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Results 21 - 30 of 115 for 'subduction' DLESE Reviewed Collection = DLESE Reviewed Collection <<  1 2 3 4 5 6 7  >>
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On the Pacific Northwest an oceanic tectonic plate (Juan de Fuca) is being pulled and driven (subducted) beneath the North American continental plate. Earthquakes generated along that fault may produce local tsunamis. Local tsunamis are those generated by earthquakes near the coast. This site provides links to external webpages describing the physics behind a tsunami. Resources featured in the links ... Full description.
Grade level: Middle (6-8), High (9-12)
Resource type: Case study, Photograph, Ref. material, Non-profit portal
Subject: Physical geography, Geology, Natural hazards, Physical oceanography
 
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BRIDGE Ocean Resources    Browse collection
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This collection of animations shows episodic tremor and slip (slow earthquakes) from a subducting plate with locked, slow slip, and no slip zones. The first two show wood blocks being pulled over sandpaper to simulate buildup and release of strain in locked and slow slip zones of a subducting tectonic plate, and to simulate episodic movement of a subducting tectonic plate. Graphs display time versus ... Full description.
Grade level: High (9-12), College (13-14)
Resource type: Video, Visualization - scientific
Subject: Geology, Geophysics
 
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DLESE Community Collection (DCC)    Browse collection
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Early evidence showing striking similarities between regions on opposite sides of vast oceans suggested that in Earth's distant past what are now separate continents may once have been connected. However, this evidence said nothing about how the continents could have moved to their present positions. This video shows how seafloor spreading creates new oceanic crust and how the crust is destroyed by ... Full description.
Grade level: Middle (6-8), High (9-12)
Resource type: Video
Subject: Geology
 
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DLESE Community Collection (DCC)    Browse collection
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This demonstration models the manner in which the convection currents in the mantle of the Earth cause movement of the plates. Convection currents in the mantle were thought, for many years, to be solely responsible for plate tectonic movements, with the movement taking rocks down at destructive margins and new rocks forming when plates spread. It is now thought likely that there are three possible ... Full description.
Grade level: Middle (6-8), High (9-12)
Resource type: Presentation / Demo
Subject: Structural geology
 
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Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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DLESE Community Collection (DCC)    Browse collection
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This resource provides general information about volcanoes. It illustrates the growth of a volcano, using Paricutin and Mt. St. Helens as examples of an active volcano and a lava dome. The terms extinct and dormant are also discussed. This site provides an explanation of why and how volcanoes form, zones of subduction, mid-ocean ridges, and hot spots. Deadly dangers associated with eruptions are discussed ... Full description.
Grade level: Middle (6-8)
Resource type: Tutorial
Subject: Geology, Natural hazards
 
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Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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DLESE Community Collection (DCC)    Browse collection
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This link takes you to the download page for Tanya Atwater's plate tectonics animations. Users must register before using the site, but it is free of charge. The site contains a series of QuickTime movies illustrates the movement and tectonic history of the Pacific-North America plate from 85 million years ago to present. The movies show the tectonic evolution of California, evolution of the San Andreas ... Full description.
Grade level: Middle (6-8), High (9-12), College (13-14), College (15-16), Graduate / Professional
Resource type: Illustration - scientific
Subject: Geology, Structural geology
 
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Cutting Edge    Browse collection
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This resource offers, among other things, a collection of journal entries from scientists reporting on their personal experiences of the volcanoes of Costa Rica. Reference sections include an introduction to volcanoes and Central America, the anatomy of subduction zones, the source of volatiles, sampling volatiles, recycling elements, and isotope geochemistry (geochemical tracers). There is a short ... Full description.
Grade level: General public
Resource type: Illustration - scientific, Map, Photograph, Video, Ref. material, Report
Subject: Geochemistry, Geology
 
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DLESE Community Collection (DCC)    Browse collection
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This resource explains the structure and composition of the landforms in the Northern Cascades. It gives the classification of the batholiths of the northern arc as well as describing and naming the arc-root plutons. The classification is based on the age of the structures and the site has information on both the original parts of the arc as well as the Mount Baker Volcano, which is thought to be ... Full description.
Grade level: High (9-12), College (13-14), College (15-16)
Resource type: Ref. material
Subject: Physical geography, Geology, Mineralogy or petrology
 
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Educational standards associated with this resource:
National Science Education Standards (NSES), National Geography Standards: Read
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In this demonstration, an egg is used as a model of the Earth. The egg is tapped gently, to create cracks in the shell. The pieces of shell are analogous to the Earth's plates, and the cracks are used to explain plate boundaries. Using the egg, the process of subduction as well as divergent, convergent, and transform boundaries are demonstrated. Activity sheets depicting a cross section of the Earth ... Full description.
Grade level: Primary (K-2), Intermediate (3-5)
Resource type: Classroom activity
Subject: Geology
 
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NASA Wavelength    Browse collection
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This visualization tool aids researchers and educators in understanding the tectonic activity of our planet for the past 1 million years. DTAM is a Geographical Information System (GIS) that displays a realistic synoptic view of present global tectonism by filling in the cartographic gap between conventional geological maps and plate reconstruction maps. This integrative technique provides a new and ... Full description.
Grade level: College (13-14), College (15-16), Graduate / Professional
Resource type: Map
Subject: Structural geology, Natural hazards
 
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DLESE Community Collection (DCC)    Browse collection
Results 21 - 30 of 115 for 'subduction' <<  1 2 3 4 5 6 7  >>