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 xi
... Island , & c . - Opinions of Sir R. Murchison , Captain Osborn , and Professor Haughton . - Tree dug up by Sir E. Belcher in lat . 75 ° N .. • 258 CHAPTER XVII . FORMER GLACIAL EPOCHS . - REASON OF THE IMPERFECTION OF GEOLOGICAL RECORDS ...
... Island , & c . - Opinions of Sir R. Murchison , Captain Osborn , and Professor Haughton . - Tree dug up by Sir E. Belcher in lat . 75 ° N .. • 258 CHAPTER XVII . FORMER GLACIAL EPOCHS . - REASON OF THE IMPERFECTION OF GEOLOGICAL RECORDS ...
Página xiv
... Islands striated across . - Loess accounted for . - Professor Geikie's Suggestion . - Professor Geikie and B. N. Peach's Observations on East Coast of Caithness . - Evidence from Chalk Flints and Oolitic Fossils in Boulder Clay 435 ...
... Islands striated across . - Loess accounted for . - Professor Geikie's Suggestion . - Professor Geikie and B. N. Peach's Observations on East Coast of Caithness . - Evidence from Chalk Flints and Oolitic Fossils in Boulder Clay 435 ...
Página 2
... islands with continents , we shall find that difference of climatic conditions is the chief reason why life in the one differs so much from life in the other . And if we turn to the sca we find that organic life is there as much under ...
... islands with continents , we shall find that difference of climatic conditions is the chief reason why life in the one differs so much from life in the other . And if we turn to the sca we find that organic life is there as much under ...
Página 7
... island , but that the greater part of the temperate region down to com- paratively low latitudes was buried under ice , while at other periods Greenland and the Arctic regions , probably up to the North Pole , were not only free from ...
... island , but that the greater part of the temperate region down to com- paratively low latitudes was buried under ice , while at other periods Greenland and the Arctic regions , probably up to the North Pole , were not only free from ...
Página 9
... islands not only existed then as they do now , but every year is adding to the amount of evidence which goes to show that so recent , geologically considered , is the glacial epoch that the very contour of the surface was pretty much ...
... islands not only existed then as they do now , but every year is adding to the amount of evidence which goes to show that so recent , geologically considered , is the glacial epoch that the very contour of the surface was pretty much ...
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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...