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This affects the ratio of 14 C to 12 C in the different reservoirs, and hence the radiocarbon ages of samples that originated in each reservoir. If we want to use any particular process for geological time determination we must know initial state zero point and a function describing dependence of the investigated process on time time scale.

Other open system problems are caused by the migration of atoms ions within structure of fossil material. Traditionally this includes only the statistical counting uncertainty and some labs supply an "error multiplier" that can be multiplied by the uncertainty to account for other sources of error in the measuring process.

Speleothem studies extend 14C calibration Relatively recent evidence has allowed scientists to refine the knowledge of one of the underlying assumptions. Such decay counting, however, is relatively insensitive and subject to large statistical uncertainties for small samples.

Traditionally this included only the statistical counting uncertainty. Contamination Any addition of carbon to a sample of a different age will cause the measured date to be inaccurate.

Two related times can be defined: Speleothem studies extend 14C calibration Relatively recent evidence has allowed scientists to refine the knowledge of one of the underlying assumptions. This is believed negligible since most erosion will flow into the sea [7].

Uranium series dating of contaminated calcite using leachates alone. Contamination with modern carbon causes a sample to appear to be younger than it really is: This decline is known as the Suess effectand also affects the 13C isotope.

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