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Showing 1 to 1 of 1 for “"Clay minerals--North Dakota; Geology--North Dakota--Billings County"”.
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Mineralogy and chemistry of clay-rich sediments in the contact zone of the Bullion Creek and Sentinel Butte Formations (Paleocene), Billings County, North Dakota
… of the surface and near surface sediments in the North Dakota part of the Williston Basin. These rocks are composed of sandstones, siltstones, claystones, and numerous lignite beds. A distinct surface color change from light colors in the Bullion Creek Formation to dark colors in the Sentinel …