 ... enduring igneous rocks have preserved this range, while an average denudation of not less than one mile in vertical amount reduced all the adjoining region to a baselevel of erosion.  Appalachia - Seite 2051892Vollansicht - Über dieses Buch
 | Geological Society of America - 1895 - 608 Seiten
...mountains, about 25 miles east of Great Falls, having a height of 7,000 feet above the sea or about 3,000 feet above their base, are described by Davis as displaying...therefore similarly testifying of great denudation. The uplift at the beginning of the Tertiary era appears to have raised this portion of the plains to... | |
 | 1891 - 902 Seiten
...These mountains trend slightly west of north, and extend about forty miles with a width of fifteen miles, attaining an elevation of 11,178 feet above...amount was not less than 500 to 1,000 feet. Original epirogenic uplifting of these plains took place at the end of the Cretaceous period, or during the... | |
 | American Association for the Advancement of Science - 1892 - 604 Seiten
...Hlghwood mountains, about twenty-five miles east of Great Falls, Montana, having a height of 7.GOO feet above the sea or about 3,500 feet above their...therefore similarly testifying of great denudation. Reviewing this classification of mountain ranges for the purpose of discovering what elements of diversity... | |
 | American Association for the Advancement of Science - 1892 - 606 Seiten
...Highwood mountains, about twenty-five miles east of Great Palls, Montana, having a height of Y,GOO feet above the sea or about 3,500 feet above their...therefore similarly testifying of great denudation. Reviewing this classification of mountain ranges for the purpose of discovering what elements of diversity... | |
 | Geological Society of America - 1893 - 616 Seiten
...mountains, about 25 miles east of Great Falls, having a height of 7,liOO feet above the sea or about 3,000 feet above their base, are described by Davis as displaying...therefore similarly testifying of great denudation. The uplift at the Ijeginning of the Tertiary era appears to have raised this portion of the plains... | |
 | Newton Horace Winchell - 1894 - 466 Seiten
...a baselevel of erosion. The Highwood mountains, about 25 miles east of Great Falls, having a hight of 7,600 feet above the sea •or about 3,500 feet...therefore similarly testifying of great denudation. The uplift at the beginning of the Tertiary era appears to have raised this portion of the plains to... | |
 | Geological Society of America - 1895 - 700 Seiten
...mountains, about 25 miles east of Great Falls, having a height of 7,(>00 feet above the sea or about 3,000 feet above their base, are described by Davis as displaying...therefore similarly testifying of great denudation. The uplift at the beginning of the Tertiary era appears to have raised this portion of the plains to... | |
 | Jacob Vradenberg Brower - 1896 - 200 Seiten
...twenty-five miles east of Great Falls, having a height of 7.000 feet above the sea or alxmt !i,iXN) feet above their base, are described by Davis as displaying...therefore similarly testifying of great denudation. The epeirogenic or continental uplift at the beginning of the Tertiary era appears to have raised this... | |
 | Jacob Vradenberg Brower - 1897 - 282 Seiten
...twenty-five miles east of Great Falls, having a height of ~.(\(*> feet above the sea or about .'(,500 feet above their base, are described by Davis as displaying...same structure, and therefore similarly testifying at great denudation. The epeirogenic or continental uplift at the beginning of the Tertiary era appears... | |
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