Scientists want measurements that are both accurate and precise…
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), then many of your boulders may have rolled or been covered with snow. It is the job of the scientist to sample carefully to minimise these potential sources of inaccuracies in cosmogenic nuclide dating.
Radiocarbon dating relies on the regular radioactive decay of carbon-14 in organic matter.
Be) atoms in a boulder yield measurements of an exposure age with very low uncertainties. This analytical uncertainty does not take into account geological uncertainties – has your boulder rolled over, or has it been reworked and does it contain Be from a previous exposure?
These factors may result in you having an exposure age that is both precise and inaccurate.
On a few small islands around the Antarctic Peninsula, however, you can see evidence of past glaciations through glacier sediments and landforms.
On the next few pages, you can learn more about different kinds of glacial landforms found around Antarctica.
Scientists must understand the sources of error in their dating techniques before calculated ages can be reliably used.
What other sources of inaccuracies are there in Quaternary chronostratigraphy?
The precision is effectively the laboratory uncertainty.