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The Geology and Petrography of Crater Lake National Park

Description: From introduction: The two papers published here refer practically to the whole region included in the National Park. The one. Part I, treats primarily of the geology, the development of the great volcano, Mount Mazama, and its collapse, which gave birth to Crater Lake; the other, Part II, deals with the petrography, and gives a special description of the various rocks occurring in the park.
Date: 1902
Creator: Diller, Joseph Silas & Patton, Horace Bushnell
Partner: UNT Libraries Government Documents Department
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Preliminary Report on the Ketchikan Mining District, Alaska, with an Introductory Sketch of the Geology of Southeastern Alaska

Description: From introduction: Since 1898 the United States Geological Survey has been carrying on a systematic investigation of the mineral resources of Alaska.As the northern mining districts of southeastern Alaska had already been the subject of an investigation by Dr. Becker in 1895,a and as the Ketchikan district was being rapidly developed, it was decided to spend the greater part of the short season in the Ketchikan district and in the fall to make a more hasty reconnaissance of the northern belt, i… more
Date: 1902
Creator: Brooks, Alfred Hulse
Partner: UNT Libraries Government Documents Department
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A Reconnaissance of the Northwestern Portion of Seward Peninsula, Alaska

Description: From introduction: In response to an urgent demand by the public, the Geological Survey, in 1900, undertook a topographic and geologic reconnaissance of the southern half of the Seward Peninsula.( The area mapped embraced the more important gold fields of the peninsula. The topographic map made in 1900 included the drainage of Bering Sea from Cape Darby to Port Clarence, the southern drainage of Grantley Harbor and Imuruk Basin, and the northern drainage of Norton Sound. A geologic reconnaissan… more
Date: 1902
Creator: Collier, Arthur J.
Partner: UNT Libraries Government Documents Department
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