The Geological
Timescale Versus Radiometric Dating
By
Paul Nethercott
October 2014
The Paleo Archean Period
3,600 To 4,000 Million Years Ago
1. Southern African Peridotite Xenoliths,
Geochimica et Cosmochimica Acta, 1989, Volume 53, Pages 1583-1595
|
147Sm/144Nd |
187Os/186Os |
187Os/186Os |
|
660 |
Negative |
2,740 |
|
1,080 |
|
|
|
690 |
2,790 |
2,500 |
|
1,420 |
|
|
|
700 |
Negative |
550 |
|
1,130 |
|
|
|
1,330 |
2,540 |
1,790 |
|
1,270 |
|
|
|
590 |
Negative |
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 |
Negative |
|
1,070 |
12,600 |
2,460 |
|
87Rb/86Sr |
187Os/186Os |
147Sm/144Nd |
207Pb/206Pb |
|
1,100 |
13,552 |
1,630 |
5,010 |
|
1,094 |
2,659 |
1,530 |
5,042 |
|
1,094 |
2,403 |
1,420 |
4,867 |
|
1,094 |
2,167 |
1,400 |
4,700 |
|
167 |
1,655 |
1,400 |
5,065 |
|
119 |
1,458 |
1,330 |
|
|
92 |
1,261 |
1,270 |
|
|
90 |
1,221 |
1,130 |
|
|
87 |
749 |
1,080 |
|
|
86 |
729 |
1,070 |
|
|
86 |
39 |
850 |
|
|
86 |
-217 |
700 |
|
|
86 |
-591 |
690 |
|
|
85 |
-3,309 |
660 |
|
|
85 |
|
590 |
|
|
84 |
|
570 |
|
|
83 |
|
520 |
|
2. 40Ar/39Ar History Of The Kirin Chondrite,
Earth And Planetary Science Letters, 1980, Volume 49, pages 117 - 131
|
Kirin-1 |
Kirin-1 |
Kirin-2 |
Kirin-2 |
|
4,360 |
3,830 |
4,060 |
3,640 |
|
4,330 |
3,760 |
4,040 |
3,570 |
|
4,240 |
3,690 |
4,010 |
3,150 |
|
4,220 |
3,480 |
3,990 |
2,780 |
|
4,140 |
3,020 |
3,990 |
2,490 |
|
4,050 |
2,700 |
3,980 |
1,840 |
|
4,010 |
2,460 |
3,940 |
1,110 |
|
3,990 |
2,220 |
3,870 |
960 |
|
3,990 |
2,170 |
3,840 |
580 |
|
3,930 |
2,160 |
3,700 |
480 |
|
3,880 |
|
|
|
3. The Origin of Geochemical Diversity,
Geochimica et Cosmochimica Acta, Volume 71, 2007, Pages 3656-3671
|
207Pb/206Pb |
206Pb/238U |
87Rb/86Sr |
|
5,111 |
18,213 |
7,094 |
|
5,110 |
8,087 |
6,414 |
|
5,009 |
6,586 |
4,848 |
|
4,989 |
6,284 |
4,521 |
|
4,855 |
4,684 |
3,870 |
|
4,812 |
3,979 |
3,627 |
|
4,481 |
3,776 |
3,525 |
|
4,392 |
3,773 |
3,476 |
|
4,155 |
3,706 |
|
|
4,038 |
|
|
|
4,028 |
|
|
4. Disturbance Of Isotope Systematics,
Meteoritics & Planetary Science, Volume 46, Nr 1, 35-52 (2011)
|
206Pb/238U |
Pb207/Pb206 |
|
22,146 |
5,111 |
|
17,447 |
5,110 |
|
12,695 |
4,899 |
|
9,823 |
4,875 |
|
9,163 |
4,832 |
|
8,878 |
4,729 |
|
7,834 |
4,636 |
|
6,998 |
4,602 |
|
5,775 |
4,565 |
|
5,158 |
4,548 |
|
4,852 |
4,459 |
|
4,518 |
4,422 |
|
4,334 |
4,286 |
|
4,046 |
4,244 |
|
3,475 |
4,237 |
|
2,268 |
4,236 |
|
|
4,210 |
|
|
4,183 |
5. Pb-Pb and Sm-Nd Isotope Results,
Geochimica et Cosmochimica Acta, Volume 63, No. 3/4, pp. 473-488, 1999
|
Pb207/Pb206 |
Pb207/Pb206 |
|
5,402 |
5,247 |
|
5,391 |
5,233 |
|
5,389 |
5,228 |
|
5,389 |
5,218 |
|
5,381 |
5,195 |
|
5,378 |
5,191 |
|
5,364 |
5,119 |
|
5,347 |
5,106 |
|
5,315 |
5,104 |
|
5,314 |
5,091 |
|
5,314 |
4,862 |
|
5,309 |
4,812 |
|
5,270 |
4,640 |
|
5,269 |
4,636 |
|
5,260 |
4,342 |
|
5,251 |
|
147Sm/144Nd |
Model Age |
147Sm/144Nd |
|
3,640 |
3,800 |
1,650 |
|
3,570 |
3,800 |
2,050 |
|
2,760 |
3,800 |
14,790 |
|
2,700 |
3,800 |
14,400 |
|
1,840 |
1,610 |
-1,050 |
|
2,830 |
3,800 |
16,670 |
|
5,190 |
3,800 |
-4,270 |
|
12,870 |
3,800 |
-8,520 |
|
3,340 |
3,800 |
3,260 |
|
4,710 |
3,800 |
-3,200 |
|
4,350 |
3,800 |
-3,230 |
|
100 |
3,800 |
-15,320 |
|
-15,530 |
3,800 |
-12,710 |
|
2,850 |
3,800 |
12,820 |
|
2,520 |
3,800 |
22,730 |
|
4,770 |
3,800 |
-4,660 |
|
2,740 |
3,800 |
14,480 |
|
3,450 |
3,800 |
2,750 |
6. Meteorite Dar al Gani 896,
Geochemica Et Cosmochemica Acta, 2004, Volume 68, Number 10, pages 2379 - 2397
|
40Ar/39Ar |
40Ar/39Ar |
|
3,725 |
3,335 |
|
3,688 |
3,149 |
|
3,579 |
3,110 |
|
3,502 |
2,932 |
|
3,470 |
2,713 |
|
3,454 |
1,936 |
|
3,344 |
1,749 |
7. Pb/Pb Geochronology,
Geochimica et Cosmochimica Acta, Volume 73 (2009) 469-488
|
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
|
5,860 |
4,397 |
3,705 |
|
5,758 |
3,752 |
3,703 |
|
5,717 |
3,738 |
3,702 |
|
5,704 |
3,734 |
3,701 |
|
5,685 |
3,729 |
3,700 |
|
5,673 |
3,726 |
3,690 |
|
5,672 |
3,724 |
1,019 |
|
5,666 |
3,720 |
1,017 |
|
5,664 |
3,719 |
1,011 |
|
5,639 |
3,718 |
1,008 |
|
5,633 |
3,717 |
1,006 |
|
5,555 |
3,716 |
1,003 |
|
5,552 |
3,714 |
1,000 |
|
5,510 |
3,713 |
997 |
|
5,451 |
3,712 |
994 |
|
5,236 |
3,711 |
992 |
|
5,173 |
3,710 |
989 |
|
5,097 |
3,709 |
986 |
|
5,005 |
3,707 |
983 |
8. Sm-Nd and Rb-Sr Isotopic Systematics of Ureilites,
Geochimica et Cosmochimica Acta, 1991, Volume 55, Pages 829-848
|
147Sm/144Nd |
87Rb/86Sr |
|
4,912 |
19,652 |
|
4,833 |
17,419 |
|
4,804 |
14,812 |
|
4,571 |
13,794 |
|
4,566 |
11,015 |
|
4,555 |
10,139 |
|
4,555 |
8,490 |
|
4,480 |
7,714 |
|
4,409 |
6,819 |
|
4,366 |
5,377 |
|
4,303 |
4,917 |
|
4,234 |
4,475 |
|
4,192 |
4,387 |
|
4,128 |
3,874 |
|
4,086 |
3,614 |
|
4,055 |
3,416 |
|
3,876 |
2,629 |
|
3,858 |
2,458 |
|
3,663 |
2,423 |
|
3,608 |
|
|
3,498 |
|
|
3,428 |
|
|
2,929 |
|
9. Northwest Africa 482,
Meteoritics & Planetary Science, 2002, Volume 37, Pages 1797-1813
|
36Ar/40Ar Age |
36Ar/40Ar Age |
36Ar/40Ar Age |
|
Bulk Sample |
Bulk Sample |
Glass Sample |
|
9,670 |
3,333 |
9,905 |
|
8,560 |
3,313 |
7,388 |
|
8,127 |
3,173 |
5,708 |
|
6,256 |
3,103 |
4,006 |
|
3,774 |
3,016 |
3,794 |
|
3,736 |
2,771 |
3,713 |
|
3,722 |
2,312 |
2,804 |
|
3,638 |
2,143 |
2,407 |
|
3,531 |
1,816 |
2,358 |
10. An Extremely Low U/Pb Source,
Geochimica et Cosmochimica Acta, 1993, Volume 57, Pages 4687-4702
|
207Pb/206Pb |
206Pb/238U |
208Pb/232Th |
207Pb/235U |
87Rb/86Sr |
|
5,018 |
56,923 |
65,286 |
8,128 |
5,385 |
|
4,989 |
27,313 |
33,898 |
6,655 |
5,206 |
|
4,978 |
17,873 |
25,013 |
5,988 |
5,179 |
|
4,977 |
13,680 |
22,178 |
5,892 |
4,760 |
|
4,951 |
13,623 |
21,204 |
5,427 |
4,393 |
|
4,923 |
10,895 |
17,611 |
5,300 |
4,251 |
|
4,909 |
10,278 |
14,430 |
5,173 |
4,124 |
|
4,908 |
9,653 |
14,410 |
4,848 |
3,980 |
|
4,908 |
8,009 |
13,107 |
4,844 |
3,859 |
|
4,908 |
7,395 |
12,738 |
|
3,849 |
|
4,885 |
6,764 |
11,641 |
|
3,839 |
|
4,878 |
6,670 |
11,174 |
|
3,836 |
|
4,870 |
6,449 |
9,094 |
|
3,812 |
|
4,870 |
6,436 |
6,520 |
|
3,802 |
|
4,870 |
6,070 |
6,166 |
|
3,382 |
|
4,843 |
5,777 |
6,121 |
|
3,312 |
|
4,830 |
5,625 |
5,671 |
|
3,276 |
|
4,781 |
5,602 |
5,408 |
|
3,240 |
|
4,744 |
5,278 |
5,401 |
|
3,096 |
|
4,735 |
5,147 |
5,396 |
|
3,005 |
|
4,700 |
4,952 |
5,365 |
|
2,706 |
|
4,700 |
4,923 |
5,098 |
|
2,561 |
|
4,671 |
4,829 |
5,035 |
|
1,269 |
|
4,671 |
4,627 |
|
|
721 |
|
4,661 |
|
|
|
|
|
4,654 |
|
|
|
|
|
4,608 |
|
|
|
|
|
4,608 |
|
|
|
|
11. Lu-Hf and U-Pb Isotopic Studies,
Geochimica Et Cosmochimica Acta, Volume 64, Number 24, Pages 4205-4225, 2000
|
176Lu/177Hf |
176Lu/177Hf |
176Lu/177Hf |
176Lu/177Hf |
176Lu/177Hf |
176Lu/177Hf |
|
4,620 |
2,160 |
1,350 |
970 |
680 |
-1,270 |
|
4,520 |
2,070 |
1,300 |
950 |
670 |
-1,730 |
|
4,410 |
2,050 |
1,290 |
940 |
660 |
-1,830 |
|
4,350 |
2,030 |
1,270 |
920 |
650 |
-1,900 |
|
4,140 |
2,020 |
1,230 |
910 |
630 |
-1,970 |
|
4,070 |
2,010 |
1,220 |
900 |
590 |
-1,980 |
|
4,000 |
1,840 |
1,200 |
880 |
420 |
-2,130 |
|
3,610 |
1,830 |
1,190 |
840 |
370 |
-2,250 |
|
3,530 |
1,770 |
1,150 |
820 |
200 |
-2,280 |
|
3,010 |
1,680 |
1,140 |
810 |
130 |
-2,300 |
|
2,950 |
1,660 |
1,120 |
790 |
-80 |
-2,750 |
|
2,660 |
1,640 |
1,110 |
780 |
-100 |
-3,090 |
|
2,600 |
1,630 |
1,100 |
760 |
-300 |
-3,300 |
|
2,540 |
1,620 |
1,070 |
750 |
-410 |
-3,370 |
|
2,530 |
1,610 |
1,060 |
730 |
-540 |
-3,660 |
|
2,460 |
1,470 |
1,030 |
720 |
-570 |
-4,070 |
|
2,370 |
1,450 |
1,010 |
710 |
-810 |
-4,600 |
|
2,260 |
1,430 |
990 |
700 |
-1,060 |
-4,670 |
|
2,230 |
1,390 |
980 |
690 |
-1,160 |
-5,010 |
12. Diamond Formation Episodes,
Contributions Mineral Petrology, 2009, Volume 157, Pages 525-540
|
187Os/188Os |
187Re/188Os |
|
-165,769 |
1,600 |
|
-53,329 |
2,600 |
|
-598,671 |
1,900 |
|
-6,193 |
3,800 |
|
-116,505 |
3,100 |
|
-8,648 |
-51,000 |
|
-8,648 |
1,000 |
|
-1,247,778 |
1,800 |
|
-932,390 |
1,100 |
|
-160,859 |
2,500 |
|
-470,355 |
6,000 |
|
-76,079 |
10,300 |
|
-101,447 |
3,500 |
|
-112,740 |
1,200 |
13. Rocks From Southern West Greenland,
Geochimica et Cosmochimica Acta, 2002, Volume 66, Number 14, Pages 2615–2630
|
187Os/188Os |
Model Age |
187Os/188Os |
Model Age |
|
3,690 |
3,810 |
3,272 |
3,460 |
|
3,580 |
3,810 |
3,112 |
3,460 |
|
3,380 |
3,810 |
3,056 |
3,460 |
|
3,348 |
3,810 |
2,799 |
3,460 |
|
3,344 |
3,810 |
2,722 |
3,460 |
|
3,318 |
3,810 |
2,541 |
3,460 |
|
3,312 |
3,810 |
2,272 |
3,460 |
|
3,231 |
3,810 |
1,457 |
3,460 |
|
2,012 |
3,810 |
1,372 |
3,460 |
|
1,776 |
3,810 |
966 |
3,460 |
|
1,487 |
3,810 |
|
|
|
783 |
3,810 |
|
|
|
321 |
3,810 |
|
|
14. Ion Microprobe Pb-Pb Dating,
Precambrian Research, Volume 113 (2002) Pages 155-168
|
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
|
5,123 |
5,015 |
4,984 |
4,936 |
4,878 |
|
5,097 |
5,013 |
4,976 |
4,934 |
4,828 |
|
5,036 |
5,005 |
4,959 |
4,927 |
4,828 |
|
5,034 |
5,005 |
4,959 |
4,927 |
4,761 |
|
5,025 |
5,001 |
4,959 |
4,924 |
4,755 |
|
5,021 |
5,000 |
4,955 |
4,920 |
4,622 |
|
5,020 |
4,996 |
4,948 |
4,920 |
4,586 |
|
5,018 |
4,996 |
4,943 |
4,918 |
4,581 |
|
5,016 |
4,994 |
4,941 |
4,907 |
4,546 |
|
5,016 |
4,993 |
4,939 |
4,904 |
4,365 |
15. Dating Of Zircon-Free Protoliths,
Precambrian Research, Volume 117 (2002) Pages 185-24
|
238U/206Pb |
238U/206Pb |
238U/206Pb |
238U/206Pb |
238U/206Pb |
|
4,015 |
3,735 |
3,633 |
3,533 |
3,286 |
|
3,990 |
3,722 |
3,631 |
3,531 |
3,279 |
|
3,987 |
3,719 |
3,619 |
3,529 |
3,279 |
|
3,964 |
3,715 |
3,617 |
3,521 |
3,262 |
|
3,954 |
3,711 |
3,610 |
3,521 |
3,252 |
|
3,932 |
3,711 |
3,608 |
3,521 |
3,237 |
|
3,905 |
3,711 |
3,606 |
3,519 |
3,145 |
|
3,905 |
3,711 |
3,604 |
3,511 |
3,122 |
|
3,895 |
3,702 |
3,600 |
3,494 |
3,105 |
|
3,886 |
3,702 |
3,598 |
3,492 |
3,104 |
|
3,871 |
3,697 |
3,598 |
3,484 |
3,072 |
|
3,864 |
3,695 |
3,598 |
3,482 |
3,031 |
|
3,852 |
3,691 |
3,598 |
3,475 |
2,957 |
|
3,850 |
3,680 |
3,592 |
3,439 |
2,887 |
|
3,840 |
3,674 |
3,592 |
3,433 |
2,808 |
|
3,840 |
3,672 |
3,590 |
3,431 |
2,786 |
|
3,836 |
3,672 |
3,577 |
3,429 |
2,769 |
|
3,831 |
3,672 |
3,573 |
3,427 |
2,758 |
|
3,824 |
3,669 |
3,565 |
3,425 |
2,758 |
|
3,824 |
3,669 |
3,563 |
3,425 |
2,744 |
|
3,821 |
3,665 |
3,561 |
3,416 |
2,738 |
|
3,819 |
3,665 |
3,559 |
3,409 |
2,720 |
|
3,803 |
3,665 |
3,559 |
3,398 |
2,717 |
|
3,780 |
3,663 |
3,557 |
3,396 |
2,690 |
|
3,780 |
3,661 |
3,555 |
3,390 |
2,656 |
|
3,778 |
3,654 |
3,555 |
3,383 |
2,656 |
|
3,778 |
3,652 |
3,553 |
3,367 |
2,648 |
|
3,773 |
3,642 |
3,545 |
3,365 |
2,576 |
|
3,766 |
3,640 |
3,539 |
3,344 |
2,548 |
|
3,753 |
3,635 |
3,537 |
3,300 |
1,872 |
|
3,742 |
3,633 |
3,533 |
3,288 |
|
16. Early Archaean Rocks At Fyfe Hills,
Precambrian Research, Volume 21, 1983, Pages 197-222
|
207Pb/206Pb |
206Pb/238U |
207Pb/235U |
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
|
2,670 |
2,581 |
2,631 |
4,925 |
3,126 |
2,715 |
|
2,597 |
2,535 |
2,570 |
4,893 |
3,117 |
2,713 |
|
2,626 |
2,545 |
2,590 |
4,686 |
3,097 |
2,697 |
|
2,591 |
2,488 |
2,545 |
4,588 |
3,096 |
1,835 |
|
2,554 |
2,456 |
2,510 |
4,112 |
3,081 |
1,422 |
|
2,872 |
2,645 |
2,776 |
3,441 |
3,079 |
1,163 |
|
2,540 |
2,439 |
2,495 |
3,353 |
3,075 |
-13,784 |
|
2,551 |
2,439 |
2,500 |
3,149 |
3,073 |
-23,965 |
|
2,506 |
2,408 |
2,462 |
3,139 |
3,039 |
-43,117 |
|
2,612 |
2,504 |
2,564 |
3,135 |
2,811 |
-108,362 |
17. The Martian Meteorite Alh84001,
Geochimica et Cosmochimica Acta, 1997, Volume 61, Number 18, Pages 3835-3850
|
Ar39/Ar40 |
Ar39/Ar40 |
Ar39/Ar40 |
Ar39/Ar40 |
|
9,153 |
4,278 |
3,906 |
3,440 |
|
6,559 |
4,228 |
3,886 |
3,424 |
|
6,137 |
4,207 |
3,880 |
3,395 |
|
5,262 |
4,189 |
3,861 |
3,294 |
|
5,041 |
4,130 |
3,835 |
3,267 |
|
4,931 |
4,126 |
3,835 |
3,215 |
|
4,909 |
4,125 |
3,830 |
3,087 |
|
4,799 |
4,118 |
3,808 |
2,985 |
|
4,679 |
4,089 |
3,794 |
2,936 |
|
4,562 |
4,055 |
3,790 |
2,815 |
|
4,561 |
4,021 |
3,770 |
2,279 |
|
4,528 |
4,010 |
3,767 |
2,103 |
|
4,513 |
3,977 |
3,676 |
2,083 |
|
4,489 |
3,970 |
3,633 |
1,965 |
|
4,460 |
3,968 |
3,621 |
1,898 |
|
4,405 |
3,962 |
3,607 |
1,723 |
|
4,383 |
3,956 |
3,584 |
1,494 |
|
4,356 |
3,911 |
3,523 |
1,476 |
|
4,281 |
3,910 |
3,497 |
726 |
References
1. Southern African Peridotite Xenoliths, Geochimica et Cosmochimica Acta, 1989, Volume 53, Pages 1583-1595
2. History Of The Kirin Chondrite, Earth And Planetary Science Letters, 1980, Volume 49, pages 117 - 131
3. The origin of geochemical diversity, Geochimica et Cosmochimica Acta, Volume 71, 2007, Pages 3656-3671
4. Disturbance Of Isotope Systematics, Meteoritics & Planetary Science, 2011, Volume 46, Nr 1, Pages 35-52
5. Pb-Pb and Sm-Nd Isotope Results, Geochimica et Cosmochimica Acta, Volume 63, No. 3/4, pp. 473-488, 1999
6. Meteorite Dar al Gani 896, Geochemica Et Cosmochemica Acta, 2004, Volume 68, Number 10, pages 2379 - 2397
7. Pb/Pb Geochronology, Geochimica et Cosmochimica Acta, Volume 73 (2009), Pages 469-488
8. Sm-Nd and Rb-Sr isotopic systematics of ureilites, Geochimica et Cosmochimica Acta, 1991, Volume 55,
Pages 829-848
9. Northwest Africa 482, Meteoritics & Planetary Science, 2002, Volume 37, Pages 1797-1813
10. An extremely low U/Pb source, Geochimica et Cosmochimica Acta, 1993, Volume 57, Pages 4687-4702
11. Lu-Hf and U-Pb Isotopic Studies, Geochimica Et Cosmochimica Acta, 2000, Volume 64, Number 24,
Pages 4205-4225
12. Diamond Formation Episodes, Contributions Mineral Petrology, 2009, Volume 157, Pages 525-540
13. Rocks from Southern West Greenland, Geochimica et Cosmochimica Acta, 2002, Volume 66, Number 14,
Pages 2615–2630
14. Ion Microprobe Pb-Pb Dating, Precambrian Research, Volume 113 (2002), Pages 155-168
15. Dating Of Zircon-Free Protoliths, Precambrian Research, Volume 117 (2002), Pages 185-24
16. Early Archaean Rocks At Fyfe Hills, Precambrian Research, Volume 21, 1983, Pages 197-222
17. The Martian Meteorite Alh84001, Geochimica et Cosmochimica Acta, 1997, Volume 61, Number 18,
Pages 3835-3850