Preliminary report of 1976 drilling of lignites in western North Dakota: Adams, Billings, Dunn, Hettinger, McKenzie, Mercer, Morton, Oliver, Slope, and Stark Counties

Technical Report · Fri Dec 31 23:00:00 EST 1976

OSTI ID:6501903

A drilling program was conducted in western North Dakota by the North Dakota Geological Survey (NDGS) under Grant No. 14-08-0001-G-306 from the U.S. Geological Survey. The drilling was done as part of the U.S. Geological Survey's program to evaluate and classify mineral lands in the public domain. The purpose of the program was to gather data on the thickness, quality, extent, and recoverability of lignite beds and the lithologic characteristics of the coal-bearing unit, the Fort Union Formation (Paleocene), in western North Dakota. This report includes geophysical logs, lists of lignite beds, and locations of the testholes. The descriptive terms, sand, silt, and clay, reported by the geologist, were modified to sandstone, siltstone, and claystone to conform to the U.S. Geological Survey's policy of using lithologic (rock-unit) terms for bedrock formations. Samples were described as collected and no depth adjustments based on logs were made. The lists of lignite beds were made from the density logs.

• Research Organization: Department of the Interior, Washington, DC (USA); North Dakota Geological Survey, Grand Forks (USA)
• OSTI ID: 6501903
• Report Number(s): NP-23276
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
011000* -- Coal
Lignite
& Peat-- Reserves
Geology
& Exploration
BOREHOLES
BROWN COAL
CARBONACEOUS MATERIALS
CAVITIES
COAL
COAL DEPOSITS
COAL RANK
DIMENSIONS
DRILLING
ENERGY SOURCES
EVALUATION
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
LIGNITE
LITHOLOGY
NORTH AMERICA
NORTH DAKOTA
RESOURCES
ROCKY MOUNTAIN REGION
SIZE
THICKNESS
USA