Radiocarbon dating journals

Here, freshwater influence causes reservoir ages to vary between 250 and 700 C years during the period 5400 BC - AD 700.

The examples in this study show clearly that the freshwater reservoir effect can seriously corrupt radiocarbon dating at inland sites.

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Modern samples of water, aquatic plants, fish and shellfish from the rivers Alster and Trave have been collected.

Archaeological samples were provided from the Late Mesolithic sites of Kayhude/Alster and Schlamersdorf/Trave.

The moraines have calcium carbonate contents of up to 20% ([] for details on the study area).

In the same region, the impact of the freshwater reservoir effect on radiocarbon dating of pottery was studied.

At least theoretically, the freshwater reservoir effect (FRE) has been known for a longer time than the marine reservoir effect.

The most common cause of high apparent ages in freshwater systems is the presence of dissolved ancient carbonates, leading to the so-called hardwater effect.

Reservoir effects should therefore be considered whenever food remains on pottery or the bones of omnivores are radiocarbon dated - irrespective of the site’s distance to the coast.

Throughout the entire history of radiocarbon dating, new sources of error have appeared, have been examined, and corrections have been found. This type of sample is called samples) or in freshwater systems such as lakes and rivers.

Depending on size, the outer 10–25% of the shell was dissolved with 1M HCl.

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