The American Geologist, Volumes 35-36Geological Publishing Company, 1905 - Geology Includes section "Review of recent geological literature." |
Contents
| 1 | |
| 23 | |
| 27 | |
| 31 | |
| 34 | |
| 50 | |
| 62 | |
| 94 | |
| 256 | |
| 263 | |
| 291 | |
| 301 | |
| 312 | |
| 318 | |
| 324 | |
| 342 | |
| 113 | |
| 123 | |
| 131 | |
| 142 | |
| 152 | |
| 167 | |
| 168 | |
| 176 | |
| 185 | |
| 197 | |
| 202 | |
| 221 | |
| 236 | |
| 243 | |
| 247 | |
| 253 | |
| 356 | |
| 370 | |
| 376 | |
| 385 | |
| 398 | |
| 401 | |
| 49 | |
| 57 | |
| 65 | |
| 83 | |
| 104 | |
| 112 | |
| 122 | |
| 134 | |
Other editions - View all
Common terms and phrases
Amer AMERICAN GEOLOGIST artesian basin beds Bridger Bull canyon cent channel chert clay coal coast continental continental shelf country rock creek Cretaceous crinoid Croix crystals Dalles deep deposits depth described diabase dikes drift east erosion fauna feet feldspar felsite fjords formation fossils genus Geol Geological Survey GEOLOGIST glacial gneiss gorge grain granite gypsum hight igneous inches Jour known laccolith lake land lepidolite lime limestone loess lower mass metres miles minerals mining Minnesota Miocene mountains Museum natural nearly nebula Ohio origin orthoclase paper Pembina Peter sandstone planetesimals plates Pleistocene porphyry portion present probably Prof professor quartz region river rock Science shales shelf side siphuncle slope species specimen strata surface temperature Tennessee thickness tion tourmaline Troost University upper valley veins writer York zone
Popular passages
Page 92 - ... 1839, and in his Eighth Report, in 1845, but in the series of reports by Troost the subject is not given the prominence that has been accorded it by later investigators. Troost, G., Third Geological Report to the Twenty-first General Assembly of the State of Tennessee Oct., 1835, p. 3.
Page 205 - Under the typical form of the planetesimal hypothesis it is assumed that the parent nebula of the solar system consisted of innumerable small bodies, planetesimals, revolving about a central gaseous mass, somewhat as do the planets to-day.
Page 214 - The present difference between the radii of the oceanic basins and the radii of the continental platforms is scarcely 3 miles, on the average; so that If the continental segments be assumed to be in approximate hydrostatic equilibrium with the oceanic segments to-day, as seems highly probable, the selective weathering process brought about a difference in depression of only 1 mile in 500 or 600 miles, or about one-fifth of 1 per cent. * * * Not only is the evolution of the great abysmal basins and...
Page 105 - Very commonly it impregnates the waters, both of streams and springs, making them unfit for use. At Hunters Hot Springs, on the north bank of Yellowstone River, about 20 miles east of Livingston, the hot waters are now depositing gypsum and the old hot spring fissures are filled by a mass of gypsum and stilbite.
Page 207 - Within the area of their disks, also, the distribution is irregular, as it is in the solar system — a fact too much overlooked by reason of our predilection for symmetry, under the influence of the symmetrical Laplacian conception. All of the more familiar spiral nebulae have dimensions that vastly transcend those of the solar system, and they cannot be taken as precise examples of the solar evolution. * * * It is to be hoped, however, that the present rapid progress In the perfection of instruments...
Page 75 - Pennsylvania, — a position he held until 1872, when the increased executive duties in connection with the Geological Survey of the Territories induced him to resign it.
Page 60 - A theory of origin for the Michigan gypsum deposits. Am. Geol., vol. 34, pp. 378-387, 1904. Describes the general geology of lower Michigan and the geological history of the Michigan basin, and discusses the conditions under which the gypsum deposits of this area were produced.
Page 141 - Osteology of Haplocanthosaurus, with description of a new species, and remarks on the probable habits of the Sauropoda and the age and origin of the Atlantosaurus beds.
Page 322 - He was secretary of Section E (Geology and Geography) of the American Association for the Advancement of Science from 1907 to 1911.
Page 206 - Keeler, and this form particularly characterizes the smaller nebulae recently brought to knowledge by improved instruments and manipulative skill. These newly discovered nebulae are estimated to number at least ten times the whole number previously known. From the superior number of spiral nebulae it is a safe inference that their peculiar forms represent some prevalent process in celestial dynamics This is in itself a reason why research should turn to them, by preference, for the origin of the...