The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 2005 |
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Page 235
... magma but rather were accidentally torn from the country rock by the magma as it rose to the surface . When this has occurred , these phenocrysts are referred to as xenocrysts , while the aggregates can be termed xenoliths . The size of ...
... magma but rather were accidentally torn from the country rock by the magma as it rose to the surface . When this has occurred , these phenocrysts are referred to as xenocrysts , while the aggregates can be termed xenoliths . The size of ...
Page 240
... magma Figure 113 : Collision of a continental plate with an oceanic plate . The oceanic plate is shown subducting below the continental crust . Melting of the crust or of the mantle above the subducting plate occurs only at a depth of ...
... magma Figure 113 : Collision of a continental plate with an oceanic plate . The oceanic plate is shown subducting below the continental crust . Melting of the crust or of the mantle above the subducting plate occurs only at a depth of ...
Page 242
... magma that is crystallizing pyroxene and labradorite . If the magma tears from its wall miner- als , say , olivine and anorthite , which are formed earlier than pyroxene and labradorite in the series , they will react with the liquid to ...
... magma that is crystallizing pyroxene and labradorite . If the magma tears from its wall miner- als , say , olivine and anorthite , which are formed earlier than pyroxene and labradorite in the series , they will react with the liquid to ...
Common terms and phrases
albite amphiboles ancient aragonite areas atoms basalt bivalves body calcite calcium called carbonate central centre century cephalopods chemical clay minerals colour common composition contain crust crystals ctenidia cult cultural deities deposits developed dolomite Earth economic eggs electron evaporite example existence facies feldspar Figure garnet gastropods goddess gods grains Hittite human igneous rocks important industrial kaolinite king known layers limestone magma magnetic major mantle cavity marine material mental metamorphic rocks metaphysics Mexican Mexico City mica Michelangelo microscope millimetres Milton mimicry mind Mineralogy modern Molière Mongolia Mongols Moscow myth nature object occur ocean olivine organic originally oxide percent period philosophers physical plagioclase political population pressure produced properties pyroxene quartz reaction region religion religious reprinted result sandstones sedimentary rocks sediments shell silicate smectite snails society species structure Sumerian surface temperature temple tetrahedrons texture tion typically United urban volcanic