The New Encyclopaedia Britannica: Macropaedia (19 v.)Encyclopaedia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 120
... rocks of different mineral composition and origin . Some rocks are of magmatic origin and were formed by the cooling and crystallization of molten material that flowed onto the Earth's surface ( extrusive igneous rocks , such as basalt ) ...
... rocks of different mineral composition and origin . Some rocks are of magmatic origin and were formed by the cooling and crystallization of molten material that flowed onto the Earth's surface ( extrusive igneous rocks , such as basalt ) ...
Page 497
... ROCKS ; SEDIMENTARY ROCKS ; METAMORPHIC ROCKS ; ROCK MAGNETISM ; and SEA- FLOOR SPREADING . See also ARCHAEOLOGY ; CHEMICAL ELE- MENTS ; ISOTOPES ; and RADIOACTIVITY . I. Relative dating Historically , determination of relative - age ...
... ROCKS ; SEDIMENTARY ROCKS ; METAMORPHIC ROCKS ; ROCK MAGNETISM ; and SEA- FLOOR SPREADING . See also ARCHAEOLOGY ; CHEMICAL ELE- MENTS ; ISOTOPES ; and RADIOACTIVITY . I. Relative dating Historically , determination of relative - age ...
Page 505
... rock repeat of the second remark under igneous rock ; those sediment grains derived without alteration from igneous or metamorphic rocks date the time of crystallization or metamorphism , not the time of sedimentary accumulation because ...
... rock repeat of the second remark under igneous rock ; those sediment grains derived without alteration from igneous or metamorphic rocks date the time of crystallization or metamorphism , not the time of sedimentary accumulation because ...
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American animals areas asthenosphere atoms bee-eaters BIBLIOGRAPHY cells centimetres century charge church cipher collagen common complex compounds conifers conodonts Conrad conservation conservatism constant constitution consumer contains continental continental drift coordination coordination compounds copper Coraciiformes coral Corbusier corporations cosmic rays countries court covenant Cretaceous Crete cricket crime criminal Cro-Magnon crocodiles Cromwell Crusade crust crustaceans cryptanalysis decapods delinquency deposits early Earth economic effect electron energy England Europe example fine-structure constant fossil France French genera geosynclines groups hoopoes hornbills important industrial involved known land Le Corbusier ligands magnetic major ment metal metres modern myth natural nuclear occur ocean offenders organic particles percent period plaintext political pollution population problems protection proton reefs region result rocks sediments social species structure theory tion tradition trans United usually