Meteoric sphaerosiderite lines and their use for paleohydrology and paleoclimatology

Abstract

Research Article| November 01, 1998 Meteoric sphaerosiderite lines and their use for paleohydrology and paleoclimatology Greg A. Ludvigson; Greg A. Ludvigson 1Iowa Department of Natural Resources Geological Survey Bureau, Iowa City, Iowa 52242-1319 Search for other works by this author on: GSW Google Scholar Luis A. González; Luis A. González 2Department of Geology, University of Iowa, Iowa City, Iowa 52242-1379 Search for other works by this author on: GSW Google Scholar Ronald A. Metzger; Ronald A. Metzger 3Southwestern Oregon Community College, Coos Bay, Oregon 97420-2956 Search for other works by this author on: GSW Google Scholar Brian J. Witzke; Brian J. Witzke 1Iowa Department of Natural Resources Geological Survey Bureau, Iowa City, Iowa 52242-1319 Search for other works by this author on: GSW Google Scholar Robert L. Brenner; Robert L. Brenner 2Department of Geology, University of Iowa, Iowa City, Iowa 52242-1379 Search for other works by this author on: GSW Google Scholar Angela P. Murillo; Angela P. Murillo 2Department of Geology, University of Iowa, Iowa City, Iowa 52242-1379 Search for other works by this author on: GSW Google Scholar Tim S. White Tim S. White 2Department of Geology, University of Iowa, Iowa City, Iowa 52242-1379 Search for other works by this author on: GSW Google Scholar Geology (1998) 26 (11): 1039–1042. https://doi.org/10.1130/0091-7613(1998)026<1039:MSLATU>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 MailTo Tools Icon Tools Get Permissions Search Site Citation Greg A. Ludvigson, Luis A. González, Ronald A. Metzger, Brian J. Witzke, Robert L. Brenner, Angela P. Murillo, Tim S. White; Meteoric sphaerosiderite lines and their use for paleohydrology and paleoclimatology. Geology 1998;; 26 (11): 1039–1042. doi: https://doi.org/10.1130/0091-7613(1998)026<1039:MSLATU>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 Sphaerosiderite, a morphologically distinct millimeter-scale spherulitic siderite (FeCO3), forms predominantly in wetland soils and sediments, and is common in the geologic record. Ancient sphaerosiderites are found in paleosol horizons within coal-bearing stratigraphic intervals and, like their modern counterparts, are interpreted as having formed in water-saturated environments. Here we report on sphaerosiderites from four different stratigraphic units, each of which has highly variable 13C and relatively stable 18C compositions. The unique isotopic trends are analogous to well-documented meteoric calcite lines, which we define here as meteoric sphaerosiderite lines. Meteoric sphaerosiderite lines provide a new means of constraining ground-water δ18O and thus allow evaluation of paleohydrology and paleoclimate in humid continental settings. 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.