Evidence for increased cool season moisture during the middle Holocene

Abstract

Research Article| September 01, 1999 Evidence for increased cool season moisture during the middle Holocene Rhawn F. Denniston; Rhawn F. Denniston 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Search for other works by this author on: GSW Google Scholar Luis A. González; Luis A. González 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Search for other works by this author on: GSW Google Scholar Yemane Asmerom; Yemane Asmerom 2Department of Earth and Planetary Science, University of New Mexico, Albuquerque, New Mexico 87131, USA Search for other works by this author on: GSW Google Scholar Richard G. Baker; Richard G. Baker 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Search for other works by this author on: GSW Google Scholar Mark K. Reagan; Mark K. Reagan 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Search for other works by this author on: GSW Google Scholar E. Arthur Bettis, III E. Arthur Bettis, III 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Rhawn F. Denniston 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Luis A. González 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Yemane Asmerom 2Department of Earth and Planetary Science, University of New Mexico, Albuquerque, New Mexico 87131, USA Richard G. Baker 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Mark K. Reagan 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA E. Arthur Bettis, III 1Department of Geology, University of Iowa, Iowa City, Iowa 52242, USA Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (9): 815–818. https://doi.org/10.1130/0091-7613(1999)027<0815:EFICSM>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 Rhawn F. Denniston, Luis A. González, Yemane Asmerom, Richard G. Baker, Mark K. Reagan, E. Arthur Bettis; Evidence for increased cool season moisture during the middle Holocene. Geology 1999;; 27 (9): 815–818. doi: https://doi.org/10.1130/0091-7613(1999)027<0815:EFICSM>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 Isotopic analyses of three stalagmites from Cold Water Cave, northeast Iowa, United States, reveal nearly identical δ13C trends from ca. 7 to 2 ka. However, δ18O patterns differ by as much as 3‰ from 5.7 to 3.2 ka. These disparate δ18O values reflect evaporative 18O enrichment in meteoric water prior to infiltration, suggesting that previously calculated temperatures based on a single Cold Water Cave stalagmite overestimated middle Holocene warming. The coincidence of elevated middle Holocene growth rates in the stalagmites with the lowest oxygen isotopic compositions indicates that the middle Holocene was marked by a predominance of cool-weather precipitation during a period of increased overall aridity. 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.