Geological Magazine, Band 2;Band 5;Band 15Henry Woodward Cambridge University Press, 1878 |
Inhalt
| 1 | |
| 40 | |
| 41 | |
| 49 | |
| 97 | |
| 100 | |
| 101 | |
| 116 | |
| 289 | |
| 336 | |
| 339 | |
| 354 | |
| 385 | |
| 407 | |
| 432 | |
| 433 | |
| 145 | |
| 164 | |
| 193 | |
| 221 | |
| 241 | |
| 254 | |
| 272 | |
| 288 | |
| 481 | |
| 514 | |
| 529 | |
| 532 | |
| 557 | |
| 559 | |
| 561 | |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
Ammonites appear axis basalt beds Beechey Island Boulder-clay boulders Brachiopoda Bridlington British Cambrian Carboniferous Chalk character Chloritic clay cliffs Coal-measures coast conglomerate Coral Cretaceous crust denudation deposits described Devon Devonian district Dublin earth England Eocene evidence fact fauna feet formation fossils fragments Geikie genera genus Geol Geological Geological Society Geological Survey geologists Glacial glaciers gneiss granite Graptolites gravel Greensand grits heat Hessle hills ice-sheet Ireland Island Journ lakes land limestone Lower Silurian marine mass miles Miocene moraine mountain North observations occur Old Red Sandstone Oolite origin Palæozoic paper period Permian plates Pliocene portion present probably Prof Professor Quart quartzites referred remarkable river rocks sand schists shales shells side Silurian slates species specimens stone strata structure surface teeth Tertiary thickness Triassic unconformably Upper valley volcanic
Beliebte Passagen
Seite 494 - So careful of the type?' but no. From scarped cliff and quarried stone She cries, 'A thousand types are gone; I care for nothing, all shall go. 'Thou makest thine appeal to me: I bring to life, I bring to death; The spirit does but mean the breath: I know no more.
Seite 159 - Why may not the sun have been composed of two such bodies ? And why may not the original store of heat possessed by him have all been derived from the concussion of these two bodies ? Two such bodies coming into collision with that velocity would be dissipated into vapour and converted into a nebulous mass by such an inconceivable amount of heat as would thus be generated ; and when condensation on cooling took place, a spherical mass like that of the sun would result.
Seite 158 - SUN. 479 we know rotates upon his axis once in about twenty-five days : and the notion has been entertained that the friction of the periphery of this wheel against something in surrounding space produces the light and heat. But what forms the brake, and by what agency is it held, while it rubs against the sun ? Granting, moreover, the existence of the brake, we can calculate the total amount of heat which the sun could generate by such friction. We know his mass, we know his time of rotation ; we...
Seite 203 - ... the time between the death and decay of the soft parts of the sea-urchin and the growth of the coralline to the full size which it has attained. If the decay of the soft parts of the sea-urchin, the attachment, growth to maturity, and decay of the Crania, and the subsequent attachment and growth of the coralline took a year ( which is a low estimate enough ) , the accumulation of the inch of chalk must have taken more than a year; and the deposit of a thousand feet of chalk must consequently...
Seite 387 - A continent ten times the size of Europe elevated two miles would do little more than bring London to the latitude of Edinburgh, or Edinburgh to the latitude of London. He must be a sanguine geologist indeed who can expect to account for the glaciation of this country, or for the former absence of ice around the poles by this means. We know perfectly well that since the glacial epoch there have been no changes in the physical geography of the earth sufficient to deflect the pole half a dozen of miles,...
Seite 418 - I hear rumours of the discovery of another archeeopteryx in the Solenhofen Slates, which is said to present the head in a much more complete condition than that in which it occurs on the magnificent slab now in the British Museum. As yet, I believe, the jaws have not had the matrix removed from them ; but should they prove to be armed with teeth, it will to me be a cause of satisfaction rather than surprise, as confirming an opinion which some fifteen years ago* I ventured to express, that this remarkable...
Seite 390 - ... case land at the equator might be nearly as well adapted as water for raising the temperature of the whole earth. But such is' not the case ; for the heat carried up by the ascending current at the equator is not employed in warming the earth, but is thrown off into the cold stellar space above.
Seite 87 - Pelargornit are excluded by the characters of their remains, the author concluded that the bones obtained by Mr. Shrubsole furnished indications of a new genus and species of flying birds, for which he proposed the name of Argillornis longipennis. He regarded it as probably a longwinged natatorial bird, most nearly related to Diomedea, but considerably exceeding the Albatross (D. exulans) in size.
Seite 388 - ... change in the axis of rotation. This conclusion has been further borne out by another mathematician, the Rev. E. Hill, in an article in the June number of the Geological Magazine. And Professor Haughton, in a paper read before the Royal Society, April 4th, and published in Nature, July 4th, entitled "A Geological Proof that the changes of climate in past times were not due to changes in the position of the Pole," has proved from geological evidence that the pole has never shifted its position...
Seite 393 - When the eccentricity of the earth-s orbit is at a high value and the northern winter solstice is in perihelion, agencies are brought into operation which make the southeast trade winds stronger than the northeast and compel them to blow over upon the northern hemisphere as far probably as the Tropic of Cancer. The result is that all the great equatorial waters of the ocean are impelled into the northern hemisphere, which thus, in consequence of the immense accumulation of warm water, has its temperature...