Carbon dating work

04-Oct-2014 08:42 by 7 Comments

Carbon dating work - ashley leggat dating michael seater 2016

Carbon dating the Dead Sea Scrolls refers to a series of radiocarbon dating tests performed on the Dead Sea Scrolls, first by the AMS (Accelerator Mass Spectrometry) lab of the Zurich Institute of Technology in 1991 and then by the AMS Facility at the University of Arizona in Tucson in 1994-95.

Among these were samples from other sites around the Dead Sea, which contained date indications within the text to supply a control for the carbon dating results.

The following table shows all the Qumran-related samples that were tested by Zurich (Z), Tucson (T) and Libby (L).

The column headed "14C Age" provides a raw age before 1950 for each sample tested.

This represents the ideal date for the amount of 14C measured for the sample.

However, as the quantity of 14 absorbed by all life fluctuates from year to year, the figure must be calibrated based on known fluctuation.

This calibrated range of dates is represented in the last column, given with a 2-sigma error rating, which means at 95% confidence.

With the exception of the first text from Wadi-ed-Daliyeh, the texts in the table below are only those from the caves around Qumran.The table orders them chronologically, based on 14C age.Many of the date ranges provided are actually two date ranges, for example the Habakkuk Commentary (#13), which is given as 160-148 or 111-2 CE.The section of the calibration curve for the 14C age of the Habakkuk Commentary is complex, so that the 14C age of 2054 cuts through a few spikes on the curve, providing two date ranges.The Great Isaiah Scroll 1QIsa has been tested three times, once by Libby, once at Zurich and once at Tucson.The results from the latter two were almost identical, which is a good indicator of the basic accuracy of this dating method.

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