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Erosion

 Subject
Subject Source: Library of Congress Subject Headings
Scope Note: Created For = NAHSTE

Found in 4 Collections and/or Records:

Correspondence from Emmanuel De Margarie, 1883-1907

 Sub-Series
Identifier: Coll-74/12/15
Scope and Contents The Correspondence from Emmanuel De Margarie sub-series consists of:
  1. 18 letters, chronologically arranged (1883-1907)
Dates: 1883-1907

Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton, 21 July 1884

 Item
Identifier: Coll-74/11/5/16
Scope and Contents Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton telling him that he is undertaking field work in New Mexico. He is concentrating on the plateau country aided by good topographic maps of the region. He tells Geikie that there are landforms and cliffs similar to those in Utah and Arizona with exposures of Triassic, Permain and Cretaceous strata. These are overlain with evidence of volcanic activity, ancient basalt of 50-200 feet depth on the plateau. Young basalt, in vast lava...
Dates: 21 July 1884

Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton, 17 January 1881

 Item
Identifier: Coll-74/11/5/6
Scope and Contents Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton, thanking him for his articles on weathering and postulating that the Grand Canyon was formed in this manner, and that he is preparing a section concerning this for Geikie's manual. He recommends William Henry Holmes' topographical drawings of the Grand Canyon and reports that photolithographs are being prepared. He gives details of the depths of the individual geological stratifications which can be observed at the Grand Canyon....
Dates: 17 January 1881

Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton, 16 March 1881

 Item
Identifier: Coll-74/11/5/8
Scope and Contents Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton enclosing copies of topographical drawings of the Grand Canyon by William Henry Holmes. He pontificates over what text he will eventually send to accompany the drawings and asserts that the Grand Canyon was formed during the Pliocene and the Quaternary geological periods rather than by erosion during the Tertiary period. He promises to forward copies of Holmes' drawings of the Kaibab region shortly. He reports that John W Powell...
Dates: 16 March 1881