Zircon Fission-Track Ages of Pearlette Family Ash Beds in Meade County, Kansas

Abstract

Research Article| October 01, 1973 Zircon Fission-Track Ages of Pearlette Family Ash Beds in Meade County, Kansas C. W. Naeser; C. W. Naeser 1U.S. Geological Survey, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Glen A. Izett; Glen A. Izett 1U.S. Geological Survey, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Ray E. Wilcox Ray E. Wilcox 1U.S. Geological Survey, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Geology (1973) 1 (2): 93–95. https://doi.org/10.1130/0091-7613(1973)1<93:ZFAOPF>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation C. W. Naeser, Glen A. Izett, Ray E. Wilcox; Zircon Fission-Track Ages of Pearlette Family Ash Beds in Meade County, Kansas. Geology 1973;; 1 (2): 93–95. doi: https://doi.org/10.1130/0091-7613(1973)1<93:ZFAOPF>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentBy SocietyGeology Search Advanced Search Abstract Pearlette family volcanic ash beds at two faunally important late Cenozoic localities near Meade, Meade County, Kansas, are very similar in chemical and mineralogic composition, yet their zircon microphenocrysts have markedly different fission-track ages. Zircon microphenocrysts from type B Pearlette volcanic ash underlying sediments that contain the Borchers local fauna of Hibbard are various shades of pink and have a fission-track age of 1.9 ± 0.1 m.y. In contrast, zircon microphenocrysts from type O Pearlette volcanic ash overlying sediments that contain the Cudahy local fauna of Hibbard are colorless and have a fission-track age of 0.6 ± 0.1 m.y. These fission-track ages are in good agreement with K-Ar ages on the probable source material in Yellowstone National Park. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not currently have access to this article.