Recrystallization, on the other hand, can affect even the inner layers of a shell. However, we recommend milligrams be sent to allow for an aggressive cleaning prior to the dating and repeat analyses if necessary for confirming results based on quality control measures, at no additional cost to the client. Powdered Carbonates — Please take note that exposure to atmospheric carbon dioxide CO2 may affect the radiocarbon dating results. This phenomenon, accompanied by the conversion of aragonite to calcite, also alters the carbon 14 ratio. Ziplock Bags place in Aluminum foil if sample is small or can be crushed during shipment. Given enough material, the lab typically etches off the outer half of the shell to eliminate any potential secondary carbonate.
AMS labs perform pretreatment before carbon 14 dating to remove all possible contaminants that would lead to inaccurate results.
Young Earth Creation Science Argument Index
Studies show that the residence time of carbon 14 in the atmosphere ranges between 6 years and 10 years while the residence time of carbon 14 in oceans could take thousands of years. Please send your samples in small boxes instead of envelopes to protect the samples. This phenomenon is latitude dependent and occurs as a consequence of trade winds. If you are not a Christian, and you have been holding out on making a decision for Christ because the Church always preached a message that was contrary to what you saw in the scientific world, then rest assured that the Bible is the inerrant Word of God, and you can believe in Christ and receive salvation, while still believing in an old earth. Generally, the more material provided the better chance of yielding good results. Shellfish obtain carbon from the biosphere for shell building.