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Paleogene time scale miscalibration: Evidence from the dating of the North Atlantic igneous province

2002; Geological Society of America; Volume: 30; Issue: 1 Linguagem: Inglês

10.1130/0091-7613(2002)030 2.0.co;2

1943-2682

David W. Jolley, B. F. Clarke, S. P. Kelley,

Geological and Geochemical Analysis

Research Article| January 01, 2002 Paleogene time scale miscalibration: Evidence from the dating of the North Atlantic igneous province David W. Jolley; David W. Jolley 1Centre for Palynology, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK Search for other works by this author on: GSW Google Scholar Benjamin Clarke; Benjamin Clarke 2Department of Earth Sciences, University of Cambridge, Madingley Road, Cambridge CB3 0EZ, UK Search for other works by this author on: GSW Google Scholar Simon Kelley Simon Kelley 3Department of Earth Sciences, Open University, Walton Hall, Milton Keynes MK7 6AA, UK Search for other works by this author on: GSW Google Scholar Author and Article Information David W. Jolley 1Centre for Palynology, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK Benjamin Clarke 2Department of Earth Sciences, University of Cambridge, Madingley Road, Cambridge CB3 0EZ, UK Simon Kelley 3Department of Earth Sciences, Open University, Walton Hall, Milton Keynes MK7 6AA, UK Publisher: Geological Society of America Received: 19 Apr 2001 Revision Received: 23 Jul 2001 Accepted: 09 Aug 2001 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2002) 30 (1): 7–10. https://doi.org/10.1130/0091-7613(2002)030 2.0.CO;2 Article history Received: 19 Apr 2001 Revision Received: 23 Jul 2001 Accepted: 09 Aug 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 David W. Jolley, Benjamin Clarke, Simon Kelley; Paleogene time scale miscalibration: Evidence from the dating of the North Atlantic igneous province. Geology 2002;; 30 (1): 7–10. doi: https://doi.org/10.1130/0091-7613(2002)030 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 Igneous activity in the North Atlantic igneous province began with the arrival of the proto-Iceland plume beneath the lithosphere in early Cenozoic time. Sediments between and equivalent to the oldest lavas contain an influx of a diagnostic pollen flora, an influx of the dinocyst Apectodinium, a benthic foraminiferal extinction, nannofossil zone NP9, and a carbon isotope excursion associated with the late Paleocene thermal maximum (LPTM). Lavas immediately overlying the LPTM strata (54.98 Ma on the current time scale), yield U-Pb and Ar-Ar isotopic dates between 57.5 and 60.54 Ma, highlighting a dating discrepancy of up to 5 m.y. Recognition of this disparity, as well as our biostratigraphical correlation, places the LPTM within the early phase of widespread northeast Atlantic margin basaltic volcanism. A later volcanic phase, equivalent to the seaward-dipping reflector series, terminates at 54 Ma. The onset of 60 Ma basaltic volcanism can be linked to ocean water mass perturbations, and the release of ocean-floor methane hydrates thought responsible for the LPTM. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.