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archaeological and palaeogeographical studies have established that, since the last Ice Age, significant sea-level rise has submerged ancient European and North American coastlines. Important technological developments in marine geophysics and geodynamic modelling have, for the first time, created an opportunity to predict, locate and precisely map the locations of these ancient coastlines. http://www.science.ulster.ac.uk/cma/slan/ FURTHER HIGHLIGHTS • Colin Breen and Thomas McErlean have been admitted as Fellows of the Society of Antiquaries (FSA) of London. The Society’s 2,500 Fellows include many distinguished archaeologists and art and architectural historians holding positions of responsibility across the cultural heritage. The Fellowship is international in its reach and its interests are inclusive of all aspects of the material past. • Rory Quinn was awarded a two-year Coracle Fellowship with Memorial University of Newfoundland (Canada) to enhance and share technological knowledge about mapping and interpreting submerged archaeological sites off the coasts of Newfoundland and Ireland. • A special issue of the journal Historical Archaeology on ‘Maritime Archaeology in Ireland’ edited by Brian Williams was published in 2007. The 2007 fall issue (Volume 43, No. 3) is resultant from a session on Irish maritime archaeology at the SHA conference in Quebec in 2000, and includes seven full-length papers from the CMA. • In 2007, the Journal of Archaeological Science released a series of three virtual issues which bring together articles from ‘hot topics’ in the area (DNA/Environmental History/Shipwrecks and Harbours). The special issues on ‘Shipwrecks and Harbours’ contains 24 feature articles from the mid-1980s to present, with three full length papers from the CMA. 10
4.2 QUATERNARY SCIENCE Stone run (block stream) formation in the Falkland Islands over several cold stages, deduced from cosmogenic isotope (10Be and 26Al) surface exposure dating Cosmogenic isotope (10Be and 26Al) surface exposure dating has been applied to valley-axis and hillslope stone runs (relict periglacial block streams) and their source outcrops in the Falkland Islands, South Atlantic. The data indicate that stone runs are considerably older landforms than previously envisaged and afford no evidence that they are a product of the Last Glacial Maximum; the samples range in apparent 10Be age from 42 ka to 731 ka BP, but some of these are minima. The results indicate that valley-axis stone runs may be up to 700-800 ka old, have simple exposure histories and are composite landforms that developed over several cold stages. Analyses of some hillslope and outcrop samples also demonstrate simple exposure histories with 10Be ages from 42 ka to 658 ka BP. In contrast, isotopic ratios from other hillslope and outcrop samples reveal they have had a complex exposure history involving periods of burial or shielding; the samples range in 10Be age from 59 ka to 569 ka BP and these are regarded as minimum age estimates. Larger stone runs may be older than smaller runs and there is a possibility that stone runs older than 800 ka exist in other parts of the Falklands. The assertion that glaciation in the Falklands was restricted to the highest uplands is supported by the data. The potential for age determination of other boulder-strewn and bedrock landforms, using cosmogenic isotope analysis, in order to extend the geochronology of Quaternary events and processes in this climatically sensitive area of the South Atlantic Ocean is apparent. Figure 1. View across the upper part of Prince’s Street stone run, East Falkland. Components of stone run terrain (outcrops, hillslopes and valley-axis), sampled for cosmogenic dating are indicated and the arrow points downvalley. Peter Wilson, in collaboration with Michael J. Bentley, Department of Geography, University of Durham Christoph Schnabel, NERC Cosmogenic Isotope Facility Richard Clark, Penrith, Cumbria Sheng Xu, Scottish Universities Environmental Research Centre 11
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environmental sciences research institute - University of Ulster

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