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Filtering by: Creator Walker, George Walton, 1921-

The Ore bin ; Vol. 36 No. 7 (July 1974)

Creator:

Oregon. Dept. of Geology and Mineral Industries, Walker, George Walton, 1921-, and Rau, Weldon W.

Resource Type:

Journal
The Ore bin ; Vol. 32 No. 6 (June 1970)

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
The Ore bin ; Vol. 24 No.2 (February 1962)

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