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 239
... andesite is the rock most associated with composite volcanoes . If the tempera- ture of an andesite lava is considerably above the temperature at which it would be completely solidified , the relatively nonvis- cous fluid flows easily ...
... andesite is the rock most associated with composite volcanoes . If the tempera- ture of an andesite lava is considerably above the temperature at which it would be completely solidified , the relatively nonvis- cous fluid flows easily ...
Page 244
... andesite , a moderately dark rock . Andesite contains about equal amounts of ferromagnesian minerals and sodium- and calcium - rich feldspars . Extrusive rocks are characteristically fine - grained . Por- phyritic rock contains some ...
... andesite , a moderately dark rock . Andesite contains about equal amounts of ferromagnesian minerals and sodium- and calcium - rich feldspars . Extrusive rocks are characteristically fine - grained . Por- phyritic rock contains some ...
Page 245
... andesite 234 basalt 234 bomb 236 caldera 236 cinder cone 238 circum - Pacific belt 239 columnar structure ( columnar jointing ) 242 composite volcano ( stratovolcano ) 238 crater 236 extrusive rock 228 felsic rock 232 fine - grained ...
... andesite 234 basalt 234 bomb 236 caldera 236 cinder cone 238 circum - Pacific belt 239 columnar structure ( columnar jointing ) 242 composite volcano ( stratovolcano ) 238 crater 236 extrusive rock 228 felsic rock 232 fine - grained ...
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