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1990 Map of Eagletail Mountains East
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1990 Map of Eagletail Mountains East

USGS Topo · Published 1990

About this map

Courthouse Rock stands as a prominent landmark on the northern edge of the Eagletail Mountains, marking the transition into the arid expanse of the Harquahala Plain. This 1990 provisional study, based on fieldwork from the mid-1980s, documents a landscape shaped by both dramatic desert geology and scattered mineral exploration. Evidence of human activity is found in the Frenchman Mine on the slopes of Granite Mountain and several unnamed Prospect sites throughout the range. The map illustrates the convergence of several county boundaries, where the border of La Paz, Maricopa, and Yuma counties meet amidst the high peaks. Natural features like the Natural Arch and Eagletail Peak highlight the isolation of this corner of Arizona, while the Centennial Wash provides a primary drainage route through the northern desert flats.

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Map Details

Date Portrayed1990
Date Published1990
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions22 x 26.9 inches

Editions of this 1990 Eagletail Mountains East Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain