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Creator:: Oregon. Dept. of Geology and Mineral Industries and Walker, George Walton, 1921-
Abstract:: Periodic violent eruptions from many different centers during Cenozoic time deposited vast quantities of pyroclastic material as ash-flow tuffs over most of Oregon, although the Coast Ranges and isolated patches elsewhere in the state appear to have been spared these recurring inundations. Eruptions occurred at different times throughout the Cenozoic,...
Resource Type:: Journal
Full Text:: OREGON* By George W. Walker U.S. Geological Survey, Menlo Park, California 94025. ABSTRACT Periodic

Creator:: Oregon. Dept. of Geology and Mineral Industries, Dole, Hollis M. (Hollis Mathews), Mowbray, George, Johnson, Samuel S., and Corcoran, Raymond E.
Abstract:: Everyone involved with the mining and petroleum industries, either directly or indirectly, is aware of the mounting concern by the general public with the possibly deleterious effects of mineral exploration and development on the environment. Oftentimes the outcry about "desecration of the land" is not based on actual knowledge of...
Resource Type:: Journal
Full Text:: appeared in an article by George Mow- bray, who is Director and principal of Stevenson & Kellogg, Ltd. of

Creator:: Oregon. Dept. of Geology and Mineral Industries, Walker, George Walton, 1921-, Bowen, Richard G., Shotwell, J. Arnold, Allison, Ira Shimmin, 1895-, Harlow, George Richardson, Ramp, Len, Maloney, Neil Joseph, Allen, John Eliot, 1908-, Dodds, Roland Kenneth, 1928-, Dodds, Betty, Lund, Ernest H., Wagner, Norman Spencer, Brooks, Howard C., Newton, Vernon C., Eubanks, Wallace, and Smith, John E.
Resource Type:: Journal
Full Text:: REGIONAL GEOLOGY OF SOUTH-CENTRAL OREGON By George W. Walker U. S. Geological Survey, Menlo Park

Creator:: Oregon. Dept. of Geology and Mineral Industries and Dodds, Betty
Abstract:: "It is the purpose of this paper, through a brief review of the history of Astoria, to construct a framework of the physical history of the city, to place each published geologist in his correct historical setting within the city, and to reestablish his locales so as to be presently...
Resource Type:: Journal
Full Text:: they surrender, they complied immediately. So, in 1813, American Fort Astor became English Fort George

Creator:: Oregon. Dept. of Geology and Mineral Industries, Hines, Pierre R., Couch, Richard W., Whitsett, Robert Manning, and Ramp, Len
Resource Type:: Technical Report
Full Text:: * Introduction In 1917 George Bellows, American artist (1882-1925), painted a picture of two men loading a wagon

Creator:: Oregon. Dept. of Geology and Mineral Industries and Staples, Lloyd William, 1908-
Resource Type:: Journal
Full Text:: expansion rather than shrinkage appears overwhelming to this writer. Mansfield and Ross (1935, p. 320

Creator:: Oregon. Dept. of Geology and Mineral Industries, Mercer, Basil W., Shaffer, Leslie Lloyd Donald, and Hashimoto, Steve T.
Resource Type:: Journal
Full Text:: agate or opal (Ross, 1941, p. 732; Staples, 1965). Activity and Prices At the present time in Oregon

Creator:: Oregon. Dept. of Geology and Mineral Industries, Thoms, Richard Edwin, 1935-, Smith, Harold Cramer, and Brogan, Phil F., 1896-
Resource Type:: Journal
Full Text:: Chance Creek - Yukon Territory 3. Washtucna Lake (Old Washington Lake) - Franklin County, Washington 4

Creator:: Oregon. Dept. of Geology and Mineral Industries, Mason, Ralph S., and Newton, Vernon C.
Resource Type:: Journal
Full Text:: vicinity, Oregon. 1960 * Johnson, George D., Geology of the northwest quarter Alvord Lake Three quadrangle

Creator:: Oregon. Dept. of Geology and Mineral Industries, Mason, Ralph S., Bowen, Richard G., Newton, Vernon C., and Beulieu, John D.
Resource Type:: Journal
Full Text:: . Pliocene diatoms: George W. Andrews, USGS, Washington, D.C. 2. French Glen and Lost Basin quadrangles

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