Cosmogenic nuclide dating


Here’s an example: The lines are contours of burial time in Myr. This is the foundation of the method of cosmogenic-nuclide burial dating.

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Here is an example of a Be-10/Ne-21 two-nuclide diagram from one of my papers: Here I have put Ne-21 (the longer-lived nuclide) on the x-axis and the Be-10/Ne-21 ratio on the y-axis. I think no matter what the nuclides involved, you should always do it the same way as is commonly done for Al-26/Be-10 diagrams, so that burial goes down.

So, again, exposure goes to the right and burial goes down. Although I have not made a systematic historiographic study of this phenomenon, I believe that the European style is largely just due to the fact that the “Cosmo Calc” software put together by Pieter Vermeesch does it this way. Nearly all the two-nuclide diagrams in the existing literature involve the normal implementation of the Al-26/Be-10 diagram, so anyone familiar with this literature expects exposure to go to the right on a tw0-nuclide diagram, and burial to go down.

Firstly I had to crush the samples in the workshop to shards, and then grind them down on a disc miller.

This was very noisy and dusty, and fairly hard work, but good fun.

The LDEO Cosmogenic Nuclide Group develops terrestrial cosmogenic nuclide techniques and applies those as chronometers and tracers in the Earth Sciences.