Cosmogenic radionuclide dating

Rates of nuclide production must be estimated in order to date a rock sample. This can result in a complex exposure history. This is typically characterised by spread of exposure ages across a single landform. Frost heave in periglacial environments can repeatedly bury and exhume boulders, resulting in a complex exposure age. For a rock to be suitable for cosmogenic nuclide dating, quartz must occur in the rock in sufficient quantities and in the sufficient size fraction. By using this site, you agree to the Terms of Use and Privacy Policy.

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This can result in a complex exposure history.

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Surface exposure dating

The parent isotopes are the most abundant of these elements, and are common in crustal material, whereas the radioactive daughter nuclei are not commonly produced by other processes. For a rock to be suitable for cosmogenic nuclide dating, quartz must occur in the rock in sufficient quantities and in the sufficient size fraction. This page was last edited on 26 Juneat The basic principle states that a rock on a moraine originated from underneath the glacier, where it was plucked and then transported subglacially. By the time the cosmic ray cascade reaches the surface of Earth it is primarily composed of neutrons.

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