Temporal and spatial distribution of biozones and facies relative to geochemically correlated K-bentonites in the Middle Ordovician Taconic foredeep

Research Article| August 01, 1994 Temporal and spatial distribution of biozones and facies relative to geochemically correlated K-bentonites in the Middle Ordovician Taconic foredeep Charles E. Mitchell; Charles E. Mitchell 1Department of Geology, State University of New York at Buffalo, Buffalo, New York 14260 Search for other works by this author on: GSW Google Scholar Daniel Goldman; Daniel Goldman 1Department of Geology, State University of New York at Buffalo, Buffalo, New York 14260 Search for other works by this author on: GSW Google Scholar John W. Delano; John W. Delano 2Department of Geological Sciences, State University of New York at Albany, Albany, New York 12222 Search for other works by this author on: GSW Google Scholar Scott D. Samson; Scott D. Samson 3Department of Earth Sciences, Syracuse University, Syracuse, New York 13244 Search for other works by this author on: GSW Google Scholar Stig M. Bergström Stig M. Bergström 4Department of Geological Sciences, Ohio State University, Columbus, Ohio 43210 Search for other works by this author on: GSW Google Scholar Author and Article Information Charles E. Mitchell 1Department of Geology, State University of New York at Buffalo, Buffalo, New York 14260 Daniel Goldman 1Department of Geology, State University of New York at Buffalo, Buffalo, New York 14260 John W. Delano 2Department of Geological Sciences, State University of New York at Albany, Albany, New York 12222 Scott D. Samson 3Department of Earth Sciences, Syracuse University, Syracuse, New York 13244 Stig M. Bergström 4Department of Geological Sciences, Ohio State University, Columbus, Ohio 43210 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1994) 22 (8): 715–718. https://doi.org/10.1130/0091-7613(1994)022<0715:TASDOB>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Charles E. Mitchell, Daniel Goldman, John W. Delano, Scott D. Samson, Stig M. Bergström; Temporal and spatial distribution of biozones and facies relative to geochemically correlated K-bentonites in the Middle Ordovician Taconic foredeep. Geology 1994;; 22 (8): 715–718. doi: https://doi.org/10.1130/0091-7613(1994)022<0715:TASDOB>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Middle Ordovician rocks of the Taconic foredeep in the Mohawk Valley, New York, contain numerous altered volcanic ash beds (K-bentonites). These synchronous beds have the potential to link disparate facies in a way that is not feasible with biostratigraphy or sequence stratigraphy alone. Geochemical fingerprinting of glass inclusions within volcanic quartz phenocrysts permits unambiguous matching of the compositionally unique ash layers. The resulting correlations demonstrate that time lines based on the graptolite biozones and transgressive-regressive facies patterns parallel the K-bentonite isochrons. They also demonstrate that much of the upper Trenton Group is older than previously believed and facies relations are markedly different from previous interpretations. Although some facies patterns appear to be synchronous across the region, the likely existence of substantial structural control on facies development in the basin suggests that it is unwise to attribute these patterns to eustatic sea-level changes. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.