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Creator:: Oregon. Dept. of Geology and Mineral Industries, Frey, Robert W., Cowles, John G., and Mason, Ralph S.
Resource Type:: Journal
Full Text:: WASHINGTON AND OREGON Robert W. Frey* and John G. Cowles** Introduction Recently we described and

Creator:: Oregon. Dept. of Geology and Mineral Industries, Allen, John Eliot, 1908-, and Beaulieu, John D.
Abstract:: The geology of Oregon has become a jigsaw puzzle of moving parts set on a foundation of changing conditions as the crust and mantle undergo successively different manners of deformation through time. As more megahypotheses arise from increasingly sophisticated views of plate tectonics and from more detailed analyses of synoptic...
Resource Type:: Journal
Full Text:: R. W. deWeese, Portland, Chairman Leeanne MacColl, Portland H. Lyle Van Gordon, Grants Pass STATE

Creator:: Oregon. Dept. of Geology and Mineral Industries and Beaulieu, John D.
Abstract:: The plate tectonic history of Oregon is but one piece of a worldwide jigsaw puzzle encompassing much of geologic time. With the splitting of Pangaea in Mesozoic times, Oregon has occupied the leading edge of the North American Plate as it has impinged upon the ancestral oceanic East Pacific Plate....
Resource Type:: Journal
Full Text:: . Bristol, Rogue River, Chairman R. W. deWeese, Portland William E. Miller, Bend STATE GEOLOGIST R. E

Creator:: Oregon. Dept. of Geology and Mineral Industries and Allen, John Eliot, 1908-
Resource Type:: Journal
Full Text:: R. W. deWeese, Portland, Chairman Leeanne MacColl, Portland H. Lyle Van Gordon, Grants Pass STATE

Creator:: Oregon. Dept. of Geology and Mineral Industries and Beaulieu, John D.
Abstract:: Average annual losses caused by geologic hazards in Oregon are difficult to determine, owing to incomplete and scattered data. Preliminary considerations, however, indicate that losses to landslides may total between $4 million and $40 million per year. As many as nine persons have been killed by one landslide in Oregon...
Resource Type:: Journal
Full Text:: R. W. deWeese, Portland, Chairman Leeanne MacColl, Portland H. Lyle Van Gordon, Grants Pass STATE

Creator:: Oregon. Dept. of Geology and Mineral Industries and Allen, John Eliot, 1908-
Resource Type:: Journal
Full Text:: 'X X 'X 5Z X. X GOVERNING BOARD R. W. deWeese, Portland, Chairman Leeanne MacColl, Portland H

Creator:: Oregon. Dept. of Geology and Mineral Industries and Allen, John Eliot, 1908-
Resource Type:: Journal
Full Text:: ‘X 52. 'X' 52' 'X 5Z 'X' 52' 52' ")z' 5Z •X 52' 'X x 'X 'X 'X GOVERNING BOARD R. W. deWeese

Creator:: Oregon. Dept. of Geology and Mineral Industries and Beaulieu, John D.
Resource Type:: Journal
Full Text:: Portland, Oregon •SZ, x x x x x tir "5 x x x 5r .k GOVERNING BOARD • R. W. deWeese, Portland, Chairman

Creator:: Oregon. Dept. of Geology and Mineral Industries, Bodvarsson, Gunnar, Couch, Richard W., MacFarlane, William T., Tank, Rex W., and Whitsett, Robert Manning
Resource Type:: Journal
Full Text:: Portland, Oregon SZ 5t 5Z .>Z 9, 9, "5 'X 'X 5Z 5Z 9' 9' GOVERNING BOARD • R. W. deWeese, Portland

Creator:: Oregon. Dept. of Geology and Mineral Industries, Couch, Richard W., and Lowell, Robert P.
Abstract:: Seismically active areas exist within Oregon. The seismic history of Oregon is too short to be used as an accurate predictor of earthquake size, number, and distribution. Continual monitoring of earthquakes by seismograph stations during the next several decades should provide a more accurate estimate of the seismicity of Oregon....
Resource Type:: Journal
Full Text:: River, Chairman R. W. deWeese, Portland Harold Banta, Baker STATE GEOLOGIST R. E. Corcoran

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