Nature, Volume 84Sir Norman Lockyer Macmillan Journals Limited, 1910 |
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Página 336
... rocks - the Keewatin in the north and west , and the Grenville series in the east , including large amounts of water - formed deposits . Though these older rocks are now found only on edge in synclines protected on each side by domes of ...
... rocks - the Keewatin in the north and west , and the Grenville series in the east , including large amounts of water - formed deposits . Though these older rocks are now found only on edge in synclines protected on each side by domes of ...
Página 376
... rocks . The expansion of the peridotites , due to serpentinisation , caused pressures throughout the mass , and the dykes ... rocks At Tritriva the volcanic chimney that was blown through the gneiss is clearly visible , and Dr. Johnston ...
... rocks . The expansion of the peridotites , due to serpentinisation , caused pressures throughout the mass , and the dykes ... rocks At Tritriva the volcanic chimney that was blown through the gneiss is clearly visible , and Dr. Johnston ...
Página 425
... Rocks . revision of Bulletin 305. By W. F. Hillebrand . Bull . 422 , U.S. Geol . Survey . Pp . 239. ( Washing- ton : 1910. ) As a consequence of the modern developments of Not petrology , accurate chemical analyses of rocks , and of the ...
... Rocks . revision of Bulletin 305. By W. F. Hillebrand . Bull . 422 , U.S. Geol . Survey . Pp . 239. ( Washing- ton : 1910. ) As a consequence of the modern developments of Not petrology , accurate chemical analyses of rocks , and of the ...
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