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 242
... basalt is called columnar structure or columnar jointing ( figure 10.30 ) . The columns can be explained by the way in which basalt contracts as it cools after solidifying . Basalt solidifies completely at temperatures below about 1200 ...
... basalt is called columnar structure or columnar jointing ( figure 10.30 ) . The columns can be explained by the way in which basalt contracts as it cools after solidifying . Basalt solidifies completely at temperatures below about 1200 ...
Page 244
... basalt ( figure 10.32 ) along the crests of mid - oceanic ridges ( regarded as diverging boundaries ) is impor- tant ... basalt , which , along with its intrusive counterpart , makes up virtually the entire oceanic crust ; ( 2 ) felsic ...
... basalt ( figure 10.32 ) along the crests of mid - oceanic ridges ( regarded as diverging boundaries ) is impor- tant ... basalt , which , along with its intrusive counterpart , makes up virtually the entire oceanic crust ; ( 2 ) felsic ...
Page 266
... Basalt Some geologists think that partial melting of basalt ( as op- posed to asthenosphere ) takes place . As the slab of oceanic lithosphere descends , the rock gets hotter ( figure 11.22 ) . Par- tial melting of basalt produces a ...
... Basalt Some geologists think that partial melting of basalt ( as op- posed to asthenosphere ) takes place . As the slab of oceanic lithosphere descends , the rock gets hotter ( figure 11.22 ) . Par- tial melting of basalt produces a ...
Contents
Chapter | 6 |
Box 8 | 8 |
Delivering Alaskan OilThe Environment vs the Economy | 10 |
Copyright | |
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Common terms and phrases
abyssal plains andesite asthenosphere atoms basalt basin beds beneath Benioff zone California Canyon caused chapter chemical weathering composition continental crust continental rise continental slope continents convection converging boundary cooling core craton crystal deep deposited depth dikes diverging boundary drilling earth's crust earth's surface earthquakes erosion eruptions feldspar folds fossils fracture zones gabbro geologists granite gravity heat flow horizontal hot mantle igneous rock isostatic kilometers lava flows lithosphere mafic magma magnetic anomalies mantle rock melting metamorphic rocks meteorites meters mid-oceanic ridge million mountain belt mountain ranges move normal faults occur oceanic crust oceanic trenches Photo plate boundaries plate motion plate tectonics plutonic pressure quake quartz reef regions ridge crest rift valley San Andreas fault sandstone sea floor sea level sediment sedimentary rock seismic waves shale shown in figure silicate soil solidified stress structure subducting plate temperature terrane thick turbidity currents U.S. Geological Survey uplift volcanoes