The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 1997 |
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Page 940
... basalts estimated from peridotite nodules calculated from a meteoritic Earth model basalt Silicon dioxide ( SiO2 ) 42.86 45.16 45.1 44.2 48.09 Titanium dioxide ( TiO2 ) 0.33 0.71 0.5 0.1 0.13 Aluminum oxide ( Al2O3 ) 6.99 3.54 4.1 2.7 ...
... basalts estimated from peridotite nodules calculated from a meteoritic Earth model basalt Silicon dioxide ( SiO2 ) 42.86 45.16 45.1 44.2 48.09 Titanium dioxide ( TiO2 ) 0.33 0.71 0.5 0.1 0.13 Aluminum oxide ( Al2O3 ) 6.99 3.54 4.1 2.7 ...
Page 941
... basalts ( averaging about 50 percent silica ) , whereas continental areas include large granitic masses , with silica ... basalt ( W - 1 ) shales sandstones carbonates metamorphic seawater rocks ( type I ) ( 1 ) Hydrogen 2.2 % 200 1,400 ...
... basalts ( averaging about 50 percent silica ) , whereas continental areas include large granitic masses , with silica ... basalt ( W - 1 ) shales sandstones carbonates metamorphic seawater rocks ( type I ) ( 1 ) Hydrogen 2.2 % 200 1,400 ...
Page 1018
... basalt ican Pre- cambrian granites Table 26 : Some Properties of the Rare - Earth. different locations . In general , it has been found that the more basic ( or alkaline ) rocks contain smaller amounts of rare earths than do the more ...
... basalt ican Pre- cambrian granites Table 26 : Some Properties of the Rare - Earth. different locations . In general , it has been found that the more basic ( or alkaline ) rocks contain smaller amounts of rare earths than do the more ...
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