Pedogenic iron-manganese nodules in Vertisols: A new proxy for paleoprecipitation?

Abstract

Research Article| October 01, 2001 Pedogenic iron-manganese nodules in Vertisols: A new proxy for paleoprecipitation? Cynthia A. Stiles; Cynthia A. Stiles 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Search for other works by this author on: GSW Google Scholar Claudia I. Mora; Claudia I. Mora 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Search for other works by this author on: GSW Google Scholar Steven G. Driese Steven G. Driese 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Cynthia A. Stiles 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Claudia I. Mora 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Steven G. Driese 1Department of Geological Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Publisher: Geological Society of America Received: 23 Feb 2001 Revision Received: 31 May 2001 Accepted: 21 Jun 2001 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2001) 29 (10): 943–946. https://doi.org/10.1130/0091-7613(2001)029<0943:PIMNIV>2.0.CO;2 Article history Received: 23 Feb 2001 Revision Received: 31 May 2001 Accepted: 21 Jun 2001 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Cynthia A. Stiles, Claudia I. Mora, Steven G. Driese; Pedogenic iron-manganese nodules in Vertisols: A new proxy for paleoprecipitation?. Geology 2001;; 29 (10): 943–946. doi: https://doi.org/10.1130/0091-7613(2001)029<0943:PIMNIV>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 The total Fe content of pedogenic iron-manganese (Fe-Mn) nodules taken from a Vertisol climosequence on the Texas Gulf Coastal Plain correlates with mean annual precipitation (MAP, r2 = 0.92). No significant trend of total Fe (FeTOT) with depth was noted in profiles. Using the regression developed from modern Vertisol data, FeTOT contents of Paleozoic paleo-Vertisol Fe-Mn nodules yielded MAP regimes comparable to previously inferred paleoenvironmental interpretations. Paleoprecipitation estimates derived from Fe-Mn nodules for an uneroded, Late Mississippian paleo-Vertisol are very close to estimates determined from a depth to pedogenic carbonate horizon (DCH) proxy determined from the modern Vertisol climosequence. The lack of soil depth dependence of the Fe-Mn nodule proxy provides a consistent paleoprecipitation estimate even in eroded paleo- Vertisols and, in combination with the DCH, may be useful in determining original paleosol thickness. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.