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University of London Fission Track Research Group, Department of Geological Sciences, University and Birkbeck Colleges, Gower Street, London WC1E 6BT, UK
Determination of single crystal ages by fission track dating analysis of zircons (and subordinately apatites) within a detrital heavy mineral assemblage, together with frequency distribution and radial plot analysis of the measured ages, permits identification of different age modes. Such modes may characterize the provenance of a sediment and assist in defining source areas. A limitation of the application is the thermal stability of tracks within a mineral above which tracks are lost and ages partially reset: in broad terms over geological time 200250°C for zircon and <100°C for apatite. Synopses are presented of published fission track provenance studies in north central Victoria, northeastern Tasminia, Barbados, the Rockall Trough, the English Wealden, Mexico, Utah and the Central Alps.
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