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Showing 1 to 2 of 2 for “"Geochemistry--North Dakota; Geology"”.

  1. Analysis of petroleum source rocks of the Bakken Formation (Devonian and Mississippian) in North Dakota

    Webster, Rick L.

    <p>The Bakken Formation of North Dakota consists of upper and lower, black, organic-rich shales separated by a calcareous siltstone middle member. The formation is a relatively thin unit (maximum thickness of 145 feet) with the lower shale .attaining a maximum thickness of 50 feet and the upper …

    nodak Repository record

  2. A survey of 24 elements in North Dakota lignite (Fort Union Group, Paleocene) and possible geologic implications

    Zimmer-Dauphinee, Susan A.

    … and lignite samples were collected from western North Dakota for element analysis during May 1978, April 1979, and August 1979. Lignite was collected from the Sentinel Butte Formatlon--Hagel Bed (Oliver and McClean Counties), Beulah-Zap Bed (Mercer County), Lehigh Bed (Stark County)-- and from …

    nodak Repository record