Preliminary geologic map of the Dengate quadrangle, Morton County, North Dakota

Open-File Report 71-13
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Abstract

The Dengate quadrangle is an area of approximately 51 square miles in western Morton County, southwestern North Dakota. The quadrangle is about 40 miles west of Bismarck, the State capitol (fig. 1) and about 3.5 miles east of Glen Ullin (population 1,087). Interstate Highway 94,U.S. Highway 10, and the Northern Pacific Railroad cross the northern part of the area in an east-west direction.

The Dengate quadrangle is one of a group of 14 adjoining 71/2-minute quadrangles (fig. 1) that are being mapped by the U.S. Geological Survey to furnish a basis for classification of lands withdrawn by the Federal Government pending classification for coal, and to contribute to the geologic map atlas of the United States. Most of the fieldwork for the Dengate quadrangle was done during the late summers and early autumns of 1965 and 1966.

During the summer of 1966, the U.S. Geological Survey conducted a drilling program in the Dengate and nearby quadrangles (Smith, 1970) to gather information on the existence, thickness, and depth of lignite beds in withdrawn Federal lands. Two of the holes drilled are in the Dengate quadrangle.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Preliminary geologic map of the Dengate quadrangle, Morton County, North Dakota
Series title Open-File Report
Series number 71-13
DOI 10.3133/ofr7113
Year Published 1971
Language English
Publisher U.S. Geological Survey
Description Report: 31 p.; 4 Plates: 36.43 x 62.35 inches or smaller; 3 Tables: 27.37 x 25.14 inches or smaller
Country United States
State North Dakota
County Morton County
Other Geospatial Dengate quadrangle
Scale 24000
Additional publication details