Bomb carbon peak dating
Radiocarbon dating of recent water samples, aquatic plants, and animals, shows that age differences of up to 2000 C years can occur within one river.The freshwater reservoir effect has also implications for radiocarbon dating of Mesolithic pottery from inland sites of the Ertebølle culture in Northern Germany.Water rich in dissolved ancient calcium carbonates, commonly known as hard water, is the most common reason for the freshwater reservoir effect. Although it has been known for more than 60 years, it is still less well-recognized by archaeologists 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.
It is therefore possible to study the influence of the freshwater reservoir effect on radiocarbon dates in the Limfjord over long time scales.