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Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, U.S.A. email: picard@earth.utah.edu
Key Words: History of geology structural geology biography Utah Earth history teaching Wasatch Mountains
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The writer sees much in favor of the hypothesis of primary vertical movements and has perhaps accorded it greater attention than some will like.
A. J. Eardley, 1962
When I think of Armand Eardley (Fig. 1), who became a friend, I remember late summer 1968, the first time I went into the field with him. We drove to Antelope Island, normally the largest island in Great Salt Lake, though it is sometimes joined to the land. There we looked at Recent deposits of the lake around the island's margins. These sediments were Armand's foremost interest then, a return to studies that culminated in the pioneering publication in 1938 of "Sediments of Great Salt Lake, Utah." In the several years that followed, we went into the Wasatch Mountains, the range that he knew best throughout his professional life and wrote about most often.
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Now, thirty-eight or so years later, much of his introduction that day to the geology has dimmed. The deposits with the largest ooliths of Great Salt Lake lie on a bar off the southwest end of the island, washed by waves driven by the prevailing winds, the northwesterlies and southwesterlies. Aragonite algal mounds, which he first mapped in the mid-1930s, sit in
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