The Geological
Timescale Versus Radiometric Dating
By
Paul Nethercott
November 2014
The Meso Archean Period
3,200 To 3,600 Million Years Ago
1. The Siberian Craton,
Geochimica et Cosmochimica Acta, 1995, Volume 59, Number 5, Page 970
|
187Os/186Os |
187Os/186Os |
|
2,777 |
315 |
|
2,403 |
256 |
|
2,226 |
256 |
|
2,167 |
197 |
|
1,733 |
-729 |
|
1,320 |
-1,576 |
|
1,280 |
-6,461 |
|
886 |
-19,107 |
|
847 |
-34,904 |
|
670 |
-477,860 |
|
512 |
-1,504,097 |
|
492 |
-1,584,857 |
2. Argon-40/Argon-39 Age Determinations,
Meteoritics & Planetary Science Volume 33, Page 921-935 (1998)
|
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
|
6,930 |
4,200 |
3,500 |
3,240 |
3,100 |
|
6,240 |
4,070 |
3,410 |
3,230 |
3,100 |
|
6,080 |
4,060 |
3,390 |
3,230 |
3,070 |
|
5,760 |
4,060 |
3,380 |
3,230 |
3,060 |
|
5,760 |
4,060 |
3,380 |
3,230 |
3,050 |
|
5,700 |
4,000 |
3,370 |
3,230 |
3,040 |
|
5,400 |
4,000 |
3,370 |
3,220 |
3,020 |
|
5,330 |
3,960 |
3,350 |
3,220 |
3,020 |
|
5,320 |
3,950 |
3,350 |
3,220 |
3,000 |
|
5,250 |
3,940 |
3,340 |
3,220 |
2,990 |
|
5,180 |
3,940 |
3,340 |
3,210 |
2,950 |
|
5,180 |
3,930 |
3,340 |
3,210 |
2,930 |
|
5,110 |
3,900 |
3,340 |
3,200 |
2,930 |
|
5,060 |
3,890 |
3,340 |
3,200 |
2,920 |
|
4,990 |
3,820 |
3,330 |
3,190 |
2,870 |
|
4,880 |
3,810 |
3,320 |
3,180 |
2,840 |
|
4,810 |
3,810 |
3,320 |
3,180 |
2,700 |
|
4,810 |
3,800 |
3,300 |
3,170 |
2,680 |
|
4,770 |
3,740 |
3,280 |
3,170 |
2,670 |
|
4,570 |
3,700 |
3,280 |
3,170 |
2,660 |
|
4,420 |
3,690 |
3,270 |
3,160 |
2,620 |
|
4,410 |
3,650 |
3,270 |
3,160 |
2,380 |
|
4,390 |
3,650 |
3,260 |
3,160 |
2,320 |
|
4,370 |
3,650 |
3,260 |
3,160 |
2,300 |
|
4,350 |
3,640 |
3,260 |
3,160 |
2,280 |
|
4,340 |
3,540 |
3,250 |
3,120 |
2,080 |
|
4,220 |
3,510 |
3,250 |
3,110 |
1,740 |
|
4,210 |
3,500 |
3,250 |
3,110 |
510 |
|
4,200 |
3,500 |
3,240 |
3,100 |
|
3. Xenoliths from the Kaapvaal Craton,
Earth and Planetary Science Letters, 1995, Volume 134, Pages 341-357
|
187Re/188Os |
187Re/188Os |
187Os/188Os |
|
1,600 |
. |
1,140 |
|
2,200 |
3,500 |
1,927 |
|
3,000 |
8,500 |
2,796 |
|
2,700 |
3,800 |
1,948 |
|
2,000 |
2,200 |
1,519 |
|
2,600 |
2,800 |
2,210 |
|
1,800 |
2,300 |
1,506 |
|
2,800 |
10,200 |
2,585 |
|
2,700 |
4,100 |
2,462 |
|
1,200 |
1,200 |
618 |
|
2,200 |
2,300 |
1,876 |
|
2,800 |
4,300 |
2,585 |
|
900 |
100 |
-1,885 |
|
3,100 |
3,500 |
2,989 |
|
2,600 |
2,900 |
2,433 |
|
3,300 |
15,600 |
3,114 |
|
2,500 |
2,700 |
2,138 |
|
2,000 |
3,200 |
1,721 |
|
2,100 |
2,600 |
1,390 |
|
2,400 |
2,800 |
2,195 |
|
500 |
. |
-91 |
|
3,500 |
11,100 |
2,416 |
|
1,700 |
1,700 |
1,213 |
|
2,100 |
. |
1,357 |
4. Basalts From Apollo 15,
Earth and Planetary Science Letters, Volume 17, 1973, Pages 324-337
|
87Rb/86Sr |
87Rb/86Sr |
|
27,211 |
3,176 |
|
6,311 |
3,158 |
|
3,347 |
3,085 |
|
3,320 |
3,050 |
|
3,283 |
474 |
|
3,268 |
364 |
|
3,265 |
-1,075 |
|
3,250 |
-1,333 |
|
3,242 |
-2,875 |
|
3,238 |
-3,808 |
5. A 40Ar/39Ar Geochronological Study,
Precambrian Research, Volume 57 (1992), Pages 91-119
|
40Ar/39Ar |
40Ar/39Ar |
|
-45,000,000,000 |
5,731 |
|
-310,000 |
6,164 |
|
-56,112 |
6,164 |
|
386 |
6,204 |
|
4,684 |
6,296 |
|
4,864 |
6,479 |
|
4,890 |
6,479 |
|
4,969 |
6,544 |
|
5,105 |
6,555 |
|
5,117 |
6,560 |
|
5,117 |
6,848 |
|
5,228 |
6,848 |
|
5,228 |
6,904 |
|
5,597 |
7,810 |
6. The Origin of Gold and Sulfides,
Geochimica et Cosmochimica Acta, Volume 65, Number 13, Pages 2149–2159, 2001
|
187Os/188Os |
187Os/188Os |
|
-745,481 |
2,956 |
|
-503,252 |
2,956 |
|
-396,868 |
2,981 |
|
-116,996 |
3,017 |
|
-9,466 |
3,055 |
|
-8,975 |
3,056 |
|
-8,697 |
3,069 |
|
-8,697 |
3,102 |
|
-8,484 |
3,104 |
|
-8,320 |
3,115 |
|
-8,157 |
3,122 |
|
-8,091 |
3,130 |
|
-8,009 |
3,130 |
|
-7,600 |
3,137 |
|
2,498 |
3,199 |
|
2,731 |
3,246 |
|
2,760 |
|
7. Sm-Nd Isotopic Systematics,
Earth and Planetary Science Letters, Volume 71, 1984, Pages 46-58
|
87Rb/86Sr |
87Rb/86Sr |
|
-25,121 |
2,474 |
|
-8,208 |
2,569 |
|
-4,358 |
2,707 |
|
-1,064 |
3,007 |
|
-993 |
3,049 |
|
23 |
3,073 |
|
944 |
3,096 |
|
1,347 |
3,484 |
8. U-Th-Pb Isotope Data,
Earth and Planetary Science Letters, Volume 319-320, 2012, Pages 197-206
|
207Pb/206Pb |
206Pb/238U |
208Pb/232Th |
206Pb/235U |
|
5,403 |
31,005 |
100,601 |
63,067 |
|
5,395 |
20,343 |
84,457 |
51,813 |
|
5,390 |
19,584 |
73,968 |
50,973 |
|
5,351 |
17,306 |
67,423 |
48,585 |
|
5,339 |
17,088 |
58,353 |
48,346 |
|
5,332 |
13,410 |
57,116 |
44,333 |
|
5,328 |
13,022 |
55,311 |
43,879 |
|
5,315 |
11,479 |
51,607 |
42,056 |
|
5,298 |
11,353 |
44,439 |
41,899 |
|
5,296 |
10,652 |
39,090 |
41,043 |
|
5,289 |
9,926 |
26,361 |
40,146 |
|
5,269 |
7,138 |
24,980 |
36,327 |
9. Archaean Barberton Greenstone Belt,
Precambrian Research, Volume 92 (1998), Pages 129-144
|
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
|
4,596 |
4,560 |
4,518 |
4,499 |
|
4,596 |
4,557 |
4,518 |
4,495 |
|
4,587 |
4,557 |
4,517 |
4,495 |
|
4,587 |
4,554 |
4,517 |
4,488 |
|
4,570 |
4,554 |
4,514 |
4,477 |
|
4,570 |
4,544 |
4,514 |
4,477 |
|
4,566 |
4,544 |
4,510 |
4,476 |
|
4,566 |
4,535 |
4,510 |
4,476 |
|
4,563 |
4,535 |
4,507 |
4,458 |
|
4,563 |
4,534 |
4,507 |
4,458 |
|
4,560 |
4,534 |
4,499 |
4,454 |
10. Ar39/Ar40 Dating of Mesosiderites,
Geochemica Et Cosmochemica Acta, 1990, Volume 54, pages 2549 - 2564
|
Meteorite |
Maximum Age |
Minimum Age |
Average Age |
Age Difference |
|
1. Bondoc |
4,020 |
3,200 |
3,560 |
820 |
|
2. Budulan Plag. |
4,300 |
3,180 |
3,800 |
1,120 |
|
3. Emery |
9,080 |
3,310 |
4,110 |
5,770 |
|
4. Estherville |
13,960 |
3,180 |
4,530 |
10,780 |
|
5. Hainholz |
5,480 |
1,550 |
3,530 |
3,930 |
|
6. Lowicz |
9,930 |
2,920 |
4,210 |
7,010 |
|
7. Morristown |
7,920 |
3,600 |
4,230 |
4,320 |
|
8. Mount Padbury |
5,520 |
3,490 |
3,800 |
2,030 |
|
9. Patwar Basalt |
6,140 |
1,800 |
3,600 |
4,340 |
|
10. Patwar Gabbro |
8,430 |
2,670 |
3,910 |
5,760 |
|
11. Pinnaroo |
3,740 |
1,770 |
2,860 |
1,970 |
|
12. QUE-86900 |
10,920 |
3,240 |
4,300 |
7,680 |
|
13. Simondium |
9,170 |
3,270 |
4,100 |
5,900 |
|
14. Vaca Muerta Basalt |
4,200 |
3,330 |
3,720 |
870 |
|
15. Vaca Muerta Gabbro |
4,410 |
2,680 |
3,630 |
1,730 |
|
16. Veramin |
13,130 |
2,710 |
4,570 |
10,420 |
11. Constraints on Mantle Evolution,
Geochimica et Cosmochimica Acta, Volume 66, Number 14, Pages 2615–2630, 2002
|
187Os/188Os |
187Os/188Os |
|
3,690 |
2,722 |
|
3,580 |
2,541 |
|
3,380 |
2,272 |
|
3,348 |
2,012 |
|
3,344 |
1,776 |
|
3,318 |
1,487 |
|
3,312 |
1,457 |
|
3,272 |
1,372 |
|
3,231 |
966 |
|
3,112 |
783 |
|
3,056 |
321 |
|
2,799 |
|
12. Lead Isotope Planetary Profiling,
Chemical Geology, Volume 233 (2006) Pages 1-45
|
Pb207/Pb206 |
Pb207/Pb206 |
|
5,493 |
5,246 |
|
5,484 |
5,170 |
|
5,479 |
5,051 |
|
5,462 |
4,994 |
|
5,379 |
4,897 |
|
5,273 |
4,835 |
|
5,273 |
|
13. Continental Growth 3.2 Gyr Ago
Nature, 2012, Volume 485, pages 627–630,
http://www.nature.com/nature/journal/v485/n7400/extref/nature11140-s3.xls
|
Summary |
208Pb/232Th |
238U/206Pb |
207Pb/206Pb |
|
Average |
3,273 |
3,300 |
3,296 |
|
Maximum |
11,517 |
4,463 |
3,897 |
|
Minimum |
-24,295 |
1,560 |
2,667 |
|
Difference |
35,813 |
2,902 |
1,229 |
14. Xenoliths from the Kaapvaal Craton,
Earth And Planetary Science Letters, 1995, Volume 134, Page 344
|
187Os/188Os |
187Re/188Os |
187Re/188Os |
|
1,140 |
1,600 |
|
|
1,927 |
2,200 |
3,500 |
|
2,796 |
3,000 |
8,500 |
|
1,948 |
2,700 |
3,800 |
|
1,519 |
2,000 |
2,200 |
|
2,210 |
2,600 |
2,800 |
|
1,506 |
1,800 |
2,300 |
|
2,678 |
2,800 |
10,200 |
|
2,515 |
2,700 |
4,100 |
|
927 |
1,200 |
1,200 |
|
1,991 |
2,200 |
2,300 |
|
2,613 |
2,800 |
4,300 |
|
600 |
900 |
100 |
|
3,006 |
3,100 |
3,500 |
|
2,449 |
2,600 |
2,900 |
|
3,186 |
3,300 |
15,600 |
|
2,285 |
2,500 |
2,700 |
|
1,762 |
2,000 |
3,200 |
|
1,844 |
2,100 |
2,600 |
|
2,204 |
2,400 |
2,800 |
|
174 |
500 |
|
|
3,415 |
3,500 |
11,100 |
|
1,402 |
1,700 |
1,700 |
|
1,827 |
2,100 |
|
References
1. The Siberian Craton, Geochimica et Cosmochimica Acta, 1995, Volume 59, Number 5, Page 970
2. Argon-40-Argon-39 Age Determinations, Meteoritics & Planetary Science, 1998, Volume 33, Page 921-935
3. Xenoliths from the Kaapvaal Craton, Earth and Planetary Science Letters, 1995, Volume 134, Pages 341-357
4. Basalts From Apollo 15, Earth and Planetary Science Letters, Volume 17, 1973, Pages 324-337
5. A 40Ar/39Ar Geochronological Study, Precambrian Research, Volume 57 (1992), Pages 91-119
6. The origin of gold and sulfides, Geochimica et Cosmochimica Acta, 2001, Volume 65, Number 13,
Pages 2149–2159
7. Sm-Nd Isotopic Systematics, Earth and Planetary Science Letters, Volume 71, 1984, Pages 46-58
8. U-Th-Pb Isotope Data, Earth and Planetary Science Letters, Volume 319-320, 2012, Pages 197-206
9. Archaean Barberton Greenstone Belt, Precambrian Research, Volume 92 (1998), Pages 129-144
10. Ar-39, Ar-40 Dating of Mesosiderites, Geochemica Et Cosmochemica Acta, 1990, Volume 54, pages 2549 - 2564
11. Constraints on mantle evolution, Geochimica et Cosmochimica Acta, Volume 66, Number 14,
Pages 2615–2630, 2002
12. Lead Isotope Planetary Profiling, Chemical Geology, Volume 233 (2006) Pages 1-45
13. Continental Growth 3.2 Gyr Ago, Nature, 2012, Volume 485, pages 627–630,
http://www.nature.com/nature/journal/v485/n7400/extref/nature11140-s3.xls
14. Xenoliths from the Kaapvaal Craton, Earth And Planetary Science Letters, 1995, Volume 134, Page 344