scholarly journals University of Miami Radiocarbon Dates XIII

Radiocarbon ◽  
1978 ◽  
Vol 20 (3) ◽  
pp. 502-512 ◽  
Author(s):  
P M Calvert ◽  
D S Introne ◽  
J J Stipp

The following radiocarbon dates are a partial list of samples measured since Sept 1977. The chemical and counting procedures are the same as indicated previously (R, 1978, v 20, p 134-138).

Radiocarbon ◽  
1977 ◽  
Vol 19 (1) ◽  
pp. 118-126 ◽  
Author(s):  
D Piepgras ◽  
J J Stipp

The following radiocarbon measurements are a partial list of projects and samples dated since January 1975. The technique used is described in R, v 16, pp 402-408 and R, v 18, pp 210-220. Dates are calculated using 14C half-life of 5568 yr and errors are reported as one-standard deviation.


Radiocarbon ◽  
1983 ◽  
Vol 25 (1) ◽  
pp. 137-142
Author(s):  
R A Johnson ◽  
G E Treadgold ◽  
J J Stipp

The following radiocarbon dates are a partial list of samples measured for a variety of projects and materials since August 1980. Chemical and counting procedures remain the same as indicated in R, v 20, p 274–282.


Radiocarbon ◽  
1983 ◽  
Vol 25 (3) ◽  
pp. 930-935 ◽  
Author(s):  
D G Hood ◽  
R A Johnson ◽  
J J Stipp

The following radiocarbon dates are a partial list of samples measured for a variety of projects and materials since May 1982. Chemical and counting procedures remain the same as indicated in R, v 20, p 274–282.Calculations are based on the 5568-year Libby 14C half-life. Precision is reported as one-standard deviation based only on statistical counting uncertainties in the measurement of the background, NBS modern standard, and sample activities. δ13C values are measured relative to PDB and reported ages are corrected for isotopic fractionation by normalizing to −25‰.


Radiocarbon ◽  
1981 ◽  
Vol 23 (1) ◽  
pp. 136-144
Author(s):  
Sharon Crabtree ◽  
Richard Johnson ◽  
J J Stipp ◽  
Darden Hood

The following radiocarbon dates are a partial list of samples measured for a variety of projects and materials since May 1980. Chemical and counting procedures remain the same as indicated in R, v 20, p 274–282.


Radiocarbon ◽  
1980 ◽  
Vol 22 (4) ◽  
pp. 1116-1124
Author(s):  
R A Johnson ◽  
J J Stipp

The following radiocarbon dates are a partial list of samples measured for a variety of projects and materials since August 1979. Chemical and counting procedures remain the same as indicated in R, v 20, p 274-282.


Radiocarbon ◽  
1977 ◽  
Vol 19 (2) ◽  
pp. 326-331 ◽  
Author(s):  
D Piepgras ◽  
J J Stipp

The following radiocarbon measurements are a partial list of geologic samples dated since September 1975. The technique used is described in R, v 18, p 210-220. Dates are calculated using a 14C half-life of 5568 yr and errors are reported as one standard deviation. This includes only the counting errors on the sample, background and modern standard.


Radiocarbon ◽  
1977 ◽  
Vol 19 (3) ◽  
pp. 453-459
Author(s):  
D Piepgras ◽  
M A Allison ◽  
T Dlugos ◽  
J J Stipp

The following dates are a partial list of archaeologic and geologic samples measured since spring of 1976. The method used is described by (Stipp et al, 1976). Errors reported are one standard deviation and include only the counting errors on the unknown sample, background, and modern standard. No corrections have been made on these dates. Sample descriptions and comments are based on information supplied by the submitters.


Radiocarbon ◽  
1978 ◽  
Vol 20 (2) ◽  
pp. 274-282 ◽  
Author(s):  
M Calvert ◽  
Kim Rudolph ◽  
J J Stipp

The following radiocarbon dates are a partial list of samples measured since March 1977. The techniques used are the same as reported in R, v 16, p 402-408, and modified in R, v 18, p 210-220, with the following exception. A third liquid scintillation counter (Beckman LS-100) has been added and the shortened, low-K glass-counting vials have been replaced with teflon vials of Noakes (1975) design. Backgrounds on the counters were thus reduced from 9.1 cpm, 8.8 cpm and 4.9 cpm to 3.8 cpm, 3.5 cpm and 2.8 cpm, respectively, with an attendant small increase in efficiency.


Radiocarbon ◽  
1978 ◽  
Vol 20 (1) ◽  
pp. 134-138 ◽  
Author(s):  
D Piepgras ◽  
M M Calvert ◽  
J J Stipp

The following dates are a partial list of geologic samples dated since December 1976. The method used is described by (Stipp et al, 1976). Ages were calculated using a half-life of 5568 years. Errors reported are one standard deviation and include only the counting errors on the unknown sample, background and modern standard. There have been no corrections made on these dates. Sample descriptions and comments were written, based on information supplied by the submitters.


Radiocarbon ◽  
1980 ◽  
Vol 22 (4) ◽  
pp. 1125-1129 ◽  
Author(s):  
R A Johnson ◽  
J J Stipp

The following radiocarbon dates are a partial list of samples measured for a variety of projects and materials since January 1980. Chemical and counting procedures remain the same as indicated in R v 20, p 274-282.


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