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Publication Detail
Characterizing the significance of provenance on the inference of thermal history models from apatite fission-track data - A synthetic data study
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Conference Proceeding
  • Authors:
    Carter A, Gallagher K
  • Publication date:
  • Pagination:
    7, 23
  • Journal:
    Special Paper of the Geological Society of America
  • Volume:
  • Issue:
  • Status:
  • Print ISSN:
The role of provenance and inherited information in the inference and resolution of thermal histories from fission-track data from detrital apatite is examined in a set of synthetic samples with variable predepositional (provenance) and postdepositional (burial) components in the total thermal history. The models and data are used to show how partially reset samples with protracted provenance history lead to underprediction of the maximum burial temperature. Neglect of provenance effects can therefore lead to misinterpretation of postdepositional thermal histories. To avoid this problem, the sample depositional (stratigraphic) age should be routinely used where available to constrain the modeling procedure. We also show how provenance thermal histories can be recovered over a greater temperature range than previously considered. In practice, this will depend on the annealing model appropriate for a given apatite composition. For common fluorapatite samples with a protracted but simple provenance thermal history, this can be as high as 100 °C, rather than just up to 60 °C, as is often inferred. © 2004 Geological Society of America.
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