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4D archaeology

Published online by Cambridge University Press:  02 January 2015

Patrick Ashmore
Patrick Ashmore*
Affiliation:
Historic Scotland, Longmore House, Salisbury Place, Edinburgh EH9 1SH, Scotland. patrick.ashmore@scotland.gsi.gov.uk
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Extract

Introduction

By far the commonest absolute date estimates come from radiocarbon ages converted to dates by comparing them with the ages of tree rings of known date. There are still many problems with the technique. The quoted errors attached to most of the dates obtained between 1950 and around 1982 have to be increased by factors between 1.4 and 4 (Baillie 1990; Ashmore et al. 2000). There are plateaux in the calibration curve which mean that some ages correspond to an unacceptably wide range of calendar dates. Many archaeological sites contain pieces of charcoal much older than the main period of activity on them. Many charcoal dates obtained before about 1999 were from bulk samples and some demonstrably reflect mixing of charcoal of very different age, providing a meaningless date somewhere in between (Ashmore 1999a). There is now fairly abundant evidence that dates from poorly preserved bone, whether buried or cremated, can be centuries out. The marine effect, which has been assumed to make all Scottish shell dates 405 years too old, may fluctuate (Harkness 1983; Cook & Dugmore pers. comm.). The bones of people who ate food from marine sources show the marine effect and calculation of the required change to an age measured by a laboratory depends on a measurement of the strength of the marine effect at the time the person lived (Barrett et al. 2000). Some dates from residues on pots seem to represent accurately the time they formed; others for unknown reasons do not.

Type
Special section: Scotland 2002
Information
Antiquity , Volume 76 , Issue 293 , September 2002 , pp. 784 - 787
Copyright
Copyright © Antiquity Publications Ltd. 2002

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References

Alexander, D. 1999. Red Castle, Lunan Bay, Angus, Discovery and Excavation in Scotland 1999: 111.Google Scholar
Alexander, D. 2001. Red Castle, Lunan Bay, Angus, Discovery and Excavation in Scotland n.s. 2: 122–3.Google Scholar
Ashmore, P.J. 1996. Neolithic and Bronze Age Scotland. London: Batsford/Historic Scotland.Google Scholar
Ashmore, P.J. 1998. Radiocarbon dates for settlements, tombs and ceremonial sites with Grooved Ware in Scotland, in Gibson, A. & Simpson, D.D.A. (ed.), Prehistoric ritual and religion: 139–47. Stroud: Sutton.Google Scholar
Ashmore, P.J. 1999a. Radiocarbon dating: avoiding errors in dating by avoiding mixed samples, Antiquity 73: 124–30.CrossRefGoogle Scholar
Ashmore, P.J. 1999b. Appendix: Dating the ring of stones and chambered cairn at Calanais, Antiquity 73: 128–30.Google Scholar
Ashmore, P.J. 2000. Dating the Neolithic in Orkney, in Ritchie, A. (ed.): 299–308.Google Scholar
Ashmore, P.J. 2002. Settlement in the second millennium cal BC in Scotland, in Bruck, J. (ed.), Bronze Age landscapes: tradition and transformation: 1–8. Oxford: Oxbow.Google Scholar
Ashmore, P.J. Forthcoming. Dating the Mesolithic in Scotland, in Saville, A. (ed.), The Mesolithic of Scotland in its European context. Edinburgh: Society of Antiquaries of Scotland.Google Scholar
Ashmore, P.J., Cook, G.T. & Harkness, D.D. 2001. Radiocarbon dates for archaeological sites in Scotland issued before June 1996. Edinburgh: Historic Scotland. http://www.historic-scotland.gov.uk/ Google Scholar
Atkinson, J. Forthcoming. Excavation of a Mesolithic and Neolithic occupation site at Chapelfield, Cowie, Stirlingshire, Proceedings of the Society of Antiquaries of Scotland.Google Scholar
Baillie, M.J.L. 1990. Checking back on an assemblage of published radiocarbon dates, Radiocarbon 32(3): 361–6.Google Scholar
Barber, J. (ed.). 1997. The archaeological investigation of a prehistoric landscape: Excavations on Arran 1978–1981. Edinburgh: Scottish Trust for Archaeological Research.Google Scholar
Barclay, G.J. 2000a. Littlcour, Discovery and Excavation in Scotland n.s. 1: 125–8.Google Scholar
Barclay, G.J. 2000b. Between Orkney and Wessex: the search for the regional Neolithics of Britain, in Ritchie, (ed.): 299–308.Google Scholar
Barclay, G.J. & Maxwell, G.S. 1998. The Cleaven Dyke and Littleour: monuments in the Neolithic of Tayside. Edinburgh: Society of Antiquaries of Scotland.Google Scholar
Barrett, J., Beurens, R., Simpson, I., Ashmore, P., Poaps, S. & Huntley, J. 2000. What was the Viking Age and when did it happen? A view from Orkney, Norwegian Archaeological Review 33(1): 1–39.CrossRefGoogle Scholar
Bronk Ramsey, C. 2000. Oxcal 3.4. Oxford: Oxford Radiocarbon Accelerator Unit, Research Lab for Archaeology.Google Scholar
Burl, H.A.W. 1984. Report on the excavation of a Neolithic mound at Boghead, Speymouth Forest, Fochabers, Moray 1972 and 1974, Proceedings of the Society of Anti-quaries of Scotland 114: 35–73.Google Scholar
Cressky, M., Hardy, K. & Wickham-JONES, C. 2000a. Crowlin 1, Discovery and Excavation in Scotland n.s. 1: 123.Google Scholar
Cressky, M., Hardy, K. & Wickham-JONES, C. 2000b. Loch A Squir, Raasay, Discovery and Excavation in Scotland n.s. 1: 123.Google Scholar
Cressky, M., Hardy, K. & Wickham-Jones, C. 2000c. Sand, Discovery and Excavation in Scotland n.s. 1: 124.Google Scholar
Dalland, M. 1992. Burials at Winton House, Cockenzie at Port Seton, East Lothian Proceedings of the Society of Antiquaries of Scotland 121: 175–80.Google Scholar
Dick, A. 2001. Auchlishie, Discovery and Excavation in Scotland n.s. 2: 122.Google Scholar
Finlayson, B. 1999. Understanding the initial colonisation of Scotland, Antiquity 73: 879–84.Google Scholar
Greig, C., Greig, M. & Ashmore, P. 2000. Excavation of a cairn cemetery at Lundin Links, Fife in 1965–66, Proceedings of the Society of Antiquaries of Scotland 130: 1–52.Google Scholar
Hardy, K. 2001. Sand, Discovery and Excavation in Scotland n.s. 2: 125.Google Scholar
Hardy, K. & Wickham-JONES, C. 2002. Scotland’s First Settlers: the Mesolithic seascape of the Inner Sound, Skye and its contribution to the early prehistory of Scotland, Antiquity 70: 825–33.Google Scholar
Harkness, D.D. 1983. The extent of natural 14C deficiency in the coastal environment of the United Kingdom, PACT 8: First International. Symposium on 14C and Archaeology: 351–64.Google Scholar
Hill, P. 1982. Broxmouth Hill-fort excavations, 1977–78: an interim report, in Harding, D.W. (ed.), Later prehistoric settlement in south-east Scotland: 141–88. Edinburgh: Department of Archaeology, University of Edinburgh.Google Scholar
Johnston, D.A. 1997. Biggar Common, 1987–1993: an early prehistoric funerary and domestic landscape in Clydesdale, South Lanarkshire, Proceedings of the Society of Antiquaries of Scotland 127: 185–253.Google Scholar
Lambeck, K. 1995. Late Devensian and Holocene shorelines of the British Isles and North Sea from models of glacio-hydro-isostatic rebound, Journal of the Geological Society 152: 437–48.Google Scholar
Lanting, J.N. & Brlndley, A.L., 1998. Dating cremated bone: the dawn of a new era, Journal of Irish Archaeology 9: 1–7.Google Scholar
McCullagh, R.P.J. 1989. Excavations at Newton, Islay, Glasgow Archaeological Journal 15: 23–52.Google Scholar
McCullagh, R.P.J. & Tipping, R. (ed.) 1998. The Lairg Project 1988–1996: The evolution of an archaeological landscape in northern Scotland. Edinburgh: Scottish Trust for Ar-chaeological Research.Google Scholar
Neighbour, T. 2001. Galson, Discovery and Excavation in Scotland n.s. 1: 128.Google Scholar
Otlet, R.L., Walker, A J., Hewson, A.D. & Burleigh, R., 1980. 14C interlaboratory comparison in the UK: Experiment design, preparation and preliminary results, Radiocarbon 22(3): 936–46.Google Scholar
Parker Pearson, M. 1993 Bronze Age Britain. London: Batsford/ English Heritage.Google Scholar
Renfrew, A.C. 2000. The Auld Hoose Spaeks: society and life in Stone Age Orkney, in Ritchie, A. (ed.): 299–308.Google Scholar
Richards, C. 1993. An archaeological study of Neolithic Orkney: Architecture, order and social classification. Unpublished thesis submitted to the Department of Archaeology, University of Glasgow.Google Scholar
Ritchie, A. 2000. Knap of Howar, Papa Westray, Discovery and Excavation in Scotland n.s. 1: 124–5.Google Scholar
Ritchie, J.N.G. 2000. Stones of Stenness. Discovery and Excavation in Scotland n.s. 1: 125.Google Scholar
Ritchie, J.N.G. 2001. Stones of Stenness, Discovery and Excavation in Scotland n.s. 2: 125.Google Scholar
Shepherd, A. 1996. A Neolithic ring-mound at Midtown of Pitglassie, Auchterless, Aberdeenshire, Proceedings of the Society of Antiquaries of Scotland 126: 17–51.Google Scholar
Sheridan, J.A. 1993. The Pottery, in Maynard, D., Neolithic Pits at Carzield, Kirkton, Dumfriesshire, Transactions of the Dumfriesshire and Galloway Natural History and Antiquarian Society 68: 28–30.Google Scholar
Sheridan, J.A. 1997. Pottery, in Johnston, D.A., Biggar Common, 1987–1993: an early prehistoric funerary and domestic landscape in Clydesdale, South Lanarkshire, Proceedings of the Society of Antiquaries of Scotland 127: 185–253.Google Scholar
Sheridan, J.A. 2000. Acbnacreebeag and its French connections: Vive the ‘Auld Alliance’, in Henderson, J.C., The Prehistory and Early History of Atlantic Europe: Papers from a session held at the European Association of Archaeologists Fourth Annual Meeting in Göteborg 1998. Oxford: Archaeopress. BAR International series S861.Google Scholar
Stuiver, M., Reimer, P.J., Bard, E., Beck, J.W., Burr, G.S., Hughen, K.A., Kromer, B., McCormac, G., Van Der Plight, J. & Spurk, M. 1998. INTCAL98 Radiocarbon Age Calibration, 24,000-0 cal BP, Radiocarbon 40(3): 1041–84.CrossRefGoogle Scholar
Terry, J. 1995. Excavation at Lintshie Gutter unenclosed platform settlement, Crawford, Lanarkshire, Proceedings of the Society of Antiquaries of Scotland 125: 369–427.Google Scholar