The New Encyclopaedia Britannica, Volume 6Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 26
... caused when changes are in- duced in rocks by the thermal effect of intrusive igenous rocks ( rocks formed deep within the Earth's crust by cooling molten material ) . Regional metamorphism is caused by a combination of the thermal ...
... caused when changes are in- duced in rocks by the thermal effect of intrusive igenous rocks ( rocks formed deep within the Earth's crust by cooling molten material ) . Regional metamorphism is caused by a combination of the thermal ...
Page 31
... caused mostly by the tidal force of the Sun , there should not be an appreciable difference in its velocity between the day and night . The electrical conductivity of the ionosphere , however , is much smaller in the dark time than in ...
... caused mostly by the tidal force of the Sun , there should not be an appreciable difference in its velocity between the day and night . The electrical conductivity of the ionosphere , however , is much smaller in the dark time than in ...
Page 63
... caused hun- dreds of deaths . Extensive depreciation of agricultural land , as well as of wooded areas , may also be caused by slope movements . Major slides result in the complete re- moval or extinction of forest growth ; trees are ...
... caused hun- dreds of deaths . Extensive depreciation of agricultural land , as well as of wooded areas , may also be caused by slope movements . Major slides result in the complete re- moval or extinction of forest growth ; trees are ...
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19th century Africa agriculture America Azande Basin British Byzantine capital Catholic central centre changes Chinese Christian Constantinople continental continued core crinoids crust cubic centimetre cultural density depth Earth earthquakes East African Eastern echinoderms eclipse economic economists ecosystem Ecuador ecumenical equations Europe export feet forecasting fossil geoid geological geomagnetic geosyncline German gravity groups holothurians important income increase Indian industry investment isostasy Kenya kilometres labour Lake Lake Victoria land magnetic field major mantle ment metres miles modern Mombasa Monophysite Moon mountains movement nomic North northern ocean organization Orthodox Church output Paleozoic patriarch percent peridotite period planning political population Precambrian production region River rocks Russian sector seismic slope social society solar South Soviet species structure surface Tanzania temperature theory tion trade traditional tube feet Uganda underdeveloped countries United waves West Western