The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 1997 |
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Page 940
... Pyroxenes also undergo transformations to phases of greater density at the high pressures within the mantle . Thus the mantle , although composed of material of familiar chemical com- position , consists , in its lower part at least ...
... Pyroxenes also undergo transformations to phases of greater density at the high pressures within the mantle . Thus the mantle , although composed of material of familiar chemical com- position , consists , in its lower part at least ...
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