Climate and Time in Their Geological Relations: A Theory of Secular Changes of the Earth's ClimateD. Appleton, 1875 - 577 páginas |
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Página xii
... becoming less oblate . - Carrying Power of our River Systems the true Measure of Denudation . - Marine Denudation trifling in comparison to Sub- aërial . - Previous Methods of measuring Geological Time . - Circum- stances which show the ...
... becoming less oblate . - Carrying Power of our River Systems the true Measure of Denudation . - Marine Denudation trifling in comparison to Sub- aërial . - Previous Methods of measuring Geological Time . - Circum- stances which show the ...
Página 4
... becomes requisite . This is no mere arbitrary mode of procedure which may be adopted in one science and rejected in another . It is in reality a necessity of thought arising out of the very constitution of our intellect ; for the ...
... becomes requisite . This is no mere arbitrary mode of procedure which may be adopted in one science and rejected in another . It is in reality a necessity of thought arising out of the very constitution of our intellect ; for the ...
Página 6
... becoming cooler . And this high temperature of Palæozoic ages was generally referred to the influence of the earth's internal heat . It has , however , been proved by Sir William Thomson * that the general climate of our globe could not ...
... becoming cooler . And this high temperature of Palæozoic ages was generally referred to the influence of the earth's internal heat . It has , however , been proved by Sir William Thomson * that the general climate of our globe could not ...
Página 7
... becoming uniformly colder . The great discovery of the glacial epoch , and more lately that of a mild and temperate condition of climate extending during the Miocene and other periods to North Greenland , have introduced a complete ...
... becoming uniformly colder . The great discovery of the glacial epoch , and more lately that of a mild and temperate condition of climate extending during the Miocene and other periods to North Greenland , have introduced a complete ...
Página 12
... become as eccentric as that of the planet Pallas ( that is , as great as 0.24 ) , " still this would not alter in " Treatise on Astronomy , " § 315 ; " Outlines , " § 368 . † Annuaire for 1834 , p . 199. Edin . New Phil . Journ ...
... become as eccentric as that of the planet Pallas ( that is , as great as 0.24 ) , " still this would not alter in " Treatise on Astronomy , " § 315 ; " Outlines , " § 368 . † Annuaire for 1834 , p . 199. Edin . New Phil . Journ ...
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amount of heat antarctic aphelion arctic regions Atlantic beds bottom boulder clay Caithness Carboniferous cause centre of gravity channel coal cold periods condition of climate consequently considerable denudation deposits depth descend earth's orbit eccentricity ecliptic effect Eocene equator evidence existence extent fact feet flow foot-pounds force Geikie Geol geological geologists glacial epoch glacier globe Grangemouth gravel greater Greenland Gulf-stream heat received ice-cap icebergs inter-glacial periods island James Geikie Kilsyth land land-ice latitude lower mass mean melting miles Miocene molecules motion North North Sea northern obliquity ocean ocean-currents perihelion polar column polar regions poles present probably produce Professor quantity of heat radiation regarding result river rocks sand says Scotland sea-bottom sea-level shear Sir Charles Lyell slope snow southern hemisphere specific gravity stones stratified stream striated submergence summer sun's supposed surface theory thickness tion valley warm periods winter
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Página 331 - ... been removed from the general surface in one year ; and there seems no danger of our overrating the mean rate of waste by selecting the Mississippi as our example, for that river drains a country equal to more than half the continent of Europe, extends through twenty degrees of latitude, and therefore through regions enjoying a great variety of climate, and some of its tributaries descend from mountains of great height. The Mississippi is also more likely to afford us a fair test of ordinary...
Página 535 - Now, the perihelion of the orbit is situated nearly at the place of the northern winter solstice ; so that, were it not for the compensation we have just described, the effect would be to exaggerate the difference of summer and winter in the southern hemisphere, and to moderate it in the northern ; thus producing a more violent alternation of climate in the one hemisphere, and an approach to perpetual spring in the other. As it is, however, no such inequality subsists, but an equal and impartial...