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SUMMARY:A formal subdivision of the Holocene Series/Epoch - Mike Walker\, 
 School of Archaeology\, History &amp\; Anthropology\, Trinity Saint David\
 , University of Wales\, Lampeter\, and Department of Geography and Earth S
 ciences\, Aberystwyth University
DTSTART:20160505T163000Z
DTEND:20160505T173000Z
UID:TALK65533@talks.cam.ac.uk
CONTACT:Della Murton
DESCRIPTION:This presentation considers the prospects for a formal subdivi
 sion of the Holocene Series/Epoch. Although previous attempts to subdivide
  the Holocene have proved inconclusive\, recent developments in Quaternary
  stratigraphy\, including the definition of the Pleistocene–Holocene bou
 ndary and subdivisions of the Pleistocene Series/Epoch\, mean that it may 
 be timely to revisit this matter. The Quaternary literature reveals a wide
 spread\, but variable\, informal usage of a tripartite division of the Hol
 ocene (‘Early’\, ‘Middle’ or ‘Mid’\, and ‘Late’)\, and it 
 is suggested that this de facto subdivision should now be formalized to en
 sure consistency in stratigraphic terminology. The proposal is for three s
 tages and subseries/subepochs of the Holocene: the Greenlandian\, Northgri
 ppian and Meghalayan\, each of which is underpinned by a Global Standard S
 tratotype Section and Point (GSSP). It is suggested that the Early–Middl
 e Holocene boundary should be defined by the global cooling event at 8.2 k
 a BP\, and the Middle–Late Holocene boundary by the widespread low-latit
 ude aridity phase at 4.2 ka BP\, Should the proposal find support from the
  Quaternary community\, a submission for ratification will be made to the 
 International Union of Geological Sciences (IUGS)\, via the Subcommission 
 on Quaternary Stratigraphy (SQS) and the International Commission on Strat
 igraphy (ICS).
LOCATION:Thirkill Room\, Clare College
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