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You searched for: Start Over Counties Remove constraint Counties Author Oregon. Dept. of Geology and Mineral Industries Remove constraint Author: Oregon. Dept. of Geology and Mineral Industries Subject Thematic Classification -- Land and People -- Earthquakes and Volcanoes Remove constraint Subject: Thematic Classification -- Land and People -- Earthquakes and Volcanoes Database ScholarsArchive Remove constraint Database: ScholarsArchive

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  • Lower to middle Eocene volcanic rocks -- Lower unit -- Upper unit -- Alkalic basalt -- Porphyritic augite basalt -- Feldspar-phyric basalt -- Picrite-basalt -- Tholeiitic basalt -- Chemical data -- Upper ...
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  • Introduction -- Distribution of basaltic tuff landforms -- Definition of terms -- Maar -- Dry maar or ubehebe -- Tuff cone or tuff ring -- Diatreme -- Maar or tuff ring field identification -- General ...
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  • An occurrence of vermiculitized biotite in northeastern Oregon / Lloyd W. Staples and Howard C. Brooks -- Thrust faulting in the Roseburg area, Oregon / Ewart M. Baldwin.
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  • The occurrence of Spencer sandstone in the Yamhill quadrangle, Oregon / H. G. Schlicker -- The Portland earthquake of November 5, 1962 / Peter Dehlinger and Joseph W. Berg, Jr.
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  • A brief history of the Oregon Portland Cement Co. / F. E. McCaslin -- The age of Clear Lake, Oregon / G. T. Benson -- Oregon's lost meteorites / Erwin F. Lange.
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  • Oregon's mineral industry zooms upward / Ralph S. Mason -- Crack-in-the-Ground, Lake County, Oregon / Norman V. Peterson and Edward A. Groh.
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