Identifying the post-sedimentary part of fission track length histograms
with inherited tracks
Fission track length histograms from sedimentary samples may contain
tracks generated before the time of deposition. They may originate from
various source areas with their own thermal histories. After deposition
they share thermal history. Inherited tracks, mainly represented by the
shortest tracks, are mixed with the young post–sedimentary tracks due
to anisotropic annealing, various grain chemistry and uncertainties of
measure. Inherited tracks complicate calculating the thermal history.
Deconvolution from time sequence analysis  is used to separate
pre–and post–depositional tracks. Deconvolution reduces the length
spread caused by the uncertainties. Hereby tracks are organized
according to age, the short tracks being older than the long tracks.