Chemistry and provenance of detrital plagioclase

Research Article| October 01, 1979 Chemistry and provenance of detrital plagioclase Arthur S. Trevena; Arthur S. Trevena 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar W. P. Nash W. P. Nash 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar Author and Article Information Arthur S. Trevena 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 W. P. Nash 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1979) 7 (10): 475–478. https://doi.org/10.1130/0091-7613(1979)7<475:CAPODP>2.0.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Arthur S. Trevena, W. P. Nash; Chemistry and provenance of detrital plagioclase. Geology 1979;; 7 (10): 475–478. doi: https://doi.org/10.1130/0091-7613(1979)7<475:CAPODP>2.0.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 Electron-probe microanalysis for Ca, K, and Na in detrital feldspar can be used to determine the ultimate origin of plagioclase in arkosic sandstone. In volcanic rocks, K content of plagioclase increases with decreasing Ca content. The plagioclase of metamorphic rocks contains a negligible amount of K, and metamorphic plagioclase can be distinguished readily from volcanic plagioclase. Plutonic plagioclase contains an intermediate amount of K, and its compositional range overlaps in part the compositional range of both volcanic and metamorphic plagioclase. Hundreds of detrital plagioclase grains from various arkosic sandstones were analyzed for Ca, K, and Na. These detrital grains may be placed into seven provenance groups: volcanic; plutonic; metamorphic; volcanic or plutonic; volcanic or granophyre; plutonic or metamorphic; and plutonic, low-rank metamorphic or authigenic. The electron microprobe is a valuable tool for provenance study of detrital plagioclase. Microanalysis of detrital plagioclase can be used to detect provenance variations in sedimentary basins of active continental margins and might have bearing on plate-tectonics models. The electron microprobe deserves increased use by sandstone petrologists. 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.