Testing the use of feldspars for optical dating of hurricane overwash deposits

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dc.contributor.author Davids, Femke
dc.contributor.author Duller, Geoff A. T.
dc.contributor.author Roberts, Helen M.
dc.date.accessioned 2010-04-30T14:23:10Z
dc.date.available 2010-04-30T14:23:10Z
dc.date.issued 2010-06-01
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
dc.identifier.other PURE: 149696
dc.identifier.other dspace: 2160/4633
dc.identifier.uri http://hdl.handle.net/2160/4633
dc.description Davids, F., Duller, G. A. T., Roberts, H. M. (2010) Testing the use of feldspars for optical dating of hurricane overwash deposits. Quaternary Geochronology, 5 (2-3), pp. 125-130 en
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
dc.format.extent 6 en
dc.language.iso eng
dc.relation.ispartof Quaternary Geochronology en
dc.title Testing the use of feldspars for optical dating of hurricane overwash deposits en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1016/j.quageo.2009.03.001
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Quaternary Environmental Change Group en
dc.description.status Peer reviewed en


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