Examining the case for the use of the Tertiary as a formal period or informal unit |
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| Authors: | RWO’B Knox PN Pearson TL Barry DJ Condon JCW Cope AS Gale PL Gibbard AC Kerr MW Hounslow JH Powell PF Rawson AG Smith CN Waters J Zalasiewicz |
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| Institution: | 1. British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK;2. School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff, CF10 3YE, UK;3. Centre for Earth, Planetary, Space and Astronomical Research, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK;4. NERC Isotope Geosciences Laboratory, Keyworth, Nottingham, NG12 5GG, UK;5. The Department of Geology, National Museum Cardiff, Cathays Park, Cardiff, CF10 3NP, UK;6. School of Earth & Environmental Sciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, UK;7. Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, UK;8. Centre for Environmental Magnetism and Palaeomagnetism, Geography Department, Lancaster University, Lancaster, LA1 4YB, UK;9. Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, UK;10. Scarborough Centre for Environmental and Marine Sciences, University of Hull, Scarborough Campus, Filey Road, Scarborough, YO11 3AZ, UK;11. Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, UK;12. Department of Geology, University of Leicester, Leicester, LE1 7RH, UK |
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| Abstract: | The ‘Tertiary’, omitted from IUGS-approved timescales since 1989, is still in common use. With the recent re-instatement of the Quaternary as a formal unit, the question arises as to whether the Tertiary too should be reinstated as a formal period, with the ‘Paleogene’ and ‘Neogene’ being downgraded to sub-periods. This paper presents arguments for and against this proposal, stemming from discussions by members of the Geological Society Stratigraphy Commission. It is intended to stimulate discussion of the topic in the wider community. |
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