tivity on the carmel faul

Sample name 230/238 err 234/238 err 232/238 err 230/232 err Det. Age (y) + - Type
DN-51 pre III 0.04590 0.00121 1.04455 0.00108 0.004875 0.000019 10.15 0.27 y 4886 131 131 E
DN-2-3 0.04973 0.00230 1.04588 0.00237 0.002880 0.000022 22.50 1.05 n 5296 250 250 A
DN-2-4 0.05875 0.00206 1.04588 0.00152 0.004098 0.000024 16.88 0.60 y 6285 227 227 A
DN-66c-pre III 0.08397 0.00193 1.05658 0.00100 0.038891 0.000187 1.93 0.05 y 9000 1495 1475 E
DN-17-POST 0.09572 0.00114 1.05396 0.00139 0.054353 0.000145 1.84 0.02 y 10346 129 129 A
230
Th/U Age = 4.83 ±0.80 ka
1.08
data-point error ellipses are 2σ
Initial 234 U/ 238 U = 1.045 ±0.016
MSWD = 33, probability = 0.000
1.06
234 U/
238 U
1.04
1.02
0.03 0.05 0.07 0.09 0.11
230 Th/ 238 U
Figure 20: 5ka sample age cluster; 1. Sample isotopic ratio data table (red-pre samples, black-post
samples). 2. Isochron plot and age calculation (red crosses-uncorrected ages, green crossesprojected
data points). 3. Distribution of cluster samples in Denya Cave (red dots).
A cluster of ages at ca. 5ka is
shown in Figure 20. This age is
post
10.35ka
based on four pre- and post-seismic
A-1
event samples, from around the
E-1
cave, giving the age of the event a
pre III
9ka
viable constraint. Two of the
samples are of type A seismites and
two are of poor quality (type E)
DN-1
A-1
4-post
6.28ka
3-post
5.3ka
E-1
seismites (Fig. 21). The age
calculation yielded a minimal
Seismic contact
pre III
4.89ka
scatter isochron plot.
Figure 21: Age cluster ~5ka samples
56