Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 70American Philosophical Society, 1931 |
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Сторінка 18
... North American conti- nent of that time stood well above sea - level . This idea is based mainly on the fact that ... North American land - mass during the Jurassic Period , Jurolaurentia . The eastern margins of this land are utterly ...
... North American conti- nent of that time stood well above sea - level . This idea is based mainly on the fact that ... North American land - mass during the Jurassic Period , Jurolaurentia . The eastern margins of this land are utterly ...
Сторінка 51
... North America , they are almost unknown north of California . At Mt. Jura , the Foreman formation which is mainly a grey argillite with quartzite beds yields : " Perisphinctes " sp . , " Binatisphinctes " sp . " Trigonia " aff ...
... North America , they are almost unknown north of California . At Mt. Jura , the Foreman formation which is mainly a grey argillite with quartzite beds yields : " Perisphinctes " sp . , " Binatisphinctes " sp . " Trigonia " aff ...
Сторінка 65
... North America which , in the Upper Cretaceous , brought the east coast inward , across the sunken Appalachia , to the general region of the present continental margin . The Cretaceous Marine Invasions . In the south , an in- vasion from ...
... North America which , in the Upper Cretaceous , brought the east coast inward , across the sunken Appalachia , to the general region of the present continental margin . The Cretaceous Marine Invasions . In the south , an in- vasion from ...
Зміст
NonLiving and Living Matter BY FRANCIS X DERCUM | 1 |
Its Bearing on the Develop | 15 |
Eye End of Telescope | 35 |
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Alaska alpha particles America on Lambert's American Ammonites anions Argovian atom Aucella beta particles British Columbia Bull Bulletin C. H. Crickmay California Callovian Canada cell chemical cm./sec continuous Cretaceous curve cylinder deposits diffusion early electric electrons engineering Equid erythrocyte evidence F. H. McLearn fact faunas formation fossils G. C. Martin Geanticline Geol geosyncline growth Harrison Lake hemolysis Hindu Hyatt India indicate J. B. Reeside J. S. Diller joules Kimmeridgian Lambert's Azimuthal Projection living magnetic Map number Maps by permission McLearn Meek membrane Mesozoic methods Middle Jurassic mobilities molecules nationality North America nucleus occur orogeny Pacific paleogeography particles permeability Pleistocene positive ions pramaxwells present problem question railroads rationalised region sediments Shakespeare shale Sierra Nevada snow Sonninian southern species substances tetra ethyl lead Tithonian Triassic Twelve Tables U. S. Geological Survey United Unrat Upper Jurassic volcanics