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1951 Map of Demarcation Point
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1951 Map of Demarcation Point

USGS Topo · Published 1951

About this map

The Alaska Yukon international boundary defines the eastern edge of this reconnaissance survey, where the Brooks Range meets the Arctic Ocean. Compiled from surveys spanning 1906 to 1946, the map captures a landscape of intense geological relief and complex drainage systems flowing north from the Romanzof Mountains and British Mountains. The settlement of Gordon sits near Demarcation Bay, serving as a rare point of human habitation along this remote coastline. The intricate barrier islands and lagoons, including Beaufort Lagoon and Pokok Lagoon, separate the mainland from the Beaufort Sea. Large glacial rivers such as the Kongakut River, Jago River, and Aichilik River dominate the interior, carving through high peaks like Mt Greenough and Whale Mountain. This mid-century study documents the frontier before modern infrastructure, focusing on the natural contours of the northern slope.

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Map Details

Date Portrayed1951
Date Published1951
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:250,000
Physical Dimensions24.8 x 23.1 inches

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain