UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at http://www.ucl.ac.uk/finance/research/post_award/post_award_contacts.php by entering your department
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
Quantitative geomorphology of the White Mountains (California) using detrital apatite fission track thermochronology
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Vermeesch P
  • Publication date:
    24/09/2007
  • Journal:
    Journal of Geophysical Research: Earth Surface
  • Volume:
    112
  • Issue:
    3
  • Status:
    Published
Abstract
Detrital thermochronology has been proposed as a method for measuring average basin-wide erosion rates. This paper illustrates how to use detrital apatite fission track (AFT) thermochronology to map out where in a basin erosion takes place. Five samples of detrital AFT ages were collected on an alluvial fan that is fed by the Marble Creek drainage basin in the northern White Mountains (California). Using a digital elevation model (DEM) to characterize the basin hypsometry and a few published basement samples to constrain the age-elevation curve of the catchment, the detrital AFT distribution was predicted. Comparing the observed with the predicted age distributions reveals that localized rockfall events provide the sediment source of the currently active Marble Creek, but a composite sample from the entire alluvial fan indicates that, over longer time scales, the entire catchment contributes material to the debris-flow dominated fan, with more material being derived from lower elevations than from higher up the Marble Creek Canyon. The observed AFT age distribution is compared with the hypsometric predictions using the "Cumulative Age Distribution" (CAD) which is the cumulative distribution of the measured ages. In contrast with probability density estimators and their cumulative equivalents, the CAD requires no numerical smoothing while properly accounting for (unequal) measurement uncertainties. Copyright 2007 by the American Geophysical Union.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Researchers
Author
Dept of Earth Sciences
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by