Physical Geology: Earth RevealedCoverage of plate tectonics is moved to the beginning of the book. The text is also used as the official Annenberg CPB distributed telecourse for physical geology.The beautiful new art program and interactive writing style will grab students' attention and further their interest in the subject. |
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Page 30
... Depth Mantle Xenoliths - A Peek at. 100 200 Velocity of P waves ( km / sec ) 6 8 10 Crust Depth 300 ( km ) Upper mantle 400 500 600 700 Continent Ocean Crust 70 km Mantle 125 km ? Low - velocity zone Asthenosphere 200 km 2 400 km ...
... Depth Mantle Xenoliths - A Peek at. 100 200 Velocity of P waves ( km / sec ) 6 8 10 Crust Depth 300 ( km ) Upper mantle 400 500 600 700 Continent Ocean Crust 70 km Mantle 125 km ? Low - velocity zone Asthenosphere 200 km 2 400 km ...
Page 42
... depth into the earth . Part ( A ) shows both the old and new estimates of the earth's internal temperature . 7 2.340 ICELAND GIBBS FRAGTURE ZONE 102 PEAKE DEEP OCEANOGRAPHER. Depth ( km ) 1000 2000 Temperature ( degrees C ) 1000 2000 ...
... depth into the earth . Part ( A ) shows both the old and new estimates of the earth's internal temperature . 7 2.340 ICELAND GIBBS FRAGTURE ZONE 102 PEAKE DEEP OCEANOGRAPHER. Depth ( km ) 1000 2000 Temperature ( degrees C ) 1000 2000 ...
Page 98
... depths . Box figure 1A shows mantle velocities at a depth of 100 kilometers . Red areas show low velocities ( probably caused by hot rock ) in generally expected positions - along the crest of the mid - oceanic ridge and beneath hot ...
... depths . Box figure 1A shows mantle velocities at a depth of 100 kilometers . Red areas show low velocities ( probably caused by hot rock ) in generally expected positions - along the crest of the mid - oceanic ridge and beneath hot ...
Contents
Chapter | 6 |
Box 8 | 8 |
Delivering Alaskan OilThe Environment vs the Economy | 10 |
Copyright | |
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Common terms and phrases
active America anomalies atoms basalt becomes beds beneath block boundary break building California called caused chapter chemical composition continental continental crust continents cooling core crystal currents deep deposited depth described determine direction earth's magnetic field earth's surface earthquakes erosion eruptions evidence example explain fault field figure flow folds forces geologic geologists granite gravity heat horizontal igneous increase indicate island kilometers land lava layers less lines lithosphere lower magma magnetic mantle margin mass material melting metamorphic meters mid-oceanic ridge million minerals motion mountain belt move movement normal North occur oceanic crust original Photo plains plate tectonics poles position present pressure processes quake quartz range regions relatively ridge rise sea floor sediment sedimentary rock seismic seismic refraction shown slope soil South stress structure subduction surface temperature theory thick Trench United usually volcanoes waves weathering zone