| 单词 | glacial epoch |
| 例句 | The Pleistocene glacial epoch began at about 2.6 Ma, which is equivalent to half the thickness of the thin grey line at the top of the yellow bar marked “Cenozoic.” Physical Geology 2015-01-01T00:00:00Z The Salmon is a tributary of the mighty Columbia River, which would have been the first large waterway encountered by people who made it south of the ice sheets during the last glacial epoch. Fishing for the first Americans 2015-09-07T04:00:00Z If we suppose that the temperature of the sun at the present time is still increasing, or at least has been increasing until now, the glacial epoch can be easily accounted for. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z This occurrence of loess is the more noteworthy, since loess is rarely found in association with drift of the last glacial epoch. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z This is believed to be connected with the glacial epoch and the augmentation of the streams during those periods when the ice was melting away. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 4 "Grasshopper" to "Greek Language" 2011-11-28T03:00:19.517Z R. T. Chamberlin, as already stated, finds that the consensus of opinion is that inter-glacial epochs have averaged five times as long as glacial epochs. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z These old beaches and terraces show that the land was formerly depressed and has since risen; but, as shown above, has not regained the elevation it had previous to the glacial epoch. North America 2011-05-05T02:00:20.027Z Many remains, referred to the glacial epoch, may in reality, have occupied the time of the floods occurring just previous to the commencement of the inter-glacial. A Manual of the Antiquity of Man 2011-02-21T03:00:07.080Z Extraglacial deposits, made by the waters of any glacial epoch if they flowed and deposited beyond the farthest limit of the ice. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z At the close of the Tertiary period the 'glacial epoch' of Pleistocene times began, and the British Islands and a large part of northern Europe and North America were then cased in snow and ice. Geology 2011-02-20T03:00:12.660Z Hence it is supposed to be disturbed, although not so much as at the height of the last glacial epoch. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z During the glacial epoch the whole northern part of the continent was covered with a thick ice sheet, which was continually renewed at the north, and as continually drifted slowly in a general southerly direction. The Niagara River 2011-02-08T03:00:09.703Z This valley is filled with drift of the glacial epoch, and this blocking up of the channel may have compelled it to open a new passage. A Manual of the Antiquity of Man 2011-02-21T03:00:07.080Z The region may have been affected by the ice of more than one glacial epoch, but the chief results now observable were effected during the last, and the others need not be considered. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z Indeed, the belief is now gaining ground, that the so-called glacial epoch of Pleistocene times was not one long continuous age of ice, but rather consisted of an alternation of warm and cold periods. Geology 2011-02-20T03:00:12.660Z The curve suggests a glacial epoch culminating about 28,000 years ago. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z A water-proof manufacturer on the sunny side of forty appeared, the long glacial epoch was broken up, and the first orange blossom ripened for the Peyser household. Ghetto Tragedies 2011-01-27T03:00:46.507Z In all probability the very oldest implements of the post-tertiary, and consequently the beginning of the glacial epoch, if not of the pliocene, are those found in the south of Hampshire, between Gosport and Southampton. A Manual of the Antiquity of Man 2011-02-21T03:00:07.080Z This was followed by the glacial epoch, which substituted for tropical conditions those now existing in the Arctic zone. Twentieth Century Socialism What It Is Not; What It Is: How It May Come 2011-01-17T03:00:51.213Z Even more remarkable changes were effected, towards the end of, or since, the glacial epoch, over the region now occupied by the Levantine Mediterranean and the �gean Sea. Essays Upon Some Controverted Questions 2010-12-20T17:12:31.233Z Thus at the height of a glacial epoch there would apparently be great storminess in the area where the loess is found, especially in summer. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Proofs of the Recent Occurrence of a Glacial Epoch.—The phenomena that prove the recent occurrence of glacial epochs in the temperate regions are exceedingly varied, and extend over very wide areas. Island Life Or the Phenomena and Causes of Insular Faunas and Floras In the construction of a canal between Stockholm and Gothenburg it was necessary to cut through one of those hills called osars, or erratic blocks, which were deposited by the drift-ice during the glacial epoch. A Manual of the Antiquity of Man 2011-02-21T03:00:07.080Z One of the problems which geologists now propose to themselves is to ascertain definitely whether the existence of man before the close of the glacial epoch can be certainly proved. The Galaxy, Volume 23, No. 2, February, 1877 Whether man existed prior to the glacial epoch is still in doubt. History of Human Society The best authorities put the climax of the last glacial epoch between twenty-five and thirty thousand years ago. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z How long ago this occurred we do not know, but one of the last intercalated mild periods of the glacial epoch itself seems to offer all the necessary conditions. Island Life Or the Phenomena and Causes of Insular Faunas and Floras During the glacial epoch the condition of man must have remained unchanged, after he had supplied himself with rude stone weapons. A Manual of the Antiquity of Man 2011-02-21T03:00:07.080Z These, he thinks, are the oldest specimens of man's handiwork known, and prove him to have lived before the culmination of the glacial epoch. The Galaxy, Volume 23, No. 2, February, 1877 The huge boulders from the glacial epoch which are scattered over their country are the pebbles he tossed in play or in anger. The Religious Sentiment Its Source and Aim: A Contribution to the Science and Philosophy of Religion According to our stellar hypothesis, occasional groups of glacial epochs would be expected to occur close together and to form long glacial periods. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z No doubt a prejudice has been excited against it in the minds of many geologists, by its being thought to lead necessarily to frequently recurring glacial epochs throughout all geological time. Island Life Or the Phenomena and Causes of Insular Faunas and Floras The beds are subsequent in origin to the glacial epoch. A Manual of the Antiquity of Man 2011-02-21T03:00:07.080Z The soils of these various regions having never been subjected to a glacial epoch, are very diverse, and it would be a thankless task to attempt any detailed classification on the basis of fertility. The Negro Farmer Claims have been made of the discovery of evidences of man in Europe long before the glacial epoch, reaching as far back as the Pliocene and even the Miocene Age. Man And His Ancestor A Study In Evolution Beyond the ice sheets many regions appear to have enjoyed an unusually heavy precipitation during the glacial epochs. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Without these conditions cold alone, however great, can produce no glacial epoch. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Drift, a collection of loose earth and bowlders, distributed during the glacial epoch over large portions of the earth's surface. A Manual of the Antiquity of Man 2011-02-21T03:00:07.080Z The most recent glacial epoch was placed by Dr. Croll about 200,000 years ago, when the eccentricity of the earth's orbit was 3·4 times as great as it is now. A Popular History of Astronomy During the Nineteenth Century Fourth Edition If we could accept as fact the seeming very ancient evidences of man's handiwork, we would be obliged to consider him an inmate of Europe long ages before the glacial epoch. Man And His Ancestor A Study In Evolution Hence the earth's climate still shows something of the great diversity of seasons and of zones which is so marked a characteristic of glacial epochs. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z This seems more probable than that so many species should have reached Ireland for the first time during the last union with the continent subsequent to the glacial epoch. Island Life Or the Phenomena and Causes of Insular Faunas and Floras The Austro-Columbian fauna, as a whole, therefore, existed antecedently to the glacial epoch. Ancient America, in Notes on American Archaeology If in such cases no variation or transmutation had taken place since the glacial epoch, then indeed there would have been a difficulty of some magnitude. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions During the glacial epoch this vapour fell as snow, and the consequence was a system of glaciers which have left traces and evidences of the most impressive character in the region of the Killarney Lakes. Fragments of science, V. 1-2 The irregular duration of the interval from one glacial epoch to another corresponds with the irregular distribution of the stars. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The majority of these shells, especially the peculiar forms, are very small, and many of them may date back to beyond the glacial epoch. Island Life Or the Phenomena and Causes of Insular Faunas and Floras It certainly was before the Pharaohs and perhaps before the glacial epoch. Folkways A Study of the Sociological Importance of Usages, Manners, Customs, Mores, and Morals So, when a glacial epoch comes on, some animals must acquire warmer fur, or a covering of fat, or else die of cold. Contributions to the Theory of Natural Selection A Series of Essays But this would not produce a glacial epoch. Fragments of science, V. 1-2 These in turn seem to merge into and be imposed on the greater waves which form glacial stages, glacial epochs, and glacial periods. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Even some portion of the pal�olithic age, and of the more recent gravels and cave-earths may come into the same general period if they were formed when the glacial epoch was passing away. Island Life Or the Phenomena and Causes of Insular Faunas and Floras The cold of the glacial epochs of course operated alike with the other races, but the few words to be said on this subject may as well come in here. The Story of Atlantis and the Lost Lemuria Ah, I suppose either the Gulf Stream has got diverted, or the earth's axis has shifted and we are in another glacial epoch. The Mummy and Miss Nitocris A Phantasy of the Fourth Dimension It is now, I suppose, fifteen or sixteen years since I found myself conversing with an illustrious philosopher regarding that glacial epoch which the researches of Agassiz and others had revealed. Fragments of science, V. 1-2 The cyclonic hypothesis also seems to offer a satisfactory explanation of variations in the amount of loess associated with the several glacial epochs. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Many geologists now hold that there was no great submergence during the glacial epoch. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Was its bed sea, or dry land, or under an ice sheet, during the long ages of the glacial epoch? Health and Education There were also a good many doubts and suggestions on the very difficult questions in the discussion of the causes of the glacial epochs. Alfred Russel Wallace: Letters and Reminiscences, Vol. 1 In Ireland we have an excellent test case, for we know that it has been separated from Britain since the end of the glacial epoch, certainly many thousand years. Darwinism (1889) Students of glaciation believe that during the last glacial epoch the mean temperature of the earth as a whole was only 5° or 6°C. lower than at present. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z It must be remembered that during the height of the glacial epoch Ireland was continental, so that these plants may have followed the retreating ice to their present stations and survived the subsequent depression. Island Life Or the Phenomena and Causes of Insular Faunas and Floras And further: that while the glacial deposit was principally at the lower end, the river deposit, since the glacial epoch, has been wholly at the upper end. The Lake of the Sky Lake Tahoe in the High Sierras of California and Nevada, its History, Indians, Discovery by Frémont, Legendary Lore, Various Namings, Physical Characteristics, Glacial Phenomena, Geology, Single Outlet, Automobile Routes, Historic Towns, Early Mining Excitements, Steamer Ride, Mineral Springs, Mountain and Lake Resorts, Trail and Camping Out Trips, Summer Residences, Fishing, Hunting, Flowers, Birds, Animals, Trees, and Chaparral, with a Full Account of the Tahoe National Forest, the Public Use of the Water of Lake Tahoe and Much Other Interesting Matter We know from fossils, that species have remained entirely unaltered since the glacial epochs began, and how many generations are included even in that! Creation and Its Records It is supposed that the Asian elephant advanced far to the North during the interglacial period and perished in the recurrent glacial epoch. Through the Mackenzie Basin A Narrative of the Athabasca and Peace River Treaty Expedition of 1899 Before leaving this subject it may be well to recall that the relative lessening of precipitation in equatorial latitudes during the glacial epochs was probably caused by the diversion of moisture from the trade-wind belt. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z We can easily see how such repeated submergences and elevations would increase and aggravate the migrations and extinctions that a glacial epoch is calculated to produce. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Then follows the traditional account of some great cataclysm of the last glacial epoch. The Woman's Bible It is probable that the last great ice-cap of the glacial epoch nowhere reached half way to the equator. Life: Its True Genesis The climate, as has been told, was almost as equable then as now, but with a certain crispness which was a heritage from the glacial epoch. The Story of Ab A Tale of the Time of the Cave Man If they are magnified still more the result is apparently glacial epochs like those of the Pleistocene, and if they are magnified to a still greater extent, the result is Permian or Proterozoic glaciation. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z In the 2nd edition of his Manual of Geology, Professor Dana suggests elevation of Arctic lands sufficient to exclude the Gulf Stream, as a source of cold during glacial epochs. Island Life Or the Phenomena and Causes of Insular Faunas and Floras We have no traditions of a submergence of the continent, and there are only the usual evidences of a glacial epoch which you find everywhere to support such a theory. A Traveler from Altruria: Romance It is true that some eminent astronomers and physicists hesitate to accept the theory that these glacial epochs are due to the eccentricity of the earth's orbit. Life: Its True Genesis It may be that it is the dim memory of a glacial epoch. Field and Hedgerow Being the Last Essays of Richard Jefferies It is probable that if they represented a glacial epoch they would be depauperated by the cold as are the snails of far northern regions. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z I have first given such a sketch of the most salient facts as to render the phenomena of the glacial epoch clear and intelligible. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Dr. Bowman says that the greater part of the vast accumulation of lavas and volcanic cinders in this vicinity goes far back to a period preceding the last glacial epoch. Inca Land Explorations in the Highlands of Peru Was its bed, sea or dry land, or under an ice sheet, during the long ages of the glacial epoch? Scientific Essays and Lectures We may now therefore inquire whether the peopling of Europe by the human race and by the mammoth and other mammalia now extinct, was brought about during the concluding phases of the glacial epoch. The Antiquity of Man The inauguration of another cycle of increased disturbance of the sun, with a marked increase in storminess, would inaugurate another glacial epoch. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z While adopting generally Mr. Croll's views as to the causes of the "glacial epoch," I have introduced certain limitations and modifications. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Science teaches that man existed during the glacial epoch, which was at least fifty thousand years before the Christian era. God and my Neighbour Since the close of the glacial epoch the coasts of Newfoundland and Labrador have risen hundreds of feet, but the rate of emergence has not been uniform. The Elements of Geology By this course they may have made their way, at any epoch, Miocene, Pliocene, or Pleistocene, antecedently to the glacial epoch, to Mongolia, on the east coast of northern Asia. The Antiquity of Man The main question is whether such variations can produce changes so rapid as glacial epochs and historical pulsations. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z No less than seven different causes have been at various times advanced to account for the glacial epoch and other changes of climate which the geological record proves to have taken place. Island Life Or the Phenomena and Causes of Insular Faunas and Floras The evidence of the later movements of the land surface, and its rise and fall after the close of the glacial epoch, may still easily be traced. The Dawn of Canadian History : A Chronicle of Aboriginal Canada These were reduced to a single carryall and a frowsy horse whose rough winter coat recalled the aspect of his species in the period following the glacial epoch. Fennel and Rue To be sure, several skulls found in America have been supposed to belong to a time before the last glacial epoch. The Red Man's Continent: a chronicle of aboriginal America If the disturbance were great enough and of the right nature it might produce a glacial epoch. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The occurrence of a recent glacial epoch of great severity in the northern hemisphere is now universally admitted, but the causes which brought it on are matter of dispute. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Even more remarkable changes were effected, towards the end of, or since, the glacial epoch, over the region now occupied by the Levantine Mediterranean and the AEgean Sea. Hasisadra's Adventure The determination of a recent glacial epoch, however, soon offered a much more satisfactory solution, and one that is now universally accepted by men of science. The Malay Archipelago, the land of the orang-utan and the bird of paradise; a narrative of travel, with studies of man and nature — Volume 1 During the glacial epochs the interior of Asia was well watered and full of game which supplied the primitive human hunters. The Red Man's Continent: a chronicle of aboriginal America In a glacial epoch or in the arsis of an historic pulsation, storms are usually abundant and severe, the mean temperature is lower than usual, snow accumulates in high latitudes or upon lofty mountains. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Four hundred thousand years ago the excentricity was almost exactly the same as it is now, and it continually increased from that time up to the glacial epoch. Island Life Or the Phenomena and Causes of Insular Faunas and Floras "How can any one tell how long ago the last glacial epoch closed?" Boy Scouts in Mexico; or on Guard with Uncle Sam It will, however, naturally be objected that there is a wide expanse of sea between Java and the continent, which would have effectually prevented the immigration of temperate fortes of plants during the glacial epoch. The Malay Archipelago, the land of the orang-utan and the bird of paradise; a narrative of travel, with studies of man and nature — Volume 1 During the half million years more or less of his existence, cold, stormy, glacial epochs lasting tens of thousands of years have again and again been succeeded by warm, dry, interglacial epochs of equal duration. The Red Man's Continent: a chronicle of aboriginal America Suppose that for thirty or forty thousand years the sun cooled off enough so that the earth was as cool as during a glacial epoch. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z This view of the character of the last glacial epoch appears to correspond very closely with the facts adduced by geologists. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Objections fatal to one mind are futile to another, and as far as concerned the article, the matter ended there, although the glacial epoch remained a misty region in the young man's Darwinism. The Education of Henry Adams Consider the prodigious vicissitudes of climate during the pleistocene period, which includes the whole glacial epoch, and note how little the specific forms of the inhabitants of the sea have been affected. The Origin of Species by means of Natural Selection, 6th Edition Another very fertile source was Darwin's strong insistence upon the great influence which the last glacial epoch must have had upon the distribution of animals and plants. Darwin and Modern Science Geographers have lately been debating the reality of historic changes of climate in the same way in which geologists debated the reality of glacial epochs and stages. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Then came the long winter of the glacial epoch—perhaps of a succession of glacial epochs. A History of Science — Volume 3 Then he had entered gaily the door of the glacial epoch, and had surveyed a universe of unities and uniformities. The Education of Henry Adams From the kitchen regions upwards every one in the household came under her despotic sway and stayed there with the submissiveness of molluscs involved in a glacial epoch. The Toys of Peace, and other papers He stated, for instance, "that a Miocene Atlantis sufficiently explains the common distribution of animals and plants in Europe and America up to the glacial epoch." Darwin and Modern Science The relation of the stellar electrical hypothesis to the length of glacial epochs may be estimated from column C, in Table 5. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The anti-trades, which now are warmed by the Gulf Stream, would then blow as cold winds across the shores of western Europe, and in all probability a glacial epoch would supervene throughout the northern hemisphere. A History of Science — Volume 3 He was ignorant enough to think that the glacial epoch looked like a chasm between him and a uniformitarian world. The Education of Henry Adams It was thickly wooded in spots, and in the centre, near the big dam, which held back the waters of an immense artificial lake, was a great hill, evidently a relic of some glacial epoch. Tom Swift and His Giant Cannon, or, the Longest Shots on Record Indeed, we live on the border of the last glacial epoch, for with the closing of this period the long geologic past merges into the present. A History of Science — Volume 3 Perhaps we are even now approaching some star that will some day give rise to a period of climatic stress like that of the fourteenth century, or possibly to a glacial epoch. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z |
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