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AMS dates are therefore more precise and require smaller samples.

For more detailed information on this and other dating techniques used in archaeology, see the Dating in Archaeology Short Course.

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Project 560-023 is located within the Tularosa Basin and includes samples from threeareas (FB 1579, FB 1769, and FB 1778).

Samples from a roaster, a possible roaster, and apithouse were AMS radiocarbon dated and examined for the FTIR and XRF signatures.

Two ofthe features yielded sufficient visible charcoal to date, while the third required recovery ofmicroscopic charcoal fragments.

AMS RADIOCARBON DATING, FTIR, AND XRF ANALYSIS OF SAMPLES FROM PROJECT 560-023, FB 1579, FB 1769, AND FB 1778, FORT BLISS, NEW MEXICO.

Definition: AMS (Accelerator Mass Spectrometry) radiocarbon dating is a way to obtain radiocarbon dates from samples that are far tinier than that needed for standard radiocarbon dating.

Standard c14 dates require amounts of between 1 and 10 grams of charcoal; AMS can use as little as 1-2 milligrams, and under special circumstances to samples as small as 50-100 micrograms.

In standard radiocarbon dating, scientists perform a limited or proportional count of the decaying C14 atoms.

In AMS dating, researchers use an accelerator-based mass spectrometer to count all the C14 atoms, rather than just those atoms which are decaying.

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