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STS068-203-020 Marquette, Michigan, U.S.A. October 1994 The Crystalline Uplands, the small port city of Marquette (left of center) on Michigan's Upper Peninsula, and Lake Superior are featured in this southeast-looking, low-oblique, color infrared photograph. One of the most scenic regions in Michigan, the Crystalline Uplands consists of old, resistant mountain cores that form part of a Precambrian shield extending northward into Canada. The terrain, sculptured into various forms by continental glaciation, has thin and infertile soil. Marquette serves as a lumber, iron ore mining and shipping, and resort center. Visible are the runways of K. I. Sawyer Air Force Base (near top center) and the long, snakelike Dead River Storage Basin (midway between center and bottom center).
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