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
... Cold considered by Dr. Carpenter the Primum Mobile . - 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 ...
... Cold considered by Dr. Carpenter the Primum Mobile . - 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 ...
Página x
... Cold and Warm Periods in North and South . - Mr . Darwin's Views quoted . - How Glaciers at the Equator may be accounted for . - Migration across the Equator . • 203 210 226 CHAPTER XV.❤ WARM INTER - GLACIAL PERIODS . Alternate Cold ...
... Cold and Warm Periods in North and South . - Mr . Darwin's Views quoted . - How Glaciers at the Equator may be accounted for . - Migration across the Equator . • 203 210 226 CHAPTER XV.❤ WARM INTER - GLACIAL PERIODS . Alternate Cold ...
Página xi
... Cold and Warm Periods . - Warm Inter - glacial Periods a Test of Theories . - Reason why their Occurrence has not been hitherto recog- nised . Instances of Warm Inter - glacial Periods . - Dranse , Dürnten , Hoxne , Chapelhall ...
... Cold and Warm Periods . - Warm Inter - glacial Periods a Test of Theories . - Reason why their Occurrence has not been hitherto recog- nised . Instances of Warm Inter - glacial Periods . - Dranse , Dürnten , Hoxne , Chapelhall ...
Página 1
... cold , frost and snow . The valleys were not produced by violent dislocations , nor the hills by sudden upheavals , but were actually carved out of the solid rock , silently and gently , by the agencies to which we have referred . " The ...
... cold , frost and snow . The valleys were not produced by violent dislocations , nor the hills by sudden upheavals , but were actually carved out of the solid rock , silently and gently , by the agencies to which we have referred . " The ...
Página 8
... cold period , such as the glacial epoch , we have to assume that the earth must have come into the vicinity of a cold body . * But recent discoveries in regard to inter - glacial periods are wholly irreconcilable with this theory . A ...
... cold period , such as the glacial epoch , we have to assume that the earth must have come into the vicinity of a cold body . * But recent discoveries in regard to inter - glacial periods are wholly irreconcilable with this theory . A ...
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Términos y frases comunes
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
Pasajes populares
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...