13 Feb

Paleomagnetic Rotations and Continental Deformation (Nato

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How Deep Does Magma Form in subduction zones? This explains why large mountain ranges are in correlation to their oceanic ridges. [6] The main problem with this theory is that it generates too much heat, but this can be dealt with by several methods. The wave energy at the time of the flowing lava was strong enough to curl up the edges of the lava before it cooled leaving these unique giant tooth-like structures. Crust is destroyed when the edge of one tectonic plate is forced underneath another.

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13 Feb

Popular Science July 2008

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Courtesy Public domain Today is the birthday of Alfred Lothar Wegener, the scientist who first developed the theory of continental drift. Choose a plate tectonic topic or controversy that particularly interests you. ( If you have any difficulty coming up with a topic speak to Atwater or Scott or #.) Use Georef to find some articles in the professional literature about your topic and browse through them, then pick an aspect to write about (small enough so that you can get deeply into it).

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13 Feb

The Ross Orogen of the Transantarctic Mountains

Edmund Stump

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Choose an option to locate/access this article: Check if you have access through your login credentials or your institution. In plate tectonics, these deep-rooted fault zones are interpreted as "subduction zones" where plates descend into the mantle. If we were talking about how to expand the Drake equation one of the things that you proposed is whether or not a planet had plate tectonics. Figure 7.15 a: Regional metamorphism beneath a mountain range related to continent-continent collision (typical geothermal gradient). (Example: Himalayan Range) [SE] At an oceanic spreading ridge, recently formed oceanic crust of gabbro and basalt is slowly moving away from the plate boundary (Figure 7.16).

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13 Feb

Popular Science 1940 November

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This is liquid rocks, they're super heated. And the outside, the one percent of the earths' total volume is the earths' crust. Deformation occurs at the margins of plates by three basic types of motion: horizontal extension, horizontal slipping, and horizontal compression. Geodetic surveys across �rift� zones in Iceland and East Africa have failed to detect any consistent and systematic widening as postulated by plate tectonics.

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12 Feb

Popular Science Monthly, September 1930

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In 1976, an earthquake in Tangshan, China killed an astounding 750,000 people. Between two adjacent sections of the rift valley, the crust is moving along shear fault lines at 2 to 10 cm/yr. producing shallow earthquakes. It is the core of the evolutionary interpretation of the fossil record holding that all things continue as they were from the beginning of the world in fulfillment of II Peter 3:3-6. Pacific Plate Plates move as a result of this kind of movement in hot magma.

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12 Feb

Focus on Earth Science (Science Explore, California Edition)

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When the magma erupts at the surface a volcanic island arc is formed on the non-subducting plate. As early as 1858, a French scientist named Antonio Snider-Pellegrini began to speculate that all the continents had at one time been joined into a supercontinent he called Pangea. Finally it will be valuable to consider Mike’s questions, which for the most part are evidently proposed as objections to the expanding earth hypothesis. “If the earth is expanding, should not all of the ocean basins be getting larger?

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12 Feb

Metamorphic Geology (Special topics in geology)

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Earth's crust not only moves on top of the hot molten layer but is broken into pieces that move relative to each other. He concluded that the Flood of Noah had caused subsequent horizontal movement of the supercontinent causing it to break, thus forming the tectonic plates. Faulted sedimentary monoclines showing substantial and opposing dips typically flanked the uplifts. Once the ocean basin was completely subducted this wedge would be squeezed between the two colliding continents along the suture zone.

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12 Feb

Major Impacts and Plate Tectonics

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The CD or Email-Delivered Packet contains: Detailed lesson plans, bellwork and journal suggestions, labs and worksheets, test & quizzes, active learning suggestions including four Foldables�, and many Team Game suggestions you can run off on colored paper. The basis of his modeling work is a geological map of the world, first published by an international commission in 1990, which differentiates crustal rock worldwide on the basis of paleomagnetically determined age.

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12 Feb

Prentice Hall Science Explorer: Earth Science Unit 2

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The “Lost City” represents a location on Earth that validates the sea floor spreading theory. The subducting oceanic crust melts as it penetrates deeper into the asthenosphere, and rising molten material and gases from the melted crust may contribute to the formation of volcanic arcs such as those found along the Pacific Rim. When individual paleomagnetic pole positions, rather than averaged curves, are plotted on world maps, the scatter is huge, often wider than the Atlantic.

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12 Feb

Popular Science Magazine September 1987

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The much improved data from the WWSSN instruments allowed seismologists to map precisely the zones of earthquake concentration world wide. The trenches were presumed to have been filled with pelagic and hemipelagic sediments from the ocean plate, but instead are filled by turbidites from the land. The Archean Eon (3.8-2.5 Ga, 03:44-10:40 h) Only a tiny sliver of Archean rock crops out in Colorado's northwest corner. Your paper should be about 1800 -2000 words long.

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