Computerized Modeling of Rock-Varnish Dating
419
Table 2 Electron microprobe analyses of rock varnish samples from Makhtesh Ramon
(Camebax)
Sample no
12(RVT-15)
l3(RVT-20)
RVT-18
RVT-18KP
RVT-21
RVT-21a
RVT-22
RVT-23a
RVT-23b
Abs.
Na
Mg
Al
Si
height a
30
0.81
3.01 12.06 19.99
30
0.67 3.17 l3.25 25.89
30
0.21
3.67 12.24 22.19
30
0.9
2.92 12.72 23.82
5
0.81
3.03 1l.5
24.23
5
0.48 3.43 14.48 24.29
5
0.67 3.82 15.01 23.23
5
0.46 2.7
11.23 23.84
30
0.77 2.02 9.38
27.66
30
0.88 3.36 14.7
23.75
30
0.95 2.87 14.33 23.64
30
0.41
2.71 l3.23 22.43
30
0.32 3.31 l3.35 22.21
30
30
30
25
25
25
25
25
25
25
25
25
0.54 4.ll 12.8
25.21
0.29 2.51 11.09 26.1
0.03 2.03 9.7
29.l3
0.91
2.91 14.93 20.66
0.29 2.54 11.71 25.56
0.84 3.05 15.65 22.35
0.2
2.95 l3.62 25.49
0.75 3.23 14.86 22.9
1.39 3.69 12.62 24.71
0.68 2.74 l3.43 20.14
0.37 2.47 12.55 21.57
1.33 2.78 l3.87 18.57
K
Ca
Ti
Cr
Mn
1.47 1.48 0.37 0.01 5.22
1.57 0.94 0.4
0.01 0.01
1.6
1.38 0.61 0.01 3.91
1.67 1.39 0.44 0.01
1.95
1.93 1.12 0.43 0.01 3.94
1.78 0.96 0.45 0.02 1.36
1.66 0.92 0.36 0.01 2.14
1.94 1.27 0.61 0,01 2.87
1.07 1.06 0.51
0,01 0.17
1.77 1.19 0.71
0.03 0.51
1.68 1.5
0.47 0.01 0.64
1.85 1.42 0.38 0.1
4.42
1.53 2.24 0.46 0.01
3.31
1.43 0.61
0.52 0,01 0.08
1.89 0.7
0.59 0.01 2.69
1.21
1.35 0.57 0.03 1.6
1.21
1.62 0.45 0.08 4.19
1.19 1.26
1.39 1.14
1.51 0.93
1.79 1.14
2.34 1.42
1.7
1.5
1.18 1.47
1.19 1.5
0.45 0.01 3.52
0.4
0.01 2.5
0.33 0.05 O.ll
0.43 0.02 1.76
0.4
0,01 0.19
0.45 0.06 6.76
0.69 0.01 4.39
0.31 0.1
7.76
Control samples
0.32
0.22
1.37 10.85 17.99
1.87
1.39 12.40 18.33
1.59
1.82 0.68 0.01
9.16
1.18 0.43 0.01 12.2
Fe
11.99
6.71
9.3
8.24
7.43
5.81
5.66
9.7
10.42
6.27
7.42
7.83
8.0
7.54
7.67
6.69
8.06
7.09
6.5
7.47
6.86
6.7
8.66
1.73
9.41
16.06
11.07
0.25
1.42 11.70 18.16
1.77 1.38 0.35 0,01 14.30 10.21
0.16
1.23 10.73 19.71
1.74 1.74 0.59 0.01 11.50 11.60
0.18
0.l3
0.15
0.04
1.76 12.28 20.88
1.61 12.51 20.55
1.70 11.15 19.46
1.36 9.21
19.66
1.54 1.27 0.44 0.01
7.71
1.48 1.20 0.37 0.01 8.72
1.51 2.68 0.50 0.01 l3.47
1.15 3.16 0.42 0,01 11.26
11.76
10.69
7.69
12.98
0.08
1.76 12.56 20.54
1.25 1.83 0.84 0.02 7.83
10.65
0.63 2.50 l3.36 22.08
2.10 1.49 0.52 0.02 6.89
7.78
0.72 2.40 11.37 21.52
2.12 1.58 0.41
0,01 8.59
8.72
0.73 2.08 12.01 21.0
1.89 1.78 0.50 0.01 8.50
9.83
0.19
1.79 12.43 20.47
1.5
1.24 0.38 0.01 8.17
11.65
0.12
1.68 l3.00 19.62
1.54 1.22 0.55 0.05 8.49
11.94
0.20
1.73 12.59 19.30
1.34 1.20 0.43 0.03 9.83
11.82
419
Table 2 Electron microprobe analyses of rock varnish samples from Makhtesh Ramon
(Camebax)
Sample no
12(RVT-15)
l3(RVT-20)
RVT-18
RVT-18KP
RVT-21
RVT-21a
RVT-22
RVT-23a
RVT-23b
Abs.
Na
Mg
Al
Si
height a
30
0.81
3.01 12.06 19.99
30
0.67 3.17 l3.25 25.89
30
0.21
3.67 12.24 22.19
30
0.9
2.92 12.72 23.82
5
0.81
3.03 1l.5
24.23
5
0.48 3.43 14.48 24.29
5
0.67 3.82 15.01 23.23
5
0.46 2.7
11.23 23.84
30
0.77 2.02 9.38
27.66
30
0.88 3.36 14.7
23.75
30
0.95 2.87 14.33 23.64
30
0.41
2.71 l3.23 22.43
30
0.32 3.31 l3.35 22.21
30
30
30
25
25
25
25
25
25
25
25
25
0.54 4.ll 12.8
25.21
0.29 2.51 11.09 26.1
0.03 2.03 9.7
29.l3
0.91
2.91 14.93 20.66
0.29 2.54 11.71 25.56
0.84 3.05 15.65 22.35
0.2
2.95 l3.62 25.49
0.75 3.23 14.86 22.9
1.39 3.69 12.62 24.71
0.68 2.74 l3.43 20.14
0.37 2.47 12.55 21.57
1.33 2.78 l3.87 18.57
K
Ca
Ti
Cr
Mn
1.47 1.48 0.37 0.01 5.22
1.57 0.94 0.4
0.01 0.01
1.6
1.38 0.61 0.01 3.91
1.67 1.39 0.44 0.01
1.95
1.93 1.12 0.43 0.01 3.94
1.78 0.96 0.45 0.02 1.36
1.66 0.92 0.36 0.01 2.14
1.94 1.27 0.61 0,01 2.87
1.07 1.06 0.51
0,01 0.17
1.77 1.19 0.71
0.03 0.51
1.68 1.5
0.47 0.01 0.64
1.85 1.42 0.38 0.1
4.42
1.53 2.24 0.46 0.01
3.31
1.43 0.61
0.52 0,01 0.08
1.89 0.7
0.59 0.01 2.69
1.21
1.35 0.57 0.03 1.6
1.21
1.62 0.45 0.08 4.19
1.19 1.26
1.39 1.14
1.51 0.93
1.79 1.14
2.34 1.42
1.7
1.5
1.18 1.47
1.19 1.5
0.45 0.01 3.52
0.4
0.01 2.5
0.33 0.05 O.ll
0.43 0.02 1.76
0.4
0,01 0.19
0.45 0.06 6.76
0.69 0.01 4.39
0.31 0.1
7.76
Control samples
0.32
0.22
1.37 10.85 17.99
1.87
1.39 12.40 18.33
1.59
1.82 0.68 0.01
9.16
1.18 0.43 0.01 12.2
Fe
11.99
6.71
9.3
8.24
7.43
5.81
5.66
9.7
10.42
6.27
7.42
7.83
8.0
7.54
7.67
6.69
8.06
7.09
6.5
7.47
6.86
6.7
8.66
1.73
9.41
16.06
11.07
0.25
1.42 11.70 18.16
1.77 1.38 0.35 0,01 14.30 10.21
0.16
1.23 10.73 19.71
1.74 1.74 0.59 0.01 11.50 11.60
0.18
0.l3
0.15
0.04
1.76 12.28 20.88
1.61 12.51 20.55
1.70 11.15 19.46
1.36 9.21
19.66
1.54 1.27 0.44 0.01
7.71
1.48 1.20 0.37 0.01 8.72
1.51 2.68 0.50 0.01 l3.47
1.15 3.16 0.42 0,01 11.26
11.76
10.69
7.69
12.98
0.08
1.76 12.56 20.54
1.25 1.83 0.84 0.02 7.83
10.65
0.63 2.50 l3.36 22.08
2.10 1.49 0.52 0.02 6.89
7.78
0.72 2.40 11.37 21.52
2.12 1.58 0.41
0,01 8.59
8.72
0.73 2.08 12.01 21.0
1.89 1.78 0.50 0.01 8.50
9.83
0.19
1.79 12.43 20.47
1.5
1.24 0.38 0.01 8.17
11.65
0.12
1.68 l3.00 19.62
1.54 1.22 0.55 0.05 8.49
11.94
0.20
1.73 12.59 19.30
1.34 1.20 0.43 0.03 9.83
11.82