The Journal of Geology, Volume 1; Volumes 13-14University of Chicago Press, 1893 - Electronic journals Vols. for 1893-1923 includes section: "Reviews." |
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Page 102
... Triassic Beds at Fairplay , Col. , Samuel H. Scudder . 2 pp . Am . Jour . Sci . , Jan. , 1891 . -Some Abnormal and Pathologic Forms of Fresh Water Shells from the Vicinity of Albany , N. Y. 2 pp . , 2 pl . - 36th Rep . N. Y. State Mus ...
... Triassic Beds at Fairplay , Col. , Samuel H. Scudder . 2 pp . Am . Jour . Sci . , Jan. , 1891 . -Some Abnormal and Pathologic Forms of Fresh Water Shells from the Vicinity of Albany , N. Y. 2 pp . , 2 pl . - 36th Rep . N. Y. State Mus ...
Page 180
... Triassic is the name of another system and records the three - fold division of the system of rocks to which it was applied ; and Devonian , the name of another , reminds us of the county in England in which its rocks were first named ...
... Triassic is the name of another system and records the three - fold division of the system of rocks to which it was applied ; and Devonian , the name of another , reminds us of the county in England in which its rocks were first named ...
Page 206
... Triassic up to the time of the folding in late Tertiary time . The folds have a general east - northeast trend , and were formed by pressure exerted from the southeast along the whole line of the Jura folds . The folds are the strongest ...
... Triassic up to the time of the folding in late Tertiary time . The folds have a general east - northeast trend , and were formed by pressure exerted from the southeast along the whole line of the Jura folds . The folds are the strongest ...
Page 278
... Triassic on the map accompanying the Survey of the Forti- eth Parallel . ' As shown in the section given above they are ' U. S. Geol . Exploration of the Fortieth Parallel ; Clarence King , Geologist in charge ; Vol . I. , Systematic ...
... Triassic on the map accompanying the Survey of the Forti- eth Parallel . ' As shown in the section given above they are ' U. S. Geol . Exploration of the Fortieth Parallel ; Clarence King , Geologist in charge ; Vol . I. , Systematic ...
Page 283
... Triassic system of Bronn , followed by the ( 7 ) Jurassic system of Brongniart . To the next system the name ( 8 ) Cretaceous was applied by Fitton . The next system still re- tains the name ( 9 ) Tertiary , of Cuvier and Brongniart ...
... Triassic system of Bronn , followed by the ( 7 ) Jurassic system of Brongniart . To the next system the name ( 8 ) Cretaceous was applied by Fitton . The next system still re- tains the name ( 9 ) Tertiary , of Cuvier and Brongniart ...
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Common terms and phrases
anorthosite Archean augite basal basin beds belt boulders calcareous Cambrian carbonate of lime carbonic acid Carboniferous character chemical coal coast conglomerate Cretaceous crystalline crystals deposits diabases diallage drainage drift eastern englacial erosion eruptive evidence exhibit fact feet feldspar folding formation fossils gabbro Geol Geological Survey geologists glacial epoch glacier gneiss granite gravels hornblende Huronian ice-sheet igneous iron and manganese Jour Keweenawan Lake Superior later Laurentian lavas limestone lower magma manganese mass material metamorphism miles mineral moraine mountain observations occur ocean olivine origin oxide paleolithic Paleozoic phenomena plagioclase porphyritic portion pre-Cambrian present probably Professor pyroxene quartz quartzite region rhyolites ridges Riga Schist river rocks sand sandstone schist sections sedimentary sediments sheet Silurian slope specimens strata streams structure surface terrace Tertiary theory thickness tion unconformity upper valley volcanic
Popular passages
Page 175 - He was a fellow of the royal societies of London and Edinburgh, and a member of some other learned bodies.
Page 266 - The pieces of limestone are so markedly different from the calcareous bed enclosing them that they cannot be confounded with it. The rock fragments are of unequal distribution in the deposit, both laterally and vertically, sometimes composing almost half of it, and sometimes being almost entirely absent. They vary from a fraction of an inch to several inches in diameter and are indiscriminately mixed.
Page 404 - The geographic development of the eastern part of the Mississippi drainage system. Am. Geol., vol. xi, 1893, pp.
Page 611 - Agency of organisms; 2". Chemical precipitation; 3. By mechanical methods. It is the general opinion of geologists that limestone rocks are the result almost entirely of the consolidation of lime removed from the sea water through the agency of life, and that they consist of the remains of foraminifera, crinoids, corals, etc., or their fragments, embedded in a more or less crystalline matrix resulting from subsequent alteration of the original deposits. This, however, has been seriously questioned....
Page 201 - The Crocodilian Remains found in the Elgin Sandstones, with remarks on the Ichnites of Cummingstone.
Page 432 - The non-feldspathic intrusive rocks of Maryland and the course of their alteration.
Page 609 - I obtain 113 tons as the total amount of matter in solution discharged into the Atlantic basin per annum from each square mile of area drained into it. Of this 49 tons consist of carbonate of lime and 5.5 tons of sulphate and phosphate of lime.4 Mechanical sediments.
Page 409 - Price 10 cents. 65. Stratigraphy of the Bituminous Coal Field of Pennsylvania, Ohio, and West Virginia, by Israel C. White. 1891. 8". 212pp. 11 pi. Price 20 cents. 66. On a Group of Volcanic Rocks from the Tewan Mountains, New Mexico, and on the occurrence of Primary Quartz in certain Basalts, by Joseph Paxson Iddings.
Page 607 - Our knowledge of the conditions north of the 55th parallel is limited by the want of accurate geologic data. If Cambrian and Carboniferous rocks were not deposited in the Mackenzie river basin and also on the eastern side of the area now covered by Cretaceous strata, the inference is that during Cambrian and Carboniferous time there was a land area to the east and north of the northern Cordilleran sea that may have been tributary to the latter.
Page 625 - It is correlated with the Bow River series, which contains, in the upper portion, the lower Cambrian fauna. The presence of these calcareous beds indicates a slower rate of deposition than we have estimated for the lower portion of the Cambrian...