The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 292
... magma , but they also suggest what can happen when it is in contact with foreign solid materials . If a foreign ... magma , it can be converted by reaction to later stage minerals , just as if it had been formed earlier from the magma ...
... magma , but they also suggest what can happen when it is in contact with foreign solid materials . If a foreign ... magma , it can be converted by reaction to later stage minerals , just as if it had been formed earlier from the magma ...
Page 305
... magma approaches the Earth's surface under the ocean floor and along the crests of mid - oceanic ridges , as well as on the continents . Granitic magma , in con- trast , seems confined to continental crust . Continental margins , where ...
... magma approaches the Earth's surface under the ocean floor and along the crests of mid - oceanic ridges , as well as on the continents . Granitic magma , in con- trast , seems confined to continental crust . Continental margins , where ...
Page 306
... magma , the degree of change depending on the relative amount of country rock that the magma assimilates and on the compositional contrasts between magma and country rock . To dissolve rock requires heat from the magma ; to liberate ...
... magma , the degree of change depending on the relative amount of country rock that the magma assimilates and on the compositional contrasts between magma and country rock . To dissolve rock requires heat from the magma ; to liberate ...
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andesite Antarctic antibodies antigen atoms basalt basin bonds carbon cause cells centimetres central centre century chemical composition crystals cultural cycle cyclone earth east economic effect eruption evaporation feet feldspar feldspathoids flow freezing gabbro glaciers groundwater humidity Hungarian Hungary hunting hydrocarbons hydrogen hydrograph hydrologic hydrologic cycle hypnosis ice sheets icebergs Iceland ideology igneous rocks Illinois immunoglobulin immunological important increase India Indian industry intrusive kilometres king known lakes land lava layers lymphocytes mafic magma major melting ment metres miles millimetres minerals molecules mountain natural northern occur ocean parasitic percent philosophy plagioclase political population precipitation pressure produced rainfall range reaction region relatively result Reykjavík river runoff Samkhya snow social soil square kilometres structure surface temperature theory tion ture types United vapour Vedānta volcanic western wind zone