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Table 1 Dating results for hyperactive samples.

From: Longevity and growth of Acacia tortilis; insights from 14C content and anatomy of wood

Core Sample Lab. Ref. F14C +/- δ13C Calibrated date Intervening GR Overall GR
Umm Dihaysi a I1 TUa-5425 1.045 0.004 -25.2 - -  
Umm Dihaysi a II TUa-5426 1.080 0.005 -25.6 1998.1 (1956.7) 1.13 (0.13)  
Umm Dihaysi a III TUa-5427 1.090 0.005 -24.2 1956.5 (1996.2/1997.4) 0.29 (6.18/15.60) 0.38
Muwaylhah b I TUa-5431 1.130 0.004 -28.8 1993.9 0.63  
Muwaylhah b II TUa-5432 1.158 0.005 -28.4 1990.2 1.93  
Muwaylhah b III TUa-5433 1.303 0.005 -27.0 1979.3 0.77 0.89
Hulus Upper I TUa-5428 1.381 0.006 -24.3 1975.5 0.23 0.23
Jimal a I TUa-5420 1.082 0.005 -27.4 1998.2 0.52  
Jimal a II TUa-5421 1.107 0.005 -25.5 1996.8 0.66  
Jimal a III1 TUa-5422 1.143 0.005 -26.7 1992.8 2.37  
Jimal a IV1 TUa-5423 1.141 0.005 -27.4 1991.3 2.39  
Jimal a V TUa-5424 1.514 0.007 -25.7 1971.0 (1963.0) 2.00 (1.44) 1.87
  1. 14C content (F14C, including measurement error (+/-) and fractionation values (δ13C)), calibrated dates (1 sigma midpoint) and estimated growth rates (GR in mm/yr) are summarised. The intervening GR is estimated, based on the period between the sample under consideration and the next youngest sample. Overall GR is estimated based on the period between the oldest date and sample date (2003).
  2. 1 For ambiguous dates refer to the text for further explanation.