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 58
... major structural trends on continents appear to lie along the hypothetical exten- sion of fracture zones onto the continents . Figure 3.18 Fracture zones , which run perpendicular to the. 58 Chapter 3 Geologic Activity on the Ridge Fracture ...
... major structural trends on continents appear to lie along the hypothetical exten- sion of fracture zones onto the continents . Figure 3.18 Fracture zones , which run perpendicular to the. 58 Chapter 3 Geologic Activity on the Ridge Fracture ...
Page 59
... Fracture zones , which run perpendicular to the ridge crest and separate the ridge into segments , are often marked by steep cliffs up to 3 or 4 kilometers high . Ridge crest Fracture zone Figure 3.19 Shallow - focus earthquakes ( shown ...
... Fracture zones , which run perpendicular to the ridge crest and separate the ridge into segments , are often marked by steep cliffs up to 3 or 4 kilometers high . Ridge crest Fracture zone Figure 3.19 Shallow - focus earthquakes ( shown ...
Page 80
... fracture zones . The mid - oceanic ridge is offset along fracture zones ( fig- ure 3.18 ) . Conceivably , the mid - oceanic ridge was once contin- uous across a fracture zone but has been offset by strike - slip fault motion along the ...
... fracture zones . The mid - oceanic ridge is offset along fracture zones ( fig- ure 3.18 ) . Conceivably , the mid - oceanic ridge was once contin- uous across a fracture zone but has been offset by strike - slip fault motion along the ...
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