Rodes, A. , Pallas, R., Braucher, R., Moreno, X., Masana, E. and Bourles, D.L. (2011) Effect of density uncertainties in cosmogenic 10Be depth-profiles: Dating a cemented pleistocene alluvial fan (carboneras fault, se iberia). Quaternary Geochronology, 6(2), pp. 186-194. (doi: 10.1016/j.quageo.2010.10.004)
Full text not currently available from Enlighten.
Publisher's URL: http://dx.doi.org/10.1016/j.quageo.2010.10.004
Abstract
Cosmonuclide depth-profiles can be used to calculate both the age of landforms and the rates at which erosion has affected them since their formation. Results are heavily dependent on the selection of the appropriate density of the material exposed to cosmic radiation. In materials where density has changed significantly through time, as in alluvial sediments affected by post-depositional calcrete cementation, the uncertainties in density must be accurately modelled to produce reliable results. We develop new equations for an accurate account of density uncertainties and to test the effect of density gain due to cementation processes. We apply them to two <sup>10</sup>Be depth-profiles measured in an alluvial fan deformed by the Carboneras Fault (SE Iberia). When a linear increase of density through time is considered, model results yield an age ranging from 200 ka to 1 Ma within 1<3 confidence level.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Rodes, Dr Angel |
Authors: | Rodes, A., Pallas, R., Braucher, R., Moreno, X., Masana, E., and Bourles, D.L. |
College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
Journal Name: | Quaternary Geochronology |
ISSN: | 1871-1014 |
ISSN (Online): | 1878-0350 |
Published Online: | 10 November 2010 |
University Staff: Request a correction | Enlighten Editors: Update this record