National Geologic Map Database
Product Description Page
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Title: Pre-Cambrian igneous rocks of the Unkar terrane, Grand Canyon of the Colorado, Arizona
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Author(s): Walcott, C.D.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Annual Report 14 [pt. 2, p. 503-519]
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Larger Work: Powell, J.W., Fourteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1892-1893; Part II
- Publication Date: 1894
- Map Scale: 1:192,647
- Cross Section: Yes
- North Latitude: 36° 17' 0" N (36.2833)
- South Latitude: 35° 57' 0" N (35.9500)
- East Longitude: 111° 45' 0" W (-111.7500)
- West Longitude: 112° 0' 0" W (-112.0000)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.