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It is estimated that nearly 90% of all measurements made at the more than 50 active accelerator mass spectrometry laboratories are radiocarbon dates.This dramatic increase in the number of radiocarbon dates is driving the demand for a radiocarbon calibration program that spans the entire radiocarbon timescale from the present to 55,000 years BP.I read the scientific article on the carbon dating done on the Jericho site written by Bruins and Van Der Plicht.When I did the math from their results section of the YBP, they all turned out to be right around the year 1400 .These may be involved with uncertain reservoir corrections, especially for shell dates, corrections for isotopic fractionation and failure to specify whether the old or new half-life was used.The individual laboratory code number, which is prefixed to radiocarbon measurements from that particular lab.When presenting your results, be sure to round off to the nearest "10". Be sure to consider the following: The CALIB program can also plot these results on a graph.To do this, you need to scroll down until you find the box shown below.
You have sent your samples off to the lab and received the results back. Because the date is only the conventional age, you need to transform it to calendar years by using a calibration program. CALIB 4.4 These figures tell you that the most likely age of your sample is between AD 13 (a 96.3% chance). It is also possible (though not very likely) that the sample dates to the period between AD15 (3.6%) or AD13 (0.1%).In addition, are there any locally or regionally available marine reservoir corrections? Be sure to incorporate these adjustments into your calibrations, if necessary, and provide a list of the offset that you used.Alternatively, you may choose to use another calibration program such as Ox Cal to calibrate and/or report your dates.Thus, ANU-3546 refers to sample 3546 measured at the Radiocarbon Laboratory at the Australian National University, for example.For a list of current radiocarbon laboratories and Lab code numbers, click here. Any radiocarbon age which possesses a reservoir correction should be termed a Reservoir Corrected age and this age should be given in addition to the Conventional Radiocarbon Age.