Compte-rendu de la XIIe Session, Canada, 1913, Band 12Imprimerie du gouvernement, 1914 - 1034 Seiten |
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Seite 114
... beds , with thick- nesses in descending order of 29 , 25 , 49 , 228 , 265 , 166 and 44 feet , the third and two succeeding beds ( 542 feet thick ) being separated by two bands of clay , 6 feet in thickness . Other deposits , varying ...
... beds , with thick- nesses in descending order of 29 , 25 , 49 , 228 , 265 , 166 and 44 feet , the third and two succeeding beds ( 542 feet thick ) being separated by two bands of clay , 6 feet in thickness . Other deposits , varying ...
Seite 243
... beds which dip inward in the direction of the centre of the arc.2 Wherever competent formations ( limestone or dolomite ) are present and weaker formations lie below , there will be a ten- dency for the latter to fuse , provided it is ...
... beds which dip inward in the direction of the centre of the arc.2 Wherever competent formations ( limestone or dolomite ) are present and weaker formations lie below , there will be a ten- dency for the latter to fuse , provided it is ...
Seite 300
... beds at the crests of anticlines forming , e.g. , the famous " saddle reefs " of Bendigo and Castlemaine . In these fields saddle reefs are successively met with in depth when sinking on an anticlinal axis , so that a condition ensues ...
... beds at the crests of anticlines forming , e.g. , the famous " saddle reefs " of Bendigo and Castlemaine . In these fields saddle reefs are successively met with in depth when sinking on an anticlinal axis , so that a condition ensues ...
Seite 307
... bed-rock is not that of a typical stream deposit, — rounded pebbles, gravel and sand — but I have no doubt of its being a derived deposit, resting in a definite channel cut through a much older rock. Much of it is a cemented mass of ...
... bed-rock is not that of a typical stream deposit, — rounded pebbles, gravel and sand — but I have no doubt of its being a derived deposit, resting in a definite channel cut through a much older rock. Much of it is a cemented mass of ...
Seite 326
... beds found at the mine are part of a series of sedimentary beds belonging with the white lime- stone of the Franklin region . " Again , at the Simpson and the Cedar Hill mines , near McAfee , he describes the hematite as occurring in ...
... beds found at the mine are part of a series of sedimentary beds belonging with the white lime- stone of the Franklin region . " Again , at the Simpson and the Cedar Hill mines , near McAfee , he describes the hematite as occurring in ...
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Häufige Begriffe und Wortgruppen
Allemagne America andesite Animikie Archæan basalt basin batholithic beds Belgique calcite Cambrian Canada Comité conglomerate Congrès contain Cordillera correlation Coutchiching deposits depth diabase diastrophic differentiation district dolomite earthquakes east eastern erosion États-Unis d'Amérique été evidence excavation fait faunas feet formations fossils Gebiet Geol Geological Survey géologique geologists glacial glacier gneisses Gouvernement granite Huronian ice-sheet igneous Iles Britanniques inter-Glacial intrusive island Keewatin l'Université laccoliths Lago Lake Superior land Laurentian lavas limestone lower magma marine membres metres miles minerals Mines mountain occur Ontario Ordovician Ottawa Paleozoic period Phosphorit Pre-Cambrian present Président probably Professeur Professor of Geology province quartzite region rhyolite Richmond river rocks Russie sand sandstone schists séance Secrétaire sedimentary sediments shale Silurian slope Société strata stratigraphic Sudbury sujet surface Teil thickness tion Toronto trace foliaire unconformity University upper valley veins volcanic western zone
Beliebte Passagen
Seite 88 - Surely there is a vein for the silver, And a place for gold where they fine it. Iron is taken out of the earth, And brass is molten out of the stone.
Seite 391 - The group on Lake Huron we have computed to be about 10,000 feet thick, and from its volume, its distinct lithological character, its clearly marked date posterior to the gneiss, and its economic importance as a copper-bearing formation, it appears to me to require a distinct appellation, and a separate color on the map. Indeed, the investigation of Canadian geology could not be conveniently carried on without it. We have, in consequence, given to the series the title of Huronian. A distinctive name...
Seite 415 - Pre-Cambrian sediments present the products of mature disintegration, while the earlier portions are usually characterized by partial or immature disintegration. The former are best typified by the great beds of quartzite, that imply the complete disintegration of large quantities of quartz-bearing rock and the subsequent assortment and reduction of its quartz particles. The shales and schists imply the same process, but in their metamorphosed condition • they are less easily and safely distinguished...
Seite 553 - In this assumption . . . there lies, if it be true, a basis for the natural division of geologic events, these movements being in themselves and in their immediate consequences the basis of such division. " The major movements of the earth's surface have consisted of the sinking of the ocean bottoms and the withdrawal of additional waters into the basins whose capacities were thereby increased.
Seite 172 - Part 2 carries a reconnaissance map of the United States showing the distribution of the geologic systems as far as known, compiled from data in the possession of the United States Geological Survey, by WJ McGee, 1893.
Seite 40 - December 28th, 1924, a meeting for the purpose of organizing a linguistic society was held in the American Museum of Natural History, 77th Street and Central Park West, New York City...
Seite 505 - Toward the south, west, and northwest, the Cordilleran outflow extended to the boundaries of our glaciated area; but eastward, pouring through passes of the Rocky Mountains, and in the Peace river region probably overtopping the highest summits, which there are only about 6,000 feet above the sea, the...
Seite 799 - The great disturbances at Messina, as is generally known, were due to an adjustment along the line of a great fault in the earth's crust, which is "marked by the Straits of Messina. The work of the Italian geological survey has demonstrated that these disturbances are propagated along very definite lines. So thoroughly did the Italian geologists do their work that, by superimposing upon a geologic and topographic map of...
Seite 565 - ... of life is partial or complete, first in the species, but more importantly in the loss of old and the appearance of new allied or unallied genera — so was the interval of time shorter or longer that elapsed between the close of the lower and the commencement of the upper formation ; and so it often happens that strata a few yards in thickness, or, recently applied by D'Orbigny, Sedgwick, Murchison, and Barrande ; and some are adopted from popular usage.
Seite 551 - the theory of secular oscillations of the continents is not competent to explain the repeated inundation and emergence of the land. The changes are much too extensive and too uniform to have been caused by movements of the earth's crust...