The Journal of Geology, Volumen13Thomas Chrowder Chamberlin University of Chicago Press, 1905 Vols. for 1893-1923 includes section: "Reviews." |
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Otras ediciones - Ver todas
Términos y frases comunes
Arkansas Atlantosaurus baselevel basin beds bones Burlington character clay Cliffwood conglomerate Corniferous Cretaceous Croix cycle deposits depression described developed dikes Dillard district drainage drift east Eocene erosion Eryops evidence fauna feet foramen formation fossils genus Geologist glacial glacier glauconite gorge grains granite gravels gray Hallopus hanging valleys horizon Huronian igneous intercentrum intrusion Kinderhook laccolith Lake Creek later layers limestone lower magnetite marls mass material Merchantville miles mineral moraine mountain Myrtle occur Ohio olivine Oltenia original peneplain plain Plate pleurocentra portion posterior present probably Professor quadrangle quarry region Report ridge river rocks salt sand sandstone Sarmatian Scaphites schists sediments serpentine shale shell side skull slopes species specimens strata streams surface teeth Tennessee terrace Tertiary theory of capture thickness tion Tortonian U. S. Geological Survey unconformity undet upper valley vertebræ Walden Walden Ridge
Pasajes populares
Página 655 - Preliminary Report on the Geology of the Arbuckle and Wichita Mountains, in Indian Territory and Oklahoma.
Página 57 - And they remark that the shocks were clearly distinguishable into two classes; those in which the motion was horizontal, and those in which it was perpendicular.
Página 89 - REPORT OF THE SPECIAL COMMITTEE FOR THE LAKE SUPERIOR REGION To C. Willard Hayes, Robert Bell, Frank D. Adams, and Charles R. Van Hise, general committee on the relations of the Canadian and the United States Geological Surveys.
Página 509 - Renard, the chambers become filled with muddy sediment, and "if we admit that the organic matter inclosed in the shell, and in the mud itself, transforms the iron in the mud into sulphide, which may be oxidized into hydrate, sulphur being at the same time liberated, this sulphur would become oxidized into sulphuric acid, which would decompose the fine clay, setting free colloid silica, alumina being removed in solution; thus we have colloid silica and hydrated oxide of iron in a state most suitable...
Página 387 - As the coalescence of basins and the integration of stream systems progress, the changes of local base-levels will be fewer and slower and the obliteration of the uplands, the development of graded piedmont slopes, and the aggradation of the chief basins will be more and more extensive. The higher parts of the piedmont slopes may be rock floors, thinly and irregularly veneered with waste, as has been described by Keyes for certain basins (bolsons) in New Mexico ; here, as well as upon the aggraded...