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Preliminary report on the lignite resources of the Niobe area, Burke and Ward counties, North Dakota

Open-File Report 77-379

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Abstract

Two lignite beds, the Niobe and the Bonus, occur at strippable depths within the Niobe area. The Niobe bed averages 5 feet (1.5 meters) in thickness and the Bonus bed averages 8 feet (2.4 meters) in thickness. These beds lie in the lower part of the Sentinel Butte Member of the Fort Union Formation (Paleocene). The demonstrated resources of both beds combined is 122 million tons (110 million tonnes), all of which are under less than 120 feet (37 meters) of overburden. The overburden consists of glacial till and shale. The lateral continuity of the coal has been locally interrupted by faulting, glacial outwash channels, and erosion. Folding and/or faulting occurs parallel to the Missouri Coteau escarpment and faulting occurs roughly perpendicular to the escarpment.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Preliminary report on the lignite resources of the Niobe area, Burke and Ward counties, North Dakota
Series title:
Open-File Report
Series number:
77-379
Edition:
-
Year Published:
1977
Language:
ENGLISH
Publisher:
U.S. Dept. of the Interior, Geological Survey,
Description:
i, 10 leaves :ill., maps ;28 cm. in folder 25 x 30 cm.