The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 978
... ORIGIN AND EVOLUTION OF COMETS The origin of comets has been attributed to : ( 1 ) volcanic eruptions from the major planets or from their satellites , ( 2 ) interstellar origin , ( 3 ) formation within the solar sys- tem . The first is ...
... ORIGIN AND EVOLUTION OF COMETS The origin of comets has been attributed to : ( 1 ) volcanic eruptions from the major planets or from their satellites , ( 2 ) interstellar origin , ( 3 ) formation within the solar sys- tem . The first is ...
Page 979
... Origin and evolution : J.H. OORT , " Empirical Data on the Origin of Comets , " in MMC ; RAYMOND A. LYTTLETON , " Com- ets , " Observatory , 90 : 178-186 ( 1970 ) ; BRIAN G. MARSDEN , " One Hundred Periodic Comets , " Science , 155 ...
... Origin and evolution : J.H. OORT , " Empirical Data on the Origin of Comets , " in MMC ; RAYMOND A. LYTTLETON , " Com- ets , " Observatory , 90 : 178-186 ( 1970 ) ; BRIAN G. MARSDEN , " One Hundred Periodic Comets , " Science , 155 ...
Page 1111
... Origin of tillites . A tillite is , by definition , an ancient , consolidated till and must therefore be of glacial origin . In the case of Recent tills ( those formed during the last 10,000 years ) , the connection with glaciers or ice ...
... Origin of tillites . A tillite is , by definition , an ancient , consolidated till and must therefore be of glacial origin . In the case of Recent tills ( those formed during the last 10,000 years ) , the connection with glaciers or ice ...
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