plate tectonic study guide
... Tell about the age of the floor. What is the mid-ocean ridge? Longest chain of underwater Mountains (in the world) in the Atlantic ocean --the ocean floor at the mid-ocean ridge produces new oceanic crust and pushes the old crust farther away for the mid-ocean ridge as the crust moves farther from t ...
... Tell about the age of the floor. What is the mid-ocean ridge? Longest chain of underwater Mountains (in the world) in the Atlantic ocean --the ocean floor at the mid-ocean ridge produces new oceanic crust and pushes the old crust farther away for the mid-ocean ridge as the crust moves farther from t ...
Background Information
... Convergent – Convergent plate boundaries form when two tectonic plates come together and collide with each other. These boundaries can have different results depending on whether they form in continental crust or oceanic crust. ...
... Convergent – Convergent plate boundaries form when two tectonic plates come together and collide with each other. These boundaries can have different results depending on whether they form in continental crust or oceanic crust. ...
Full crustal seismic imaging in northeast Greenland
... interpretations are used to constrain the seismic velocity for the deep crustal structural imaging and interpretation. These studies are incorporated twice in the processing/ interpretation workflow, first during PSDM processing to sharpen imaging of deep intra-basement structures and second during ...
... interpretations are used to constrain the seismic velocity for the deep crustal structural imaging and interpretation. These studies are incorporated twice in the processing/ interpretation workflow, first during PSDM processing to sharpen imaging of deep intra-basement structures and second during ...
PDF File - Tulane University
... body of the Earth. Thus they can give us information about the properties of rocks near the surface, but not about the properties of the Earth deep in the interior. Because seismic waves reflect from and refract through boundaries where there is sudden change in the physical properties of the rock, ...
... body of the Earth. Thus they can give us information about the properties of rocks near the surface, but not about the properties of the Earth deep in the interior. Because seismic waves reflect from and refract through boundaries where there is sudden change in the physical properties of the rock, ...
AuSIS Module: QuakeCaster
... earthquakes do not behave in a regular manner. They have tried to compare the hypotheses with their results and although they are similar there is still variation between events. This can be related to the behavior of earthquakes in the real world and to how difficult it is to predict earthquakes. T ...
... earthquakes do not behave in a regular manner. They have tried to compare the hypotheses with their results and although they are similar there is still variation between events. This can be related to the behavior of earthquakes in the real world and to how difficult it is to predict earthquakes. T ...
File
... Because energy from earthquakes is transferred by waves, scientists can measure the waves to learn about earthquakes, and about the interior of the Earth through which the waves travel. Scientists hope that learning more will give them tools to predict earthquakes and save lives. Seismologists detec ...
... Because energy from earthquakes is transferred by waves, scientists can measure the waves to learn about earthquakes, and about the interior of the Earth through which the waves travel. Scientists hope that learning more will give them tools to predict earthquakes and save lives. Seismologists detec ...
Plate generation in a simple model of lithosphere–mantle flow with
... the coupling of basic convective flow Žcalled poloidal motion, which involves upwellings, downwellings and divergentrconvergent motion at the surface. with a spatially variable viscosity w9,12,13,19,20x. ŽTo a large extent, the fluid model of the mantle– lithosphere system is the simplest possible p ...
... the coupling of basic convective flow Žcalled poloidal motion, which involves upwellings, downwellings and divergentrconvergent motion at the surface. with a spatially variable viscosity w9,12,13,19,20x. ŽTo a large extent, the fluid model of the mantle– lithosphere system is the simplest possible p ...
Lec-06 - nptel
... concrete are preferred as they tend to move with the shaking ground (unreinforced concrete and heavy masonry tend to move independently and in opposition to the shaking, battering one another until the structure collapses) Critical facilities such as nuclear power plants and dams should be built on ...
... concrete are preferred as they tend to move with the shaking ground (unreinforced concrete and heavy masonry tend to move independently and in opposition to the shaking, battering one another until the structure collapses) Critical facilities such as nuclear power plants and dams should be built on ...
Restless Earth - DesignWorlds for Learning, Inc.
... point beneath Earth’s surface where rock that is under stress breaks, triggering an earthquake. The point on the surface directly above the focus is called the epicenter. What kinds of waves have you observed? How do waves move in water? Earthquakes travel like the waves you guys were talking about. ...
... point beneath Earth’s surface where rock that is under stress breaks, triggering an earthquake. The point on the surface directly above the focus is called the epicenter. What kinds of waves have you observed? How do waves move in water? Earthquakes travel like the waves you guys were talking about. ...
Subduction tectonics: Earthquake cycle and long
... Let’s quickly review the three end-member types of upper-plate deformation and their causes…. 1. Upper plate shortening (mountain building) - Possible causes: Rapid trenchward motion of upper plate, overrides subducting plate, associated with shallow subduction, deformation far inboard from trench. ...
... Let’s quickly review the three end-member types of upper-plate deformation and their causes…. 1. Upper plate shortening (mountain building) - Possible causes: Rapid trenchward motion of upper plate, overrides subducting plate, associated with shallow subduction, deformation far inboard from trench. ...
Chapter 9 web
... Wegener’s _______ ________ hypothesis stated that the continents had once been joined to form a single supercontinent. • Wegener proposed that the supercontinent, ____________, began to break apart ___ million years ago and form the present landmasses. ...
... Wegener’s _______ ________ hypothesis stated that the continents had once been joined to form a single supercontinent. • Wegener proposed that the supercontinent, ____________, began to break apart ___ million years ago and form the present landmasses. ...
Presentation - Copernicus.org
... Answer – During the well-established (Windley, Condie) 2.45-2.2Ga gap in zircon dates for orogenic granitoids and greenstone belts. Details -- In the 2.8-2.45Ga run-up to this Post-Archaean Hiatus, MOR crests deepened, finally lowering sea-level by >3km during the Hiatus. The ~10km erosion of craton ...
... Answer – During the well-established (Windley, Condie) 2.45-2.2Ga gap in zircon dates for orogenic granitoids and greenstone belts. Details -- In the 2.8-2.45Ga run-up to this Post-Archaean Hiatus, MOR crests deepened, finally lowering sea-level by >3km during the Hiatus. The ~10km erosion of craton ...
MANTLE CONVECTION, PLATE TECTONICS, AND VOLCANISM
... melt distribution. We limit melt production to a maximum depth of 50 km, which results in a time-averaged melt production for a nominal Earth model (C150) consistent with Earth’s present-day melt production of ∼20 km3 yr−1 (McKenzie & Bickle 1988). Our choice of maximum depth affects the total melt ...
... melt distribution. We limit melt production to a maximum depth of 50 km, which results in a time-averaged melt production for a nominal Earth model (C150) consistent with Earth’s present-day melt production of ∼20 km3 yr−1 (McKenzie & Bickle 1988). Our choice of maximum depth affects the total melt ...
Interactive comment on “Energy of plate tectonics calculation and
... nature of energy or force that drives plate tectonics. Some tectonic plates do not have slabs, yet they move. What drives these slab-less plates? Basic mechanics suggests that under the pull of slabs, midocean ridges must level off with time, but they do not. Midocean ridges are rising instead. What ...
... nature of energy or force that drives plate tectonics. Some tectonic plates do not have slabs, yet they move. What drives these slab-less plates? Basic mechanics suggests that under the pull of slabs, midocean ridges must level off with time, but they do not. Midocean ridges are rising instead. What ...
"postorogenie" magmatism
... Postorogenie magmatic suites are common to many orogens, in many eases apparently just postdating the cessation of deformation. They differ from preceding orogenie suites in that they have higher temperatures, more primitive isotopic signatures, and bimodal na· tures, and thus are compositionally si ...
... Postorogenie magmatic suites are common to many orogens, in many eases apparently just postdating the cessation of deformation. They differ from preceding orogenie suites in that they have higher temperatures, more primitive isotopic signatures, and bimodal na· tures, and thus are compositionally si ...
Continents change position over time.
... like pieces in a puzzle. Were these continents joined at one time? In the late 1800s, German scientist Alfred Wegener (VAY-guh-nuhr) began studying this question. In 1912, he proposed a hypothesis known as continental drift. According to Wegener’s hypothesis, Earth’s continents were once joined in a ...
... like pieces in a puzzle. Were these continents joined at one time? In the late 1800s, German scientist Alfred Wegener (VAY-guh-nuhr) began studying this question. In 1912, he proposed a hypothesis known as continental drift. According to Wegener’s hypothesis, Earth’s continents were once joined in a ...
ENVI 21 Life in the Ocean
... Richest, most productive parts of ocean Some parts exposed during times of low sea level and eroded by rivers and glaciers now are submarine canyons Varies in width from 1 km (Pacific coast of S Am) to 750+ km (Arctic coast of Siberia) Ends at shelf break, usually at 120-200 m but up to 400+ m depth ...
... Richest, most productive parts of ocean Some parts exposed during times of low sea level and eroded by rivers and glaciers now are submarine canyons Varies in width from 1 km (Pacific coast of S Am) to 750+ km (Arctic coast of Siberia) Ends at shelf break, usually at 120-200 m but up to 400+ m depth ...
IM_chapter8 Earthquakes and Interior
... 1812, 7.5 to 8, occurred in the middle of the North American Plate far from any plate boundaries. The faulting in this region appears to be the result of compressional forces that occur as the plate absorbs strain from westward motion and convergence with the Pacific Plate. However, this fault zone ...
... 1812, 7.5 to 8, occurred in the middle of the North American Plate far from any plate boundaries. The faulting in this region appears to be the result of compressional forces that occur as the plate absorbs strain from westward motion and convergence with the Pacific Plate. However, this fault zone ...
Ch 3 ppt
... When two continental plates collide, each is relatively buoyant and similar in density. Minor subduction may occur but typically continental crust is deformed, pushed together and uplifted forming thick crustal mountain ranges. Example: India and Asia – Himalayan Mountains ...
... When two continental plates collide, each is relatively buoyant and similar in density. Minor subduction may occur but typically continental crust is deformed, pushed together and uplifted forming thick crustal mountain ranges. Example: India and Asia – Himalayan Mountains ...
Sea-floor spreading and deformation processes in the South Atlantic
... islands and in providing a super-deep mantle frame of reference (the hotspot reference frame) that was independent of plate motions at the surface. Accumulating scientific evidence over half a decade and recent GPS-derived absolute plate motions suggest that both the mantle plume frame of reference ...
... islands and in providing a super-deep mantle frame of reference (the hotspot reference frame) that was independent of plate motions at the surface. Accumulating scientific evidence over half a decade and recent GPS-derived absolute plate motions suggest that both the mantle plume frame of reference ...
Plate and Pangaea Powerpoint
... The convection currents are what move the crust. Asthenosphere is the upper mantle to about 700km deep. The Asthenosphere is a hot semi-solid material (plasticity). The Asthenosphere glides over the lower mantle. This is what causes the crust to move. ...
... The convection currents are what move the crust. Asthenosphere is the upper mantle to about 700km deep. The Asthenosphere is a hot semi-solid material (plasticity). The Asthenosphere glides over the lower mantle. This is what causes the crust to move. ...
Plate Tectonics
... 2. When two plates collide, one plate may go underneath (subduction) the other creating huge valleys or oceanic trenches. These trenches are as deep as 35,000 feet below the ocean surface, are long and narrow, and run parallel to and near the shoreline of continents. They are associated with and pa ...
... 2. When two plates collide, one plate may go underneath (subduction) the other creating huge valleys or oceanic trenches. These trenches are as deep as 35,000 feet below the ocean surface, are long and narrow, and run parallel to and near the shoreline of continents. They are associated with and pa ...
Rising of the lowest place on Earth due to Dead Sea water
... Inset provides enlarged view of the interval analyzed in this study, with circles indicating satellite acquisition times. 1982]. For example, Cavalié et al. [2007] performed an Interferometric Synthetic Aperture Radar (InSAR) time series analysis of the Lake Mead area, and inferred a maximum subside ...
... Inset provides enlarged view of the interval analyzed in this study, with circles indicating satellite acquisition times. 1982]. For example, Cavalié et al. [2007] performed an Interferometric Synthetic Aperture Radar (InSAR) time series analysis of the Lake Mead area, and inferred a maximum subside ...
Evidence for plate tectonics
... Early Case for Continental Drift • Puzzle-piece fit of coastlines of Africa and South America has long been known • In early 1900s, Alfred Wegener noted South America, Africa, India, Antarctica, and Australia have almost identical late Paleozoic rocks and fossils – Glossopteris (plant), Lystrosauru ...
... Early Case for Continental Drift • Puzzle-piece fit of coastlines of Africa and South America has long been known • In early 1900s, Alfred Wegener noted South America, Africa, India, Antarctica, and Australia have almost identical late Paleozoic rocks and fossils – Glossopteris (plant), Lystrosauru ...
Pd Study Guide
... Longest chain of underwater volcanic mountains in the world found in the earth’s oceans -Mid-Ocean Ridge forms at divergent plate boundary movement -new oceanic crust forms at the Mid-Ocean Ridge (New sea floor or ocean basin) ...
... Longest chain of underwater volcanic mountains in the world found in the earth’s oceans -Mid-Ocean Ridge forms at divergent plate boundary movement -new oceanic crust forms at the Mid-Ocean Ridge (New sea floor or ocean basin) ...
Post-glacial rebound
Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.