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The U.S. Geological Survey is engaged in a program of field studies designed to present the geologic framework of the United States on easily read topographic maps. The maps selected as a base for these geologic data are part of the Army Map Service (AMS) series of 1° by 2° quadrangles at a scale of 1:250,000. The Price, Utah AMS 1:250,000 quadrangle is one of these maps (fig.1). For certain areas, however, chiefly those sectors of the country involved in the Geological Survey's coal exploration program, the geologic data are being compiled on newly developed base maps at a scale of 1:100,000. On these new maps the configuration of the land is shown by contours having a 50-m contour interval. One of these new maps has been used as a base for this geologic map of the Nephi, Utah, 30' x 60' quadrangle, the northwestern quadrangle of the Price sheet.


Open-File Report 85-466.

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