Show simple item record Femke en_US Geoff A. T. en_US Helen M. en_US 2010-04-30T14:23:10Z 2010-04-30T14:23:10Z 2010-06-01 en_US
dc.identifier en_US
dc.identifier.citation Davids , F , Duller , G A T & Roberts , H M 2010 , ' Testing the use of feldspars for optical dating of hurricane overwash deposits ' Quaternary Geochronology , vol 5 , no. 2-3 , pp. 125-130 . , 10.1016/j.quageo.2009.03.001 en_US
dc.identifier.other PURE: 149696 en_US
dc.identifier.other dspace: 2160/4633 en_US
dc.description.abstract The geological record preserved in coastal salt marshes provides an opportunity to determine past hurricane activity during the Late Holocene in New England, USA. High precision dating is important to correlate overwash sand layers associated with hurricane strikes between different sites along the coastline. Three different optical dating methods have been tested and compared with independent age control; i) optically stimulated luminescence from quartz, ii) infrared stimulated luminescence from K-feldspar, and iii) a subtraction method. Quartz and K-feldspar dating results for three samples in a core from Round Hill Beach Marsh are in stratigraphic order and they are consistent within errors with radiocarbon ages and with each other. Subtraction dating results agreed with the quartz and K-feldspar ages for two of the three samples, but the subtraction age of the youngest sample gave an age underestimate. Replicate equivalent dose values from quartz showed a larger variation than those from feldspars, and this resulted in larger errors for the quartz and subtraction ages than those based on feldspars. K-feldspar yields the most precise optical ages, but is complicated by the need to correct for anomalous fading. Both quartz and K-feldspar are suitable for optical dating of hurricane overwash deposits in New England. en_US
dc.format.extent 6 en_US
dc.relation.ispartof Quaternary Geochronology en_US
dc.title Testing the use of feldspars for optical dating of hurricane overwash deposits en_US
dc.contributor.pbl Institute of Geography & Earth Sciences en_US
dc.contributor.pbl Quaternary Environmental Change Group en_US

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