The New Encyclopaedia Britannica, Volume 6Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 54
... occur at exactly the same depth . By far the most important transforma- tion would be of magnesium silicate , Mg : SiO , ( spinel- like ) , to the strontium plumbate structure , which may well occur within a relatively narrow depth ...
... occur at exactly the same depth . By far the most important transforma- tion would be of magnesium silicate , Mg : SiO , ( spinel- like ) , to the strontium plumbate structure , which may well occur within a relatively narrow depth ...
Page 65
... occur whenever ( 1 ) the soft rocks within a limited area are released from the weight of the overlying rocks , and ( 2 ) this release gives rise to stresses , which , even if they do not surpass the shear resistance of plastic beds ...
... occur whenever ( 1 ) the soft rocks within a limited area are released from the weight of the overlying rocks , and ( 2 ) this release gives rise to stresses , which , even if they do not surpass the shear resistance of plastic beds ...
Page 69
... occur beneath the sea . The greatest submarine seismicity is usually near continental coasts or island chains , so that the larger events often have strong effects on land . Nevertheless , the large earth- quakes that attract public ...
... occur beneath the sea . The greatest submarine seismicity is usually near continental coasts or island chains , so that the larger events often have strong effects on land . Nevertheless , the large earth- quakes that attract public ...
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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