Showing 1 - 13 results of 13 for search '', query time: 0.15s Refine Results
  1. 1
    A contribution to the petrography of the John Day Basin.
    by Calkins, Frank Cathcart, 1878-
    Published 1902
    Book
  2. 2
    Geology of a Miocene ignimbrite layer, John Day formation. eastern Oregon.
    Book
  3. 3
    Geology of the igneous complex at Tincup Peak, Kalmiopsis Wilderness Area, southwestern Oregon /
    by Gray, Floyd
    Published 1980
    Government Document Book
  4. 4
    Index to K-AR age determinations for the State of Oregon /
    Published 1982
    Government Document Book
  5. 5
    Stratigraphy and petrology of the late cretaceous rocks near Hilt and Hornbrook, Siskiyou County, California, and Jackson County, Oregon /
    by Elliott, Monty Arthur, 1944-
    Published 1982
    Thesis Book
  6. 6
    Obsidian studies in Oregon : an introduction to obsidian and an investigation of selected methods of obsidian characterization utilizing obsidian collected at prehistoric quarry sites in Oregon /
    by Skinner, Craig Eugene
    Published 1983
    Book
  7. 7
    The geology and petrography of Crater lake national park /
    View full-text version online through Southern Oregon Digital Archives.
    Government Document Book
  8. 8
    Petrology of the welded tuff of Devine Canyon, southeastern Oregon /
    by Greene, Robert C.
    Published 1973
    Government Document Book
  9. 9
    Petrography of the Rattlesnake Formation at the type area, central Oregon /
    by Enlows, Harold E.
    Published 1976
    Book
  10. 10
    Low-temperature reaction zones and alpine ultramafic rocks of California, Oregon, and Washington /
    by Coleman, Robert Griffin, 1923-
    Published 1967
    Get full text
    Government Document eBook
  11. 11
    Petrography and petrology of volcanic rocks in the Mount Jefferson area, High Cascade Range, Oregon /
    by Greene, Robert C.
    Published 1968
    Get full text
    Government Document eBook
  12. 12
    The geology and petrography of Crater Lake National Park /
    Get full text
    Government Document eBook
  13. 13
    Lithology, thickness, and extent of hydrogeologic units underlying the East Portland area, Oregon /
    Get full text
    Government Document eBook
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