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 29
... thick 30-50 km thick Table 2.1 Continent Ocean 6 km / sec Characteristics of Oceanic Crust and Continental Crust 7 km / sec Oceanic Crust Continental Crust Mohorovičic discontinuity Average thickness 7 km Mantle 8 km / sec Seismic P ...
... thick 30-50 km thick Table 2.1 Continent Ocean 6 km / sec Characteristics of Oceanic Crust and Continental Crust 7 km / sec Oceanic Crust Continental Crust Mohorovičic discontinuity Average thickness 7 km Mantle 8 km / sec Seismic P ...
Page 77
... thick . Asthenosphere may not be present under continents . PLATES AND PLATE MOTION By the mid - 1960s the twin ... thick , while very old lithosphere far from the ridge crest may be as much as 100 kilometers thick . An average thickness ...
... thick . Asthenosphere may not be present under continents . PLATES AND PLATE MOTION By the mid - 1960s the twin ... thick , while very old lithosphere far from the ridge crest may be as much as 100 kilometers thick . An average thickness ...
Page 282
... thick continental ice sheets melted ( figure 19.33 ) . Another factor controlling soil thickness is the slope of the land surface ( figure 12.21B ) . Soils tend to be thick on flat land where erosion is slow and water can collect , and ...
... thick continental ice sheets melted ( figure 19.33 ) . Another factor controlling soil thickness is the slope of the land surface ( figure 12.21B ) . Soils tend to be thick on flat land where erosion is slow and water can collect , and ...
Contents
Chapter | 6 |
Box 8 | 8 |
Delivering Alaskan OilThe Environment vs the Economy | 10 |
Copyright | |
73 other sections not shown
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