tivity on the carmel faul

Sample name 230/238 err 234/238 err 232/238 err 230/232 err Det. Age (y) + - Type
DN-34a-pre II 0.7968 0.0060 1.0664 0.0032 0.004753 0.000016 108.57 0.76 n 146004 2253 2203 A
DN-36 post-II 0.7230 0.0048 0.9818 0.0012 0.118289 0.000354 7.56 0.05 y 146262 1858 2302 A
DN-33c2-pre 0.7893 0.0043 1.0561 0.0022 0.016461 0.000033 48.73 0.24 146544 1674 1644 A
DN-46 pre II 0.7959 0.0065 1.0564 0.0019 0.008694 0.000023 92.76 0.75 y 149020 2619 2556 A
230
Th/U Age = 147.6 ±5.4 ka
1.10
data-point error ellipses are 2σ
Initial 234 U/ 238 U = 1.100 ±0.012
MSWD = 5.4, probability = 0.000
1.08
1.06
234 U/
238 U
1.04
1.02
1.00
0.98
0.96
0.70 0.72 0.74 0.76 0.78 0.80 0.82
230 Th/ 238 U
Figure 34: 148ka 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. 148ka is shown in Figure 34. This age is based on a relatively
accurate isochron plot, derived from four different type A speleo-seismites (Fig. 35).
DN-46
A-3
DN-36
A-5
Samples DN-36, DN-34
and DN-46 are flowstone
cores from the same area of
the cave. It is therefore
pre II
149.02ka
post II
146.26ka
Seismic contact
likely that they recorded
the same event, which is
DN-33c2
DN-34a
A-5
well constrained since they
Seismic contact
Seismic contact
are both pre- and postseismite
samples.
A-2
pre
146.54ka
pre II
146ka
Figure 35: Age cluster
~147ka samples.
63