Devonian tioga tuff in Northeastern United States |
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| Authors: | J. M. Dennison D. A. Textoris |
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| Affiliation: | 1. Department of Geology, University of North Carolina, 27514, Chapel Hill, North Carolina, USA
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| Abstract: | The Tioga Bentonite ranges from a coarse crystal tuff to a tuffaceous shale enclosed in marine strata. It originally was deposited over the entire northeastern United States during the Middle Devonian. Trends in grain size, thickness, and numbers of preserved ash layers indicate a source volcano in west-central or central Virginia. |
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