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Example sentences for "geologic"

Lexicographically close words:
geographically; geographies; geographique; geography; geoid; geological; geologically; geologising; geologist; geologists
  1. So the providing of coal for fuel in the geologic ages may be regarded by different persons in the light either of a general or of a special providence.

  2. So we can find an adumbration of morality even in the predatory and internecine warfare of the geologic ages.

  3. We may believe that God arranged even the geologic history to correspond with the foreseen fact of human apostasy (cf.

  4. The race of the brachiopods goes back to the beginning of the geologic record.

  5. Geologic Ages Represented in the United States--Estimate of geologic time.

  6. But if the theory of isostasy is true, one would at first say that there could be no great accumulation through a geologic period of stresses which would finally yield in the shape of folded mountain ranges.

  7. If there is inequality in the balance and struggle of these contending forces, the great periods or acts in the geologic drama might thus be marked off as Chamberlin suggests.

  8. But only little grains of sand and a vast multitude of little drops of water, active through geologic ages, were the agents that wrought this stupendous spectacle.

  9. Back in geologic time we had a ruminant with four horns, two on the nose and two on the crown, and they were real, permanent, bony growths.

  10. In our geologic time there is, in this circuit of the waters, more that favors life than hinders it, else, as I so often say, we should not be here.

  11. Shaler finds that organic development in the Northern Hemisphere is more advanced, by a whole geologic period, than in the Southern, with Europe at the head and Australia the greatest laggard.

  12. Rock begat rock, undoubtedly, and the aerial forces played the chief part, but the origin of each kind is hidden in the abyss of geologic time, as is that of the animal species.

  13. Has the course of life up through geologic time been in any way like this?

  14. There is no variation during geologic time of these primordial living organisms.

  15. Our vast industries have their root in the geologic history of the globe as in no other past age.

  16. The record of the rocks reveals to us the relation of species, and their succession in geologic time, but gives no hint of their origin.

  17. The meteorologist needs no geologic evidence that the storm track was shoved equatorward by the growth of the ice sheet, for he observes a similar shifting whenever a winter's snow cap occupies part of the normal storm tract.

  18. All these changes involve a relatively rapid swing from one extreme to another, while an upheaval of a continent, which is at best a slow geologic process, apparently cannot be undone for a long, long time.

  19. Barren: Rhythms and the Measurement of Geologic Time; Bull.

  20. On the whole, the amount of land in the middle and high latitudes of the northern hemisphere appears to have increased during geologic time.

  21. In Table 2 the next type of climatic sequence is geologic oscillation.

  22. There is evidence that during geologic history the area of the lands in middle and high latitudes, as well as in low latitudes, has changed radically.

  23. During many geologic epochs a larger portion of the earth was covered with water than at present.

  24. The retardation would occur slowly, and would take place chiefly during the long quiet periods of geologic history, while the acceleration would occur rapidly at times of diastrophic deformation.

  25. Diagram showing the times and probable extent of the more or less marked climate changes in the geologic history of North America, and of its elevation into chains of mountains.

  26. To begin with the earth's interior--its loss of heat appears to be an almost negligible factor in explaining either secular progression or geologic oscillation.

  27. In the same way, on the numerous paleogeographic maps of North America, most paleogeographers have shown fairly extensive lands south of the latitude of the United States during most of the geologic epochs.

  28. These things, as Schuchert[60] says, can only mean that Knowlton is right when he states that "climatic zoning such as we have had since the beginning of the Pleistocene did not obtain in the geologic ages prior to the Pleistocene.

  29. The geologic structure of the Sonoran province is complex and not well understood.

  30. The geologic conditions are such that the ochers are undoubtedly abundant; but it is probable that the gypsum is uncommon and confined to a remote locality or two, and that the dumortierite is rare and scanty here as elsewhere.

  31. Its rate is measured by the erosion of the Grand Canyon of the Colorado and other gorges; and its dates, in terms of the geologic time-scale, run at least from the middle Tertiary to the present, or throughout the Neocene and Pleistocene.

  32. The geologic structure also determines the character of the soil with exceptional directness, since the dryness of the air and the dearth of vegetation reduce rock decay to a negligible quantity.

  33. The remaining astronomic rhythm of geologic import is the variation of eccentricity.

  34. The earliest computations of geologic time, as well as the majority of all such computations, have followed the line of the most familiar and fundamental of geologic processes.

  35. Erosion and deposition have been used also, in a variety of ways, to compute the length of very recent geologic epochs.

  36. The next imposed rhythm of geologic importance is the year.

  37. Manifestly the earth can not have been ready for habitation before the passage of that epoch, and so the computation yields a superior limit to the extent of geologic time.

  38. Few of these original rhythms have been used in computations of geologic time, and it is not believed that they have any positive value for that purpose.

  39. The geologic scroll bears many separate lines, one for each district where rocks are well displayed, but these are not independent, for they are labeled by fossils, and by means of these labels can be arranged in proper relation.

  40. The studies of these several rhythms, while they have led to the computation of various epochs and stages of geologic time, have not yet furnished an estimate either of the entire age of the earth or of any large part of it.

  41. Assuming that the whole globe is solid and rigid, and that the geologic record could not begin until that condition had been attained, there could not have been great checking of rotation since consolidation.

  42. In geologic studies we judge the past from the present, and if that be not a trustworthy method of reasoning, all the conclusions of geologists are as worthless as dreams.

  43. I suppose that the same laws have prevailed from the beginning of the geologic periods.

  44. Then the force so long pent up and held in suspense is set free; the stored-up heat of the geologic ages is brought out for use.

  45. Moreover, as yet we have only the vaguest idea of the duration of even modern geologic time; good observers vary as to whether a given period covers hundreds of thousands or only tens of thousands of years.

  46. Yet when expressed in geologic terms it was but of yesterday.

  47. Together with these great beasts belonging to stocks that in recent geologic time had immigrated hither from the Old World and from the southern half of the New World was another huge beast of remote native ancestry.

  48. Of the general paleontological facts, of the general aspects of the various faunas in various parts of the world, during some roughly indicated period of geologic time, we may be reasonably sure.

  49. The former is the one movement which runs ever in the same direction through all geologic time.

  50. The idea of the progressive development of the earth in its greater features throughout all geologic time by the action of forces resident in the earth itself preceded the acceptance of the evolution of organic forms.

  51. Crust movements were irregularly oscillating to such a degree that in the course of geologic history sea and land frequently and completely changed places.

  52. The latter are the most common and conspicuous now and in all previous geologic time.

  53. Suffice it to say now that geologic thought in this regard has passed through three stages--catastrophism, uniformitarianism, and evolutionism.

  54. To the pre-geologic mind mountains are the type of permanence and stability.

  55. It is worth while to remember that Beauty is no outcome of a long period of evolution; it is no late event in the geologic history of the world.

  56. What motive would there be, then, for the inconspicuous flowers of the early geologic periods to convert themselves into the brilliant corollas of our day?

  57. For this reason models colored to indicate geologic formations should always be accompanied by duplicates representing topography only, colored realistically, if possible, and without lettering.

  58. Well-defined lines other than those pertaining to the model itself, such, for example, as those used to define the boundaries of geologic formations, should not be allowed upon a model when it is desired to bring out all the relief.

  59. You had to get up in the air to clear whatever upheavals and subsidences there had been through geologic ages.

  60. We know that there was, in some geologic ages in the past, a great deal more uranium than we have today.

  61. The southwestern corner of Wisconsin is a geologic curiosity.

  62. According to some exceptionally good geological observers, this is probably due to the fact that in a remote geologic past the ocean sent in an arm from the south, between the Plan Alto and what is now the Andean chain.

  63. And as the course of human history has flowed in an unbroken stream along quiet reaches of slow change and through periods of rapid change and revolution, so with the course of geologic history.

  64. Geologic time divisions compared with those of human history.

  65. Assuming also that life forms have always changed as they are changing at present, we come to realize something of the immensity of geologic time required for the evolution of life from its earliest lowly forms up to man.

  66. What remains of these rock systems after the denudation of all later geologic ages is enormous.

  67. These crude divisions would be of much value if, as in the case of geologic time, we had no exact reckoning of human history by years.

  68. The change in organisms throughout geologic time has been a progressive change.

  69. The great length of geologic time inferred from the slow change of species.

  70. Tracing the lines of descent of various animals and plants of the present backward through the divisions of geologic time, we find that these lines of descent converge and unite in simpler and still simpler types.

  71. The molten rock which has been driven from the earth's interior to within the crust or to the surface during geologic time must be reckoned in millions of cubic miles.

  72. In the embryonic stages of its growth the individual passes swiftly through the successive stages through which its ancestors evolved during the millions of years of geologic time.

  73. On the basis of these few fossils we may be confident that the strata in which they were found in the antarctic region were laid in the same period of geologic time as were the Cretaceous rocks of the United States and Canada.

  74. The last 3 or 4 million years of geologic history have witnessed the excavation of much of the Tertiary sedimentary fill from the Fossil Basin.

  75. It is hoped that this brief story of the geologic history of Fossil Butte National Monument will give the reader some appreciation of the geologic complexity not only of the monument itself but of the surrounding area as well.

  76. These lakes developed in intermontane basins that were created as a result of the geologic events that formed the Rocky Mountains.

  77. Varying climatic and geologic conditions were responsible for the changes in lake size and distribution.

  78. Each time a geologist studies an area more geologic data and more evidence become available and our interpretations become a little more accurate.

  79. A substantial break or gap in the geologic or stratigraphic record.

  80. Just that divergence of many races from one race, which we inferred must have been continually occurring during geologic time, we know to have occurred during the pre-historic and historic periods, in man and domestic animals.

  81. The geologic story of the canon's origin is too far beyond our comprehension.

  82. When the geologic movement was in process which created the continent, with the Rocky Mountains for its backbone, this entire region became a plateau, vastly higher than at present, with its greatest elevation far to the north.

  83. Then think that this is the task the Colorado River and other geologic forces have accomplished, and pause to wonder how long it took to complete the process!

  84. I admit it does not correspond with the geologic record in the way commonly asserted; yet it has a very remarkable relation to that sequence.

  85. These earthquake scenarios represent the largest magnitude events estimated on the basis of a variety of geologic assumptions.

  86. Information on past earthquakes must be gleaned from the geologic record and therefore, presents a picture of past seismicity that is incomplete and not yet fully deciphered.

  87. The appropriateness of these assumptions depends on the intent of the analysis and the state of geologic knowledge.

  88. Geologic evidence also indicates other faults capable of generating major earthquakes in other locations near urban centers in California, including San Francisco-Oakland, the immediate Los Angeles region, and San Diego.

  89. The development of such criteria commonly requires detailed analyses of the site and its immediate geologic environment beyond the scope of this report.

  90. Why should the system of classification coincide with the order of geologic occurrence, and this with the series of embryonic stages?

  91. They had fine structure and powers; and yet during the later geologic periods they have scarcely advanced a step, and are now apparently at a standstill.

  92. Now it is a most remarkable circumstance that, viewed on the great scale, living beings have differed so little throughout all geologic time that there is no sub-kingdom and no class wholly extinct or without living representatives.

  93. Evidently, they are the lingering survivors of some former geologic period, and no doubt will soon become extinct.


  94. The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "geologic" in a variety of sentences. We hope that you will now be able to make sentences using this word.

    Some related collocations, pairs and triplets of words:
    geologic history; geologic time; geological evidence; geological history; geological science; geological structure; geological time; geologically speaking