turbidites) in the trenches Deformation of sediments (folding ...
... Accretion of sedimentary and magmatic material from down-going plate; all piled up against the margin as mélange.The sediments include pelagic deposits and magmatic rocks of ocean-lithosphere origin Gravitaty controlled sedimentation (turbidites) in the trenches Deformation of sediments (folding ...
Reading Science!
... 3 Deep under the Earth’s crust the temperature is so high that it is hot enough to melt rocks. This molten rock called magma will eventually cool and harden forming rock within the crust. Occasionally, magma will find its way through the crust through volcanic action. When this happens the molten ro ...
... 3 Deep under the Earth’s crust the temperature is so high that it is hot enough to melt rocks. This molten rock called magma will eventually cool and harden forming rock within the crust. Occasionally, magma will find its way through the crust through volcanic action. When this happens the molten ro ...
Directions: Answer the following questions in your notebook
... age02.cfm 1. How does crystallization of magma occur and what type of rock is produced? 2. How are sedimentary rocks formed? 3. How are metamorphic rocks formed? 4. Explain how plate tectonics play a role in the creation of metamorphic rocks. 5. What igneous rock is changed into the metamorphic rock ...
... age02.cfm 1. How does crystallization of magma occur and what type of rock is produced? 2. How are sedimentary rocks formed? 3. How are metamorphic rocks formed? 4. Explain how plate tectonics play a role in the creation of metamorphic rocks. 5. What igneous rock is changed into the metamorphic rock ...
Topic 11
... Sedimentary rocks are formed from sediments, usually that have been deposited in water. Clastic sedimentary rocks [“clastic” means broken, fragmented] - formed from particles of weathered rock - sediments can usually be seen (the rock looks and feels “dirty”) - clastic sediments can be lithified ( ...
... Sedimentary rocks are formed from sediments, usually that have been deposited in water. Clastic sedimentary rocks [“clastic” means broken, fragmented] - formed from particles of weathered rock - sediments can usually be seen (the rock looks and feels “dirty”) - clastic sediments can be lithified ( ...
Essentials of Geology Earthquakes and Earth`s
... within Earth where faulting begins is the focus, or hypocenter The point directly above the focus on the surface is the epicenter ...
... within Earth where faulting begins is the focus, or hypocenter The point directly above the focus on the surface is the epicenter ...
Chapter 2. Composition of the continental crust
... 1. Total mass = 0.6% silicate earth 2. Main reservoir for K-U-Th (heat) and mineral resources 3. Primary archive of the earth history ...
... 1. Total mass = 0.6% silicate earth 2. Main reservoir for K-U-Th (heat) and mineral resources 3. Primary archive of the earth history ...
Spreading Continents Kick-Started Plate Tectonics Plate tectonics
... Earthbyte Research Group – School of Geosciences, The University of Sydney – Sydney NSW 2006, Australia. ...
... Earthbyte Research Group – School of Geosciences, The University of Sydney – Sydney NSW 2006, Australia. ...
... greater creep strength of olivine than of crustal minerals makes oceanic lithosphere strong in the depth range where continental lithosphere appears to be weakest (1). What then is the role of the mantle lithosphere beneath continents? Is it cut by faults, or narrow shear zones, that separate effect ...
Igneous Rocks and Intrusive Igneous Activity
... Overview of Igneous Rocks Form when minerals crystallize ...
... Overview of Igneous Rocks Form when minerals crystallize ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.