Man and the Glacial PeriodD. Appleton, 1892 - 385 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 32
Pagina 109
... shells have been found from eight to twelve feet below a surface of till ; and Dr. Robert Bell reports the occurrence of limited deposits of lignite between layers of till , far to the north- west , in Canada , and even upon the ...
... shells have been found from eight to twelve feet below a surface of till ; and Dr. Robert Bell reports the occurrence of limited deposits of lignite between layers of till , far to the north- west , in Canada , and even upon the ...
Pagina 113
... shells at a considerable elevation on the divide along the Isthmus of Panama , between the Atlantic and Pacific Oceans . Of this we shall speak more fully in a later chapter . Fixing our thoughts upon what is known as the Lau- rentian ...
... shells at a considerable elevation on the divide along the Isthmus of Panama , between the Atlantic and Pacific Oceans . Of this we shall speak more fully in a later chapter . Fixing our thoughts upon what is known as the Lau- rentian ...
Pagina 138
... shell - bearing drift extending up to the water - shed on one side of a lofty range of hills , a submergence of the land to a depth of 1,400 feet has been postulated ; leaving for independent explanation the fact , that the opposite ...
... shell - bearing drift extending up to the water - shed on one side of a lofty range of hills , a submergence of the land to a depth of 1,400 feet has been postulated ; leaving for independent explanation the fact , that the opposite ...
Pagina 142
... shells ; while at about the same horizon plant remains have been found , including such high northern species as Salix polaris and Betula nana . " The glacial deposits do not , in my opinion , contain anywhere in England or Wales a ...
... shells ; while at about the same horizon plant remains have been found , including such high northern species as Salix polaris and Betula nana . " The glacial deposits do not , in my opinion , contain anywhere in England or Wales a ...
Pagina 143
... shells in the drift . The facts awaiting explanation are the occurrence in the boulder - clays of Glamorganshire , at altitudes up to four hundred feet , of flints , and of igneous rocks somewhat resembling those of the Archæan series ...
... shells in the drift . The facts awaiting explanation are the occurrence in the boulder - clays of Glamorganshire , at altitudes up to four hundred feet , of flints , and of igneous rocks somewhat resembling those of the Archæan series ...
Alte ediții - Afișează-le pe toate
Man and the Glacial Period George Frederick Wright,Henry Williamson Haynes Vizualizare completă - 1892 |
Man and the Glacial Period George Frederick Wright,Henry Williamson Haynes Vizualizare completă - 1892 |
Termeni și expresii frecvente
accumulation Alps animals basin boulder-clay boulders cave channel clay cliffs coast continuous County Creek depth distance drainage drift east elevation England erosion Europe evidence extending facts farther fiords flints flow formed Fort Snelling Geological glacial boundary glacial deposits Glacial epoch glacial ice glacial motion Glacial period glaciated area glaciated region glaciers gorge granite gravel Greenland height hills hundred feet Ice age ice-front ice-movement ice-sheet implements Irish Sea island kettle-holes Lake Lake Agassiz Lake Michigan Lake Ontario land latitude lava loess lower marine marked mass melting miles Mississippi motion movement névé northern northward numerous occur Ohio outlet palæolithic pebbles phenomena Pliocene portion preglacial present Professor Rhône Rhône Glacier ridges River rocks sand shells shore side Somme southern southward species square miles strata streams subsidence surface terminal moraine terraces Tertiary Thenay theory thick thousand feet tion transported tributary upper valley vicinity western