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 ix
... Supposed Influence of Heat derived from the Earth's Crust . - Circulation without Difference of Level . - A Confusion of Ideas in Reference to the supposed Agency of Polar Cold.-M. Dubuat's Experiments . - A Begging of the Question at ...
... Supposed Influence of Heat derived from the Earth's Crust . - Circulation without Difference of Level . - A Confusion of Ideas in Reference to the supposed Agency of Polar Cold.-M. Dubuat's Experiments . - A Begging of the Question at ...
Página xi
... of the Tertiary Period was supposed to be warmer than the present . - Mr . James Geikie on the Defects of Palæontological Evidence . - Conclusion • 266 CHAPTER XVIII . ' FORMER GLACIAL EPOCHS ; GEOLOGICAL EVIDENCE CONTENTS . xi.
... of the Tertiary Period was supposed to be warmer than the present . - Mr . James Geikie on the Defects of Palæontological Evidence . - Conclusion • 266 CHAPTER XVIII . ' FORMER GLACIAL EPOCHS ; GEOLOGICAL EVIDENCE CONTENTS . xi.
Página xii
... supposed.- Figures convey a very inadequate Conception of immense Duration .-- Mode of representing a Million of Years . - Probable Date of the Glacial Epoch PAGE 292 • 311 CHAPTER XX . GEOLOGICAL TIME . - METHOD OF MEASURING THE RATE ...
... supposed.- Figures convey a very inadequate Conception of immense Duration .-- Mode of representing a Million of Years . - Probable Date of the Glacial Epoch PAGE 292 • 311 CHAPTER XX . GEOLOGICAL TIME . - METHOD OF MEASURING THE RATE ...
Página 6
... supposed that during the Cambrian , Silurian , and other early geological periods , the climate of our globe was much hotter than now , and that ever since it has been gradually becoming cooler . And this high temperature of Palæozoic ...
... supposed that during the Cambrian , Silurian , and other early geological periods , the climate of our globe was much hotter than now , and that ever since it has been gradually becoming cooler . And this high temperature of Palæozoic ...
Página 17
... supposed the equatorial waters would be deflected more into the northern or cold hemisphere than into the southern or warm hemisphere , because the difference of temperature between the equator and the poles would be greater on the cold ...
... supposed the equatorial waters would be deflected more into the northern or cold hemisphere than into the southern or warm hemisphere , because the difference of temperature between the equator and the poles would be greater on the cold ...
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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...