Contrasting depositional models for Pennsylvanian black shale discerned from molybdenum abundances

Abstract

Research Article| February 01, 1991 Contrasting depositional models for Pennsylvanian black shale discerned from molybdenum abundances Raymond M. Coveney, Jr.; Raymond M. Coveney, Jr. 1Department of Geosciences, University of Missouri, Kansas City, Missouri 64110-2499 Search for other works by this author on: GSW Google Scholar W. Lynn Watney; W. Lynn Watney 2Kansas Geological Survey, University of Kansas, Lawrence, Kansas 66046-2598 Search for other works by this author on: GSW Google Scholar Christopher G. Maples Christopher G. Maples 2Kansas Geological Survey, University of Kansas, Lawrence, Kansas 66046-2598 Search for other works by this author on: GSW Google Scholar Geology (1991) 19 (2): 147–150. https://doi.org/10.1130/0091-7613(1991)019<0147:CDMFPB>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Raymond M. Coveney, W. Lynn Watney, Christopher G. Maples; Contrasting depositional models for Pennsylvanian black shale discerned from molybdenum abundances. Geology 1991;; 19 (2): 147–150. doi: https://doi.org/10.1130/0091-7613(1991)019<0147:CDMFPB>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 Some black shales contain >1000 ppm Mo, comparable to conventional ores. These include Mo-rich Pennsylvanian black shales that were deposited rapidly near shore as epeiric seas inundated peat swamps, while coeval beds, less enriched in Mo, accumulated slowly offshore. Concentration of Mo probably resulted from retention of the metal by organic matter in acidic pore fluids characteristic of nearshore deposits. Thus, in Pennsylvanian shales where organic productivity is significant, Mo variations may be used to distinguish nearshore from offshore conditions. Enrichments in Mo occur in black shales of other ages; therefore a high Mo content may be useful as a general criterion for nearshore environments and other conditions with strong pH gradients. 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.