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Radiogenic isotope records of Quaternary glaciations: Changes in the erosional source and weathering processes

2004; Geological Society of America; Volume: 32; Issue: 10 Linguagem: Inglês

10.1130/g20734.1

1943-2682

B. C. Reynolds, Sarah C. Sherlock, S. P. Kelley, Kevin W. Burton,

Geological formations and processes

Research Article| October 01, 2004 Radiogenic isotope records of Quaternary glaciations: Changes in the erosional source and weathering processes Ben C. Reynolds; Ben C. Reynolds 1Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK, and Institute for Isotope Geology and Mineral Resources, Department of Earth Sciences, ETH-Zentrum NO, Sonneggstrasse 5, CH-8092 Zürich, Switzerland Search for other works by this author on: GSW Google Scholar Sarah C. Sherlock; Sarah C. Sherlock 2Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK Search for other works by this author on: GSW Google Scholar Simon P. Kelley; Simon P. Kelley 2Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK Search for other works by this author on: GSW Google Scholar Kevin W. Burton Kevin W. Burton 2Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK Search for other works by this author on: GSW Google Scholar Author and Article Information Ben C. Reynolds 1Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK, and Institute for Isotope Geology and Mineral Resources, Department of Earth Sciences, ETH-Zentrum NO, Sonneggstrasse 5, CH-8092 Zürich, Switzerland Sarah C. Sherlock 2Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK Simon P. Kelley 2Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK Kevin W. Burton 2Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK Publisher: Geological Society of America Received: 09 Apr 2004 Revision Received: 25 Jun 2004 Accepted: 29 Jun 2004 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2004) 32 (10): 861–864. https://doi.org/10.1130/G20734.1 Article history Received: 09 Apr 2004 Revision Received: 25 Jun 2004 Accepted: 29 Jun 2004 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Ben C. Reynolds, Sarah C. Sherlock, Simon P. Kelley, Kevin W. Burton; Radiogenic isotope records of Quaternary glaciations: Changes in the erosional source and weathering processes. Geology 2004;; 32 (10): 861–864. doi: https://doi.org/10.1130/G20734.1 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 Variations of global and regional silicate weathering rates and paleo-ocean circulation patterns are estimated by using radiogenic isotope records, but the effects of changes in provenance are generally ignored. Here sediment provenance has been constrained through the use of Ar-Ar ages for individual detrital minerals from the Labrador Sea, which can be compared directly to the radiogenic isotope compositions from the same core material. Dramatic changes in the radiogenic isotope composition of North Atlantic Deep Water through the Quaternary Period are shown to reflect discrete changes in both sources and weathering processes accompanying Northern Hemisphere glaciation. Changes in the different radiogenic isotope systems reflect the influence of source, physical weathering, and chemical weathering, and not simply changes in the underlying weathering rate or ocean circulation patterns that are typically inferred. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.