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Intro to Plate Tectonic Theory ... Whatever drives the movement, plate tectonic activity takes place at four types of boundaries: divergent boundaries, where new crust is formed; convergent boundaries, where crust is consumed; collisional boundaries, where two land masses collide;
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www.pbs.org/wgbh/aso/tryit/tectonics/intro.html
www.pbs.org/wgbh/aso/tryit/tectonics/intro.html
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Plate Tectonic Theory: Plate Boundaries and Interplate Relationships ... The drawing above is a cross section of the earth showing the components that lie within plate tectonic theory. The cross section should really be curved to correspond to the earth's curvature, but it has been straightened out here.
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csmres.jmu.edu/geollab/vageol/vahist/plates.html
csmres.jmu.edu/geollab/vageol/vahist/plates.html
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Plate tectonic theory is a relatively new idea, having been formulated in the early 1960s. Plate tectonics states that the Earth's surface, both land and water, is divided up into several pieces like giant jigsaw puzzle pieces.
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library.thinkquest.org/C005921/Earth/eartPlat.htm
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Plate Tectonic Theory and Dynamics ... 1. PRE-PLATE TECTONICS HYPOTHESES ... ; Distance (x) to any magnetic reversal is the width of the oceanic crust produced during that time interval (t); therefore x/t = average plate velocity; use radiometric dating to date the reversals. Orientation of transform faults gives direction.
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www.csam.montclair.edu/earth/eesweb/gorring/geos112/PTt...
www.csam.montclair.edu/earth/eesweb/gorring/geos112/PTtheory.html
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From these simple observations the theory of PLATE TECTONICS developed. ... According to the plate tectonic model, the surface of the Earth consists of a series of relatively thin, but rigid, plates which are in constant motion. The surface layer of each plate is composed of oceanic crust, continental crust or a combination...
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www.hartrao.ac.za/geodesy/tectonics.html
www.hartrao.ac.za/geodesy/tectonics.html
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The tarpaper shack on the Menlo Park campus where USGS scientists developed the results that would help support the theory of plate tectonics.
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www.usgs.gov/125/articles/plate_tectonics.html
www.usgs.gov/125/articles/plate_tectonics.html
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Online version of a U.S. Geological Survey brochure on the topic of plate tectonics. The site seems appropriate for high-schoolers and above (and advanced middle schoolers). Covers the historical development of plate tectonics as a theory, how we see it in action today, and how tectonics affects peopl ... 303-202-4700;
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pubs.usgs.gov/publications/text/dynamic.html
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Earthquake occurrence in different plate tectonic settings: ... There are three main plate tectonic environments: extensional, transform, and compressional. Plate boundaries in different localities are subject to different inter-plate stresses, producing these three types of earthquakes.
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www.seismo.unr.edu/ftp/pub/louie/class/100/plate-tecton...
www.seismo.unr.edu/ftp/pub/louie/class/100/plate-tectonics.html
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