The Geological
Timescale Versus Radiometric Dating
By
Paul Nethercott
October 2014
The Rhyacian Period
2,300 To 2,500 Million Years Ago
1. Sr, Nd, and O isotope geochemistry,
Earth and Planetary Science Letters, Volume 99, 1990, Pages 362-379
|
87Rb/86Sr |
147Sm/144Nd |
|
1,092 |
400 |
|
400 |
194 |
|
398 |
123 |
|
392 |
122 |
|
389 |
121 |
|
207 |
120 |
|
139 |
119 |
|
130 |
|
|
125 |
|
|
122 |
|
|
121 |
|
|
120 |
|
|
119 |
|
|
118 |
|
2. Carbonate Pb-Pb ages of the Wittenoom Formation,
Precambrian Research, Volume 72 (1995), Pages 247-261
|
207Pb/206Pb |
207Pb/206Pb |
|
5,086 |
4,843 |
|
5,070 |
4,824 |
|
5,046 |
4,803 |
|
4,989 |
4,791 |
|
4,967 |
4,781 |
|
4,965 |
4,760 |
|
4,933 |
4,689 |
|
4,913 |
4,652 |
|
4,883 |
4,517 |
|
4,883 |
4,420 |
|
4,878 |
4,353 |
|
4,874 |
4,264 |
|
4,869 |
4,054 |
|
4,862 |
3,990 |
|
4,845 |
3,959 |
3. Garnet Granulite Xenoliths,
Journal Of Petrology, 2001, Volume 42, Number 4, Pages 731-763
|
206Pb/238U |
206Pb/238U |
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
|
40,059 |
13,404 |
5,295 |
5,073 |
4,983 |
|
35,742 |
13,404 |
5,283 |
5,070 |
4,972 |
|
34,459 |
12,747 |
5,271 |
5,068 |
4,963 |
|
33,978 |
12,622 |
5,229 |
5,068 |
4,956 |
|
28,118 |
12,165 |
5,227 |
5,066 |
4,953 |
|
27,127 |
11,432 |
5,220 |
5,055 |
4,952 |
|
25,884 |
10,956 |
5,219 |
5,052 |
4,951 |
|
21,209 |
10,956 |
5,210 |
5,040 |
4,949 |
|
21,092 |
10,049 |
5,189 |
5,035 |
4,941 |
|
20,648 |
9,250 |
5,189 |
5,033 |
4,937 |
|
17,527 |
7,382 |
5,148 |
5,031 |
4,931 |
|
16,336 |
7,188 |
5,148 |
5,030 |
4,929 |
|
16,026 |
6,792 |
5,132 |
5,028 |
4,924 |
|
15,626 |
6,759 |
5,105 |
5,027 |
4,922 |
|
15,018 |
6,265 |
5,105 |
5,023 |
4,914 |
|
14,371 |
5,865 |
5,092 |
5,022 |
4,913 |
|
14,272 |
5,177 |
5,090 |
5,015 |
4,913 |
|
13,724 |
4,977 |
5,079 |
5,012 |
4,909 |
|
13,724 |
|
5,074 |
4,993 |
|
4. African Peridotite Xenoliths,
Geochimica et Cosmochimica Acta, 1989, Volume 53, Page 1591
|
187Os/186Os |
87Rb/86Sr |
|
2,659 |
1,172 |
|
2,403 |
1,100 |
|
2,226 |
1,094 |
|
2,167 |
160 |
|
1,655 |
119 |
|
1,458 |
100 |
|
1,261 |
92 |
|
1,221 |
90 |
|
749 |
87 |
|
729 |
86 |
|
39 |
85 |
|
-217 |
83 |
|
-591 |
-127 |
|
-3,309 |
|
|
147Sm/144Nd |
187Re/186Os |
187Re/186Os |
|
660 |
-1 |
2,740 |
|
1,080 |
- |
- |
|
690 |
2,790 |
2,500 |
|
1,420 |
- |
- |
|
700 |
-1 |
550 |
|
1,130 |
- |
- |
|
1,330 |
2,540 |
1,790 |
|
1,270 |
- |
- |
|
590 |
-1 |
1,890 |
|
1,400 |
- |
- |
|
850 |
110 |
40 |
|
- |
970 |
170 |
|
- |
5,650 |
2,890 |
|
- |
1,480 |
1,100 |
|
- |
3,890 |
1,540 |
|
1,530 |
2,520 |
1,700 |
|
1,400 |
- |
- |
|
570 |
- |
- |
|
1,630 |
2,540 |
1,980 |
|
520 |
90 |
-1 |
|
1,070 |
12,600 |
2,460 |
References
1. Sr, Nd, and O isotope geochemistry, Earth and Planetary Science Letters, Volume 99, 1990, Pages 362-379
2. Carbonate Pb-Pb ages of the Wittenoom Formation, Precambrian Research, Volume 72 (1995) , Pages 247-261
3. Garnet Granulite Xenoliths, Journal Of Petrology, 2001, Volume 42, Number 4, Pages 731-763
4. African Peridotite Xenoliths, Geochimica et Cosmochimica Acta, 1989, Volume 53, Page 1591