tivity on the carmel faul

Table 3: Isochron sample's results of low detrital content samples: a. Calculated isotopic ratios
and ages. b. Calculated slopes and y-axis intercepts for correction factor calculations. Isochron
plot: yellow-DN-4 pre, red-DN-6c pre, green-DN-7 pre, blue-DN-7 post. Unreliable results are
marked in orange.
a
Sample name 230/234 err 234/230 err 232/234 err 230/232 err Age(y) + -
DN-4 pre (top) 0.14265 0.00169 7.01033 0.08305 0.013535 0.000016 10.54 0.13 16717 214 214
DN-4 pre II (post) 0.16915 0.00276 5.91195 0.09649 0.025442 0.000032 6.65 0.11 20132 362 361
DN 4 pre 0.16814 0.00134 5.94752 0.04748 0.001572 0.000002 106.97 0.87 19981 175 175
DN3y(dn4-pre) 0.20100 0.00267 4.97501 0.06616 0.006784 0.000008 29.63 0.41 24343 364 362
Sample name 230/234 err 234/230 err 232/234 err 230/232 err Age(y) + -
DN8y(dn6C pre) 0.14291 0.00280 6.99729 0.13702 0.023083 0.000026 6.19 0.12 16749 355 354
DN7y(dn6C pre) 0.28225 0.00319 3.54296 0.04006 0.001928 0.000003 146.36 1.67 35921 483 481
DN 6C pre 0.27134 0.00237 3.68536 0.03222 0.001525 0.000001 177.99 1.57 34300 352 352
DN-6c pre I 0.18607 0.00207 5.37436 0.05989 0.019748 0.000027 9.42 0.11 22317 276 276
DN-6c pre II 0.27851 0.00236 3.59048 0.03039 0.003278 0.000005 84.97 0.78 35363 354 354
Sample name 230/234 err 234/230 err 232/234 err 230/232 err Age(y) + -
DN 7 pre 0.20218 0.00145 4.94600 0.03553 0.010228 0.000011 19.77 0.15 24511 198 198
DN-7-45 0.26418 0.00166 3.78527 0.02379 0.010182 0.000014 25.95 0.17 33202 245 245
DN-7-43 0.29038 0.00254 3.44376 0.03012 0.001742 0.000002 166.70 1.50 37142 389 388
DN-7-44 0.28619 0.00171 3.49419 0.02083 0.001982 0.000004 144.37 0.86 36515 262 262
Sample name 230/234 err 234/230 err 232/234 err 230/232 err Age(y) + -
DN 7 post 0.10624 0.00123 9.41238 0.10919 0.007832 0.000008 13.56 0.16 12206 150 150
DN 7postB 0.09668 0.00067 10.34369 0.07126 0.007685 0.000008 12.58 0.09 11050 80 80
DN-7-46 0.10627 0.00134 9.40958 0.11876 0.004735 0.000007 22.44 0.29 12208 163 163
DN-7-46b-post 0.08100 0.00166 12.34566 0.25263 0.002975 0.000006 27.23 0.56 9181 196 196
DN-7-47 0.09181 0.00134 10.89230 0.15885 0.002397 0.000002 38.30 0.56 10464 160 160
b
DN-4 pre Slope ± Intersect ± 230/232d 232/238d Av. 232/238d
all -8 82 0.27 0.99 -10.9589 -0.278221 0.076689247
No DN3y 31 9700 0 130 31 0.098355
DN-6c Slope ± Intersect ± 230/232d 232/238d
all -6 1.8 0.292 0.025 -8.474576 -0.359782
partI -5.2 2.4 0.289 0.025 -7.313643 -0.416892
partII 12 310 0.25 0.69 16 0.190563
DN-7 pre Slope ± Intersect ± 230/232d 232/238d
all 174 430 2.9 3 -91.57895 -0.033294
DN-7 post Slope ± Intersect ± 230/232d 232/238d
all 6 12 0.066 0.067 6.423983 0.009531
230 Th/
234 U
0.30
0.26
0.22
0.18
0.14
0.10
data-point error crosses are 2σ
No-47 7 26 0.05 0.16 7.368421 0.008309 0.06
0.00 0.04
232 Th/ 234 U
In order to determine the nature of the detrital component found in samples from
Denya Cave and to establish its origin, four different speleothem samples were dissolved
with two different methods. Part of the sample was dissolved with weak acetic acid,
which only dissolves the carbonate component and does not affect the clays, and the other
underwent total dissolution with HNO 3 and HF (see Appendix II-I,II). The samples that
were treated with acetic acid were then placed in a centrifuge, which enabled the
separation of all insoluble matter (Appendix II-I,II). A comparison of 230 Th/ 232 Th ratios
between the two methods can be seen in Table 4. Three observations can be discerned
from the results of this experiment; (1) 230 Th/ 232 Th is quite low (