Transactions of the Edinburgh Geological Society, Том 6Society, 1893 |
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Transactions of the Edinburgh Geological Society, Том 2 Edinburgh Geological Society Полный просмотр - 1874 |
Transactions of the Edinburgh Geological Society, Том 9 Edinburgh Geological Society Полный просмотр - 1910 |
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band Beare beds biotite boulder clay brucite calcite Carboniferous centimetres climate coal colour Corstorphine Corstorphine Hill Craigleith crust crystalline crystals cubic foot Darwin deposits district dolomite earthquake Edinburgh ejected blocks Europe evidence extensive feet Firth fossil fracture Geological Position.-In Geological Society Geological Survey geologists Glacial period glaciers gneiss grains granite Granton grey ice-sheet igneous igneous rocks interglacial lake land lava Leith limestone Loch lower magnesia mass metamorphic mica microliths Mierisch miles millimetre mineral Monte Somma mountains Nature North occur Old Red original paper periclase peridote Philosophical Magazine Pleistocene polarise portion present probably pyroxene quarry regions river rocks saccharoidal sandstone schists Scotland shales shell mounds side silicate Silurian species specimen square foot stone strata stratified structure surface terraces theory thickness tion tons per square trace trace trace valley volcanic weathering whilst wollastonite
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Стр. 135 - Poetry is the breath and finer spirit of all knowledge; it is- the impassioned expression which is in the countenance of all science.
Стр. 14 - We have evidence of almost every conceivable kind, organic and inorganic, that within a very recent geological period, central Europe and North America suffered under an Arctic climate. The ruins of a house burnt by fire do not tell their tale more plainly, than do the mountains of Scotland and Wales, with their scored flanks, polished surfaces, and perched boulders, of the icy streams with which their valleys were lately filled.
Стр. 83 - Coal, in truth, stands not beside but entirely above all other commodities. It is the material energy of the country — the universal aid - the factor in everything we do. With coal almost any feat is possible or easy; -without it we are thrown back into the laborious poverty of early times.
Стр. 144 - Well, but," said the naval officer, still indignant, " you know the port-holea are there.
Стр. 177 - Croll approached this question, and pointed out that the rate at which the materials are carried off the land is measured by the rate at which sediment is carried down by our river systems. Hence, in order to determine the present rate of sub-aerial denudation, we have only to ascertain the quantity of sediment annually carried down by the river systems.
Стр. 176 - Snow and ice lower the temperature by chilling the air and condensing the vapour into thick fogs. The great strength of the sun's rays during summer, due to his nearness at that season, would tend to produce an increased amount of evaporation. But the presence of snow-clad mountains and an icy season would chill the atmosphere, and condense the vapour into thick fogs.
Стр. 179 - The speculations of physicists regarding the limit of geological time prompted him to investigate the question of the probable age and origin of the sun. Accepting gravitation as the only conceivable source of the sun's heat, he reviewed the two forms in which this theory had been presented, first, the meteoric theory advocated by Meyer, and, second, the contraction theory, expounded by Helmholtz. Even if we postulate 100 millions of years as the limit of geological time, he maintained that gravitation...
Стр. 199 - On the hypothesis of the crust of the earth resting on fluid matter, would the influence of the moon (as indexed by the tides) affect the periods of the shocks, when the force which causes them is just balanced by the resistance of the solid crust ? " In this correspondence, Mr Milne Home describes certain curious phenomena observed not long after the great earthquake of 1839.
Стр. 13 - For my part, following out Lyell's metaphor, I look at the geological record as a history of the world imperfectly kept, and written in a changing dialect ; of this history we possess the last volume alone, relating only to two or three countries. Of this volume, only here and there a short chapter has been preserved ; and of each page, only here and there a few lines.
Стр. 122 - South America, I attributed the parallel lines to the action of the sea ; but I had to give up this view when Agassiz propounded' his glacier-lake theory. Because no other explanation was possible under our then state of knowledge, I argued in favour of sea-action ; and my error has been a good lesson to me never to trust in science to the principle of exclusion.