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  1. Memorandum to Roger Revelle

    • Collection: Scripps Institution of Oceanography Letters, Clippings, Ships' Logs
    • Name: Dietz, Robert S. (Robert Sinclair), 1914-; Midpac Expedition (1950); Horizon (Ship); Revelle, Roger, 1909-1991; Dietz, Robert S. (Robert Sinclair), 1914-
    • Date: 1950-06-07
    • Topic: MidPac Expedition; San Diego (Calif.); Seamounts; U.S. Navy Electronics Laboratory (San Diego, Calif.)
    • Format: image
  2. Memorandum to Distribution List

    • Collection: Scripps Institution of Oceanography Letters, Clippings, Ships' Logs
    • Name: Dietz, Robert S. (Robert Sinclair), 1914-; Revelle, Roger, 1909-1991; Horizon (Ship); Midpac Expedition (1950); Dietz, Robert S. (Robert Sinclair), 1914-; Revelle, Roger, 1909-1991
    • Date: 1950-06-08
    • Topic: MidPac Expedition; U.S. Navy Electronics Laboratory (San Diego, Calif.); San Diego (Calif.)
    • Format: image
  3. Roger Revelle and Robert Dietz, co-chief scientists on the MidPac Expedition of 1950, discussing significance of lithified globigerina ooze dredged from western Pacific. The Cretaceous fossils enclosed indicated a much younger age than expected -- a mystery which remained unresolved until later explained by plate tectonics and continental drift. Shot 1 of 3

    • Collection: Roger Revelle Papers; Scripps Institution of Oceanography Photographs
    • Name: Midpac Expedition (1950); Horizon (Ship); Revelle, Roger, 1909-1991; Dietz, Robert S. (Robert Sinclair), 1914-
    • Date: 1951
    • Topic: Oceanographers; Submarine geology
    • Format: image
  4. Oceanographers Jeffery Dean Frautschy; Robert S. (Robert Sinclair) Dietz; Roger Revelle; and K.O. (Kenneth Orris) Emery bringing in a dredge haul aboard the R/V Horizon during the Midpac Expedition (1950). This expedition involved Scripps Institution of Oceanography and the U.S. Navy which discovered the Mid-Pacific Mountain Range on the bottom of the Pacific Ocean and confirmed Darwin's theory about the origin of atolls. 1950.

    • Collection: Roger Revelle Papers; Scripps Institution of Oceanography Photographs
    • Name: Dill, Robert Floyd, 1927-; Horizon (Ship); Midpac Expedition (1950); Frautschy, Jeffery Dean; Dietz, Robert S. (Robert Sinclair), 1914-; Emery, K.O. (Kenneth Orris), 1914-; Revelle, Roger, 1909-1991
    • Date: 1950
    • Topic: Dredges
    • Format: image
  5. Scientists, Regents and University of California officials aboard R/V HORIZON in San Diego for the March 26, 1951, dedication of Thomas Wayland Vaughan Aquarium Museum. L to R: Roger R. Revelle, Russell W. Raitt, Robert S. Dietz, Carl Sauer, Hugh Miller, Edward Goldberg, Carl Epling, Theodore Jahn, Martin W. Johnson, Allan DeLacy, John D. Isaacs, James M. Snodgrass, Capt. Dundas Tucker, George Beadle, Lawrence Blinks, Ben B. Cox, J.P. Maxfield, C.C. Lauritsen, John Adkins, Claude E. ZoBell, Vernon O. Knudsen, Lee Kinsey, Louis Slichter, Columbus Iselin, Carl L. Hubbs, Norris Rakestraw and Daniel Merriman

    • Collection: Scripps Institution of Oceanography Photographs
    • Name: United States. Navy Electronics Laboratory; Horizon (Ship); Revelle, Roger, 1909-1991; Sauer, Carl Ortwin, 1889-; DeLacy,Allan; Jahn, Theodore Louis, 1905-, Johnson, Martin W. (Martin Wiggo), 1893-1984; Isaacs, John D. (John Dove); Raitt, Russell W.; Dietz, Robert S. (Robert Sinclair), 1914-; Epling, Carl Clawson, 1894-; Goldberg, Edward D.; Miller, Hugh; Snodgrass, James Marion, 1908-1994
    • Date: 1951-03-26
    • Topic: Oceanographic research ships; Oceanographers
    • Format: image
  6. Bikini Encampment: Standing (L to R): unidentified, Robert Dill?, Roger Revelle, unidentified, Edwin Hamilton; Seated (L to R): Jeffery Frautschy, Robert Dietz, H. William Menard, K.O. Emery and Unidentified. Midpac Expedition, 1950

    • Collection: Roger Revelle Papers; Scripps Institution of Oceanography Photographs
    • Name: Morita, Richard Y.; Midpac Expedition (1950); Horizon (Ship); Dietz, Robert S. (Robert Sinclair), 1914-; Menard, Henry W. (Henry William), 1920-1986; Hamilton, Edwin L. (Edwin Lee), 1914-; Dill, Robert Floyd, 1927-; Emery, Kenneth O. (Kenneth Orris), 1914-; Frautschy, Jeffery Dean; Revelle, Roger, 1909-1991
    • Date: 1950
    • Topic: Oceanography--Field work (land); Oceanographers
    • Format: image
  7. Midpac Expedition scientific party at Bikini. Front row: Jeffery Frautschy, Robert Dietz, H. William Menard, Kenneth O. Emery, unidentified; Back row: unidentified, Robert Dill, Roger Revelle, unidentified, Ed Hamilton. 1950

    • Collection: Roger Revelle Papers; Scripps Institution of Oceanography Photographs
    • Name: Morita, Richard Y.; Horizon (Ship); Midpac Expedition (1950); Revelle, Roger, 1909-1991; Frautschy, Jeffery Dean; Emery, K.O. (Kenneth Orris), 1914-; Dill, Robert Floyd, 1927-; Menard, Henry W. (Henry William), 1920-1986; Dietz, Robert S. (Robert Sinclair), 1914-
    • Date: 1950
    • Topic: Bikini Atoll (Marshall Islands); Oceanographers
    • Format: image
  8. Roger Revelle and Robert Dietz, co-chief scientists on the MidPac Expedition of 1950, discussing significance of lithified globigerina ooze dredged from western Pacific. The Cretaceous fossils enclosed indicated a much younger age than expected -- a mystery which remained unresolved until later explained by plate tectonics and continental drift. Shot 3 of 3

    • Collection: Roger Revelle Papers; Scripps Institution of Oceanography Photographs
    • Name: Horizon (Ship); Midpac Expedition (1950); Revelle, Roger, 1909-1991; Dietz, Robert S. (Robert Sinclair), 1914-
    • Date: 1950
    • Topic: Oceanographers; Submarine geology
    • Format: image
  9. Roger Revelle and Robert Dietz, co-chief scientists on the MidPac Expedition of 1950, discussing significance of lithified globigerina ooze dredged from western Pacific. The Cretaceous fossils enclosed indicated a much younger age than expected -- a mystery which remained unresolved until later explained by plate tectonics and continental drift. Shot 2 of 3

    • Collection: Roger Revelle Papers; Scripps Institution of Oceanography Photographs
    • Name: Horizon (Ship); Midpac Expedition (1950); Revelle, Roger, 1909-1991; Dietz, Robert S. (Robert Sinclair), 1914-
    • Date: 1951
    • Topic: Oceanographers; Submarine geology
    • Format: image
  10. Researchers on Scripps Institution's first post war expedition into the Pacific Ocean, Operation MidPac in 1950, checking the contents of a dredge haul. Then Acting Director Roger Revelle is in left foreground. L to R: Roger Revelle, Bob Dietz, Ed Hamilton, Ken Emery, Bob Dill, Dana Carlson.

    • Collection: Scripps Institution of Oceanography Photographs
    • Name: Scripps Institution of Oceanography; Horizon (Ship); Midpac Expedition (1950); Dill, Robert Floyd, 1927-; Carlson, Dean; Emery, K. O. (Kenneth Orris), 1914-; Hamilton, Edwin L. (Edwin Lee), 1914-; Dietz, Robert S. (Robert Sinclair), 1914-; Revelle, Roger, 1909-1991
    • Date: 1950
    • Topic: Oceanographers; Marine mineral resources; Submarine geology
    • Format: image
  11. Bikini Encampment: Standing (L to R): unidentified, Robert Dill?, Roger Revelle, unidentified, Edwin Hamilton; Seated (L to R): Jeffery Frautschy, Robert Dietz, H. William Menard, K.O. Emery and Unidentified. Midpac Expedition, 1950

    • Collection: Scripps Institution of Oceanography Photographs
    • Name: Morita, Richard Y.; Midpac Expedition (1950); Horizon (Ship); Emery, Kenneth O. (Kenneth Orris), 1914-; Dietz, Robert S. (Robert Sinclair), 1914-; Menard, Henry W. (Henry William), 1920-1986; Frautschy, Jeffery Dean; Revelle, Roger, 1909-1991; Hamilton, Edwin L. (Edwin Lee), 1914-; Dill, Robert Floyd, 1927-
    • Date: 1950
    • Topic: Oceanography--Field work (land); Oceanographers
    • Format: image