单词 | Glacial epoch |
例句 | Glacial epochs have repeatedly wiped out thousands upon thousands of species and played a part in the origin of entirely new types of plants and animals. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z I thought myself therefore justified in considering this as a case of varieties which have come into existence subsequently to the Glacial epoch. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z A composite map showing the portions of the continent which were covered with ice at one time or another during the Glacial epoch is reproduced in Plate V. Plate V.—Pleistocene glacial deposits. North America 2011-05-05T02:00:20.027Z Yet it is found that since a period prior to the great Ice Age, or Glacial epoch, it has remained absolutely unchanged. The Old Riddle and the Newest Answer There is every reason to believe that man existed for ages before the Glacial epoch. Bible Myths and their Parallels in other Religions Being a Comparison of the Old and New Testament Myths and Miracles with those of the Heathen Nations of Antiquity Considering also their Origin and Meaning "But above all in educational importance I rank the advantage of seeing human nature in its primitive surroundings, far from the squalid and chilly influences of the tail-end of the Glacial epoch." Cocoa and Chocolate Their History from Plantation to Consumer These movements are attested by the position of the old shore lines formed during the later stages of the Glacial epoch. Outlines of the Earth's History A Popular Study in Physiography Several of these large animals survived the vicissitudes of climate characteristic of the Glacial epoch, but have since become extinct. North America 2011-05-05T02:00:20.027Z The answer is, they were stranded there at the end of the Glacial epoch. Science in Arcady Glacial epochs are great things, but they are vague—vague. Life on the Mississippi, Part 4. It is a bit of preglacial landscape, showing the condition of the entire region before the Glacial epoch. The Elements of Geology An eminent archaeologist is of opinion that this boat dates from the Glacial epoch, perhaps even from a more remote time. Manners and Monuments of Prehistoric Peoples In brief, all the geological evidence thus far gathered bearing on the antiquity of man in America points to the conclusion that he came after the Glacial epoch. North America 2011-05-05T02:00:20.027Z But above all in educational importance I rank the advantage of seeing human nature in its primitive surroundings, far from the squalid and chilly influences of the tail-end of the Glacial epoch. Science in Arcady After writing last to you I began to think that the Malay Land might have existed through part of the Glacial epoch. More Letters of Charles Darwin — Volume 1 The Glacial epoch ends with the melting of the ice sheets of North America and Europe, and the replacement of the Pleistocene mammalian fauna by present species. The Elements of Geology We do not know that the Glacial epoch was strictly simultaneous at these several far distant points on opposite sides of the world. On the Origin of Species By Means of Natural Selection, or, the Preservation of Favoured Races in the Struggle for Life During this time of great ice accumulation and of glacial advance and retreat, or the Glacial epoch, as it is termed, fully one-half of North America was buried beneath ice-sheets of the continental type. North America 2011-05-05T02:00:20.027Z Especially is it of importance in this connection to point out that the Glacial epoch is not yet entirely finished—if, indeed, it is ever destined to be finished. Science in Arcady It harmonises with the modification of species; and without admitting this awful postulate, the Glacial epoch in the south and tropics does not work in well. More Letters of Charles Darwin — Volume 1 The two succeeding stages mark the greatest snowfall of the Glacial epoch. The Elements of Geology Did the ice fields of the Glacial epoch bear heavy surface moraines like the medial and lateral moraines of valley glaciers? The Elements of Geology One other condition which has modified the history 106 of the plateau region throughout, but most decidedly at the north, is the climatic change which culminated in the Glacial epoch. North America 2011-05-05T02:00:20.027Z The distribution of species in the Glacial epoch was far different from that of the present. The Elements of Geology If, however, you say—as you may have very good reasons for saying—that the existing species got their present diffusion before the Glacial epoch, I should have no answer. More Letters of Charles Darwin — Volume 1 The beaches which mark the successive heights of these glacial lakes are not parallel; hence the warping began before the Glacial epoch closed. The Elements of Geology Our studies of glaciers have prepared us to decipher and interpret the history of the Glacial epoch, as it is recorded in the surface deposits known as the drift. The Elements of Geology Along one of the faults of this region it is estimated that there has been a movement of at least four hundred feet since the Glacial epoch. The Elements of Geology Is there an evidence that the south of England and of Ireland were not submerged during the Glacial epoch, when the W. and N. of England were islands in a glacial sea? More Letters of Charles Darwin — Volume 1 Oddly enough, I have just finished in great detail, giving evidence of coolness in tropical regions during the Glacial epoch, and the consequent migration of organisms through the tropics. More Letters of Charles Darwin — Volume 1 The great proboscidians of the Glacial epoch were about the size of modern elephants, and somewhat smaller than their ancestral species in the Pliocene. The Elements of Geology At page 347 he sees this objection, and wriggles out of his difficulty by putting the date of the Channel 'towards the close of the Glacial epoch.' More Letters of Charles Darwin — Volume 1 Such are my reasons for not as yet admitting the warmer period subsequent to Glacial epoch; but I daresay I may be quite wrong, and shall not be at all sorry to be proved so. More Letters of Charles Darwin — Volume 1 I quite agree with what you say of almost certainty of Glacial epoch having destroyed the Spanish saxifrages, etc., in Ireland. More Letters of Charles Darwin — Volume 1 In the driving southward of the vegetation by the Glacial epoch the Greenland flora would be "driven into the sea, that is, exterminated." More Letters of Charles Darwin — Volume 1 |
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