The Geological
Timescale Versus Radiometric Dating
By
Paul Nethercott
November 2014
The Ectasian Period
1,400 To 1,600 Million Years Ago
1. Archean Man Shield, West Africa,
Precambrian Research, Volume 118, 2002, Pages 267-283
|
187Os/188Os |
187Re/188Os |
|
-1,425,342 |
77,160 |
|
-1,410,448 |
15,510 |
|
-1,143,014 |
8,520 |
|
-1,020,918 |
7,580 |
|
-878,690 |
6,220 |
|
-657,248 |
5,800 |
|
-606,347 |
5,640 |
|
-602,910 |
5,160 |
|
-588,016 |
5,070 |
|
-577,869 |
4,610 |
|
-415,346 |
3,950 |
|
-324,347 |
3,840 |
|
-293,414 |
3,690 |
|
-216,653 |
3,640 |
|
-132,528 |
3,370 |
|
-105,195 |
3,310 |
|
-96,357 |
3,110 |
|
-89,974 |
3,070 |
|
-73,280 |
2,790 |
|
-33,018 |
2,310 |
|
-15,833 |
2,280 |
|
-15,669 |
1,390 |
2. Base and Precious Metal Veins,
Economic Geology, Volume 97, 2002, Pages 23-42
|
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
|
508,074 |
157,304 |
125,399 |
86,483 |
|
314,336 |
151,142 |
114,796 |
75,684 |
|
302,580 |
150,089 |
114,795 |
72,915 |
|
287,077 |
149,802 |
113,950 |
71,225 |
|
207,257 |
144,826 |
111,884 |
69,729 |
|
201,185 |
142,977 |
110,719 |
63,934 |
|
191,104 |
138,115 |
109,164 |
63,406 |
|
190,573 |
134,866 |
108,617 |
61,740 |
|
189,167 |
134,061 |
108,278 |
56,735 |
|
186,066 |
134,039 |
102,140 |
52,117 |
|
183,607 |
132,885 |
99,952 |
47,926 |
|
183,225 |
132,746 |
93,848 |
46,968 |
|
163,764 |
131,670 |
89,246 |
39,944 |
|
158,436 |
130,664 |
88,626 |
37,623 |
|
158,282 |
129,495 |
87,708 |
16,153 |
3. Excess Argon,
Earth and Planetary Science Letters, 1992, Volume 110, Pages 193 - 211
|
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
|
3,557 |
1,362 |
1,126 |
661 |
|
2,815 |
1,313 |
1,117 |
655 |
|
2,369 |
1,285 |
1,112 |
651 |
|
2,154 |
1,276 |
1,103 |
616 |
|
2,070 |
1,192 |
1,090 |
568 |
|
1,995 |
1,178 |
1,086 |
553 |
|
1,907 |
1,148 |
1,070 |
527 |
|
1,887 |
1,147 |
1,065 |
441 |
|
1,821 |
1,146 |
1,046 |
436 |
|
1,713 |
1,140 |
970 |
430 |
|
1,698 |
1,139 |
952 |
426 |
|
1,655 |
1,138 |
949 |
389 |
|
1,510 |
1,137 |
886 |
367 |
|
1,500 |
1,133 |
813 |
362 |
|
1,456 |
1,132 |
793 |
360 |
|
1,432 |
1,131 |
721 |
346 |
|
1,410 |
1,130 |
706 |
237 |
4. The Taklimakan Desert sands,
Geochimica et Cosmochimica Acta, Volume 67, Number 6, Pages 1195–1205, 2003
|
187Os/188Os |
187Os/188Os |
|
-405,052 |
-141,055 |
|
-272,644 |
-141,055 |
|
-212,251 |
-134,017 |
|
-204,722 |
-133,363 |
|
-197,193 |
-131,235 |
|
-195,720 |
-130,089 |
|
-194,411 |
-70,841 |
|
-192,938 |
-51,365 |
|
-192,283 |
-50,710 |
|
-190,810 |
-16,111 |
|
-190,810 |
-14,703 |
|
-179,517 |
-14,081 |
|
-169,861 |
-13,803 |
|
-169,206 |
-13,754 |
|
-164,623 |
-13,410 |
|
-149,566 |
-12,805 |
|
-145,638 |
-12,281 |
5. Evolution of the South China block,
Geochimica et Cosmochimica Acta, Volume 73 (2009) 4531–4557
|
187Os/188Os |
187Os/188Os |
187Os/188Os |
187Os/188Os |
187Os/188Os |
|
-53,129 |
43 |
649 |
1,582 |
20,412 |
|
-46,812 |
43 |
682 |
1,614 |
20,435 |
|
-9,579 |
76 |
812 |
1,696 |
20,436 |
|
-9,572 |
109 |
829 |
1,696 |
20,448 |
|
-9,569 |
207 |
927 |
1,745 |
20,456 |
|
-9,562 |
289 |
943 |
1,844 |
20,462 |
|
-9,546 |
321 |
1,009 |
1,860 |
20,464 |
|
-3,754 |
371 |
1,058 |
2,024 |
20,471 |
|
-1,250 |
387 |
1,058 |
2,105 |
20,476 |
|
-1,233 |
452 |
1,074 |
2,155 |
|
|
-579 |
469 |
1,107 |
2,629 |
|
|
-530 |
485 |
1,140 |
2,940 |
|
|
-448 |
485 |
1,140 |
3,056 |
|
|
-431 |
551 |
1,271 |
3,071 |
|
|
-399 |
551 |
1,385 |
3,081 |
|
|
-300 |
583 |
1,385 |
3,120 |
|
|
-104 |
583 |
1,451 |
20,363 |
|
|
-88 |
595 |
1,483 |
20,376 |
|
|
-71 |
600 |
1,500 |
20,389 |
|
|
10 |
616 |
1,549 |
20,397 |
|
6. Diamonds From Ellendale,
Geochimica et Cosmochimica Acta, Volume 74 (2010) 3292-3306
|
Sample Name |
187Re/188Os |
187Os/188Os |
|
EL10 |
1,658 |
-750,391 |
|
EL26 |
430 |
-691,471 |
|
EL57 |
7,457 |
-389,667 |
|
EL61 |
847 |
-390,321 |
|
EL23 |
1,264 |
-13,558 |
|
EL50 |
1,171 |
-11,430 |
|
EL54_1 |
-8,281 |
1,074 |
|
EL54_3 |
-362 |
-137 |
|
EL55_1 |
7,973 |
2,335 |
|
EL55_2 |
-104 |
-300 |
|
EL65 |
-5,773 |
2,155 |
7. The Beni Bousera Peridotite Massif,
Journal Of Petrology, 2004, Volume 45, Number 2, Pages 439–455
|
187Os/188Os |
187Os/188Os |
|
-12,876.56 |
-12,876,555 |
|
-1,681.66 |
-1,681,662 |
|
-1,198.84 |
-1,198,841 |
|
-951.70 |
-951,703 |
|
-933.70 |
-933,699 |
|
-277.39 |
-277,390 |
|
-234.84 |
-234,837 |
|
-79.84 |
-79,843 |
|
-9.30 |
-9,302 |
8. Sr, Nd, and Pb Isotopes in Proterozoic Intrusives,
Geochimica et Cosmochimica Acta, 1986, Volume 50, Pages 2571-2585
|
87Rb/86Sr |
207Pb/206Pb |
|
1,459 |
5,147 |
|
1,462 |
5,180 |
|
1,416 |
5,092 |
|
1,487 |
5,139 |
|
1,442 |
5,184 |
|
1,430 |
5,184 |
|
1,419 |
5,184 |
|
1,503 |
5,211 |
|
1,448 |
5,211 |
|
1,449 |
5,175 |
|
1,449 |
5,138 |
|
1,452 |
5,187 |
|
1,449 |
5,218 |
|
1,462 |
5,192 |
|
1,464 |
5,137 |
|
1,402 |
5,065 |
|
1,397 |
5,100 |
|
1,398 |
5,135 |
|
1,401 |
5,100 |
|
1,401 |
5,156 |
|
1,395 |
5,028 |
|
|
4,931 |
|
|
5,011 |
9. Isotope Evidence for Recycled Oceanic Crust,
Journal Of Petrology, (2006) Volume 47, Number 9, Pages 1705-1749.
|
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
|
5,001 |
4,985 |
4,957 |
|
4,991 |
4,984 |
4,954 |
|
4,991 |
4,982 |
4,954 |
|
4,991 |
4,981 |
4,953 |
|
4,991 |
4,979 |
4,953 |
|
4,991 |
4,978 |
4,953 |
|
4,990 |
4,973 |
4,953 |
|
4,990 |
4,973 |
4,952 |
|
4,990 |
4,970 |
4,952 |
|
4,990 |
4,969 |
4,952 |
|
4,989 |
4,969 |
4,951 |
|
4,989 |
4,969 |
4,950 |
|
4,989 |
4,969 |
4,950 |
|
4,989 |
4,967 |
4,950 |
|
4,989 |
4,966 |
4,948 |
|
4,989 |
4,965 |
4,944 |
|
4,988 |
4,964 |
4,942 |
|
4,988 |
4,961 |
4,938 |
|
4,987 |
4,959 |
4,936 |
|
4,986 |
4,959 |
4,936 |
|
4,985 |
4,959 |
4,936 |
|
4,985 |
4,958 |
4,936 |
10. Bayan Obo Deposit,
Chinese Journal Of Geochemistry, Volume 16, Number 1, 1997, Pages 80-85
|
Pb207/Pb206 |
Model Age |
|
5,237 |
689 |
|
5,237 |
1,479 |
|
5,237 |
301 |
|
5,237 |
509 |
|
5,065 |
755 |
|
5,065 |
1,781 |
|
5,065 |
421 |
|
5,065 |
458 |
11. Metamorphic Rocks From Broken Hill,
Earth and Planetary Science Letters, 1981, Volume 55, Pages 123 - 149
|
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
|
9,588 |
7,000 |
5,500 |
4,989 |
|
9,588 |
6,960 |
5,500 |
4,973 |
|
8,432 |
6,960 |
5,459 |
4,973 |
|
8,432 |
6,931 |
5,409 |
4,970 |
|
7,823 |
6,799 |
5,409 |
4,929 |
|
7,823 |
6,799 |
5,373 |
4,861 |
|
7,666 |
6,795 |
5,300 |
4,861 |
|
7,666 |
6,795 |
5,244 |
4,802 |
|
7,587 |
6,730 |
5,191 |
4,777 |
|
7,587 |
6,730 |
5,171 |
4,767 |
|
7,317 |
6,611 |
5,170 |
4,704 |
|
7,317 |
6,511 |
5,106 |
4,639 |
|
7,300 |
6,511 |
5,075 |
4,637 |
|
7,257 |
6,167 |
5,075 |
4,552 |
|
7,257 |
6,037 |
5,068 |
4,200 |
|
7,234 |
5,800 |
5,055 |
4,000 |
|
7,234 |
5,748 |
5,055 |
3,700 |
|
7,015 |
5,721 |
5,050 |
3,500 |
|
7,010 |
5,598 |
5,050 |
3,500 |
12. Evidence from Icelandic Picrites,
Geochimica et Cosmochimica Acta, Volume 71 (2007) Pages 4570–4591
|
187Os/186Os |
187Os/186Os |
|
-2,219 |
-1,262 |
|
-2,171 |
-1,225 |
|
-2,144 |
-1,207 |
|
-2,115 |
-1,184 |
|
-2,060 |
-1,131 |
|
-2,059 |
-1,073 |
|
-1,846 |
-1,061 |
|
-1,750 |
-1,029 |
|
-1,650 |
-1,015 |
|
-1,607 |
-834 |
|
-1,550 |
-785 |
|
-1,549 |
1,782 |
|
-1,433 |
1,782 |
|
-1,400 |
1,783 |
|
-1,327 |
1,783 |
|
-1,314 |
1,783 |
|
-1,278 |
1,783 |
13. Genesis of Continental Intraplate Basalts,
Journal Of Petrology, 2001, Volume 42 Number 6 Pages 1197–1218
|
Pb 207/206 |
187Os/188Os |
% Difference |
Difference |
|
4,979 |
-1,900 |
173 |
4,500 |
|
4,985 |
-1,484 |
157 |
4,084 |
|
4,986 |
-20,890 |
903 |
23,490 |
|
4,981 |
-23,099 |
988 |
25,699 |
|
4,984 |
-52,445 |
2,117 |
55,045 |
|
4,974 |
-39,136 |
1,605 |
41,736 |
|
4,975 |
-19,630 |
855 |
22,230 |
|
4,986 |
-9,132 |
451 |
11,732 |
|
5,007 |
-12,919 |
597 |
15,519 |
14. Ion Microprobe U-Th-Pb Dating,
Meteoritics & Planetary Science, 2004, Volume 39, Number 12, Pages 2033 - 2041
|
U238/Pb206 |
Th232/Pb208 |
Pb207/Pb206 |
|
11,214 |
23,837 |
5,348 |
|
8,087 |
17,095 |
5,103 |
|
7,820 |
16,633 |
5,093 |
|
7,810 |
15,784 |
5,019 |
|
6,568 |
14,905 |
5,000 |
|
6,330 |
14,091 |
4,922 |
|
5,552 |
12,754 |
4,905 |
|
4,901 |
11,781 |
4,893 |
|
4,699 |
11,359 |
4,835 |
|
4,681 |
10,694 |
4,776 |
|
4,427 |
10,423 |
4,756 |
|
4,062 |
8,734 |
4,750 |
|
4,041 |
7,573 |
4,710 |
|
4,005 |
7,013 |
4,654 |
|
3,959 |
6,444 |
4,637 |
|
3,549 |
5,612 |
4,625 |
|
2,813 |
5,493 |
4,581 |
|
2,050 |
3,184 |
4,087 |
|
1,842 |
2,963 |
3,897 |
15. Upper Crust in North-East Australia,
International Journal Earth Science, 2012, Volume 101, Pages 1091-1109
|
176Lu/177Hf |
176Lu/177Hf |
|
6,271 |
1,145 |
|
5,894 |
1,140 |
|
4,325 |
1,117 |
|
3,239 |
1,085 |
|
2,835 |
1,071 |
|
2,486 |
1,068 |
|
2,384 |
1,017 |
|
1,905 |
965 |
|
1,722 |
933 |
|
1,590 |
854 |
|
1,574 |
806 |
|
1,568 |
509 |
|
1,544 |
408 |
|
1,540 |
402 |
|
1,536 |
350 |
|
1,526 |
-112 |
|
1,492 |
-1,686 |
|
1,385 |
-1,784 |
|
1,355 |
-1,946 |
|
1,302 |
-2,301 |
|
1,284 |
-2,630 |
|
1,241 |
|
|
Sample |
147Sm/144Nd |
176Lu/177Hf |
Difference |
|
85N6/2 |
-800 |
3,480 |
4,280 |
|
94CH2/7 |
2,290 |
3,130 |
840 |
|
|
2,260 |
3,130 |
870 |
|
|
2,290 |
|
|
|
94CH6/23 |
2,260 |
1,730 |
530 |
|
94CH6/30 |
2,280 |
3,870 |
1,590 |
|
|
2,280 |
|
|
|
85N5/1 |
120 |
890 |
770 |
|
85N5/4 |
1,370 |
920 |
450 |
|
|
1,370 |
|
|
|
94MB7/4 |
3,080 |
2,270 |
810 |
|
|
|
2,350 |
|
|
94MB7/7 |
-500 |
-460 |
40 |
|
|
|
360 |
|
|
94MB4/4 |
1,740 |
-380 |
2,120 |
|
94MB4/33 |
2,480 |
3,970 |
1,490 |
|
94MB4/38 |
-50 |
420 |
470 |
|
94A4/13 |
9,730 |
-3,220 |
12,950 |
16. 40Ar/39Ar Dating Proterozoic Eastern Mount Isa Block,
Precambrian Research, Volume 163 (2008) 131-150
|
Location |
Minimum |
Maximum |
|
Snake Creek |
5,870 |
24,930 |
|
|
2,920 |
11,740 |
|
|
1,090 |
4,960 |
|
|
1,600 |
4,570 |
|
|
350 |
460 |
|
|
550 |
2,010 |
|
Roxmere |
290 |
2,370 |
|
|
530 |
850 |
|
Cloncurry Fault |
810 |
2,220 |
|
|
880 |
2,900 |
|
Mary Kathleen - Tribulation |
540 |
650 |
|
|
290 |
800 |
|
|
280 |
630 |
|
|
330 |
2,720 |
|
|
360 |
740 |
|
|
540 |
1,200 |
|
Mary Kathleen - Sunrise |
1,260 |
2,990 |
|
|
2,730 |
4,220 |
|
Mary Kathleen - Knobby |
1,480 |
3,920 |
|
|
1,630 |
7,330 |
|
|
1,720 |
6,260 |
|
|
3,720 |
6,150 |
|
Mary Kathleen - Lime Creek |
840 |
1,080 |
|
|
490 |
940 |
|
|
520 |
1,800 |
|
|
580 |
1,240 |
17. Isotopic Compositions of Mantle Xenoliths,
Geochimica et Cosmochimica Acta, Volume 65, Number 8, Pages 1311–1323, 2001
|
187Os/188Os |
Model Age |
187Os/188Os |
Model Age |
|
-633 |
1550 |
431 |
1750 |
|
-45 |
1550 |
374 |
1750 |
|
-76 |
1550 |
-572 |
1750 |
|
-124 |
1550 |
-1,127 |
1750 |
|
-114 |
1550 |
367 |
1750 |
|
-363 |
1550 |
2,534 |
2800 |
|
-286 |
1550 |
1,834 |
2800 |
|
377 |
1550 |
2,560 |
2800 |
|
-260 |
1550 |
2,263 |
2800 |
|
87 |
1550 |
1,418 |
2800 |
|
-418 |
1550 |
-1,386 |
1620 |
|
-754 |
1550 |
1,104 |
1620 |
|
-739 |
1550 |
-417 |
1620 |
|
30 |
1550 |
1,168 |
1620 |
|
-318 |
1550 |
449 |
1620 |
|
99 |
1550 |
-739 |
1620 |
|
1,336 |
1550 |
107 |
1620 |
|
312 |
1550 |
-513 |
1580 |
|
770 |
1550 |
-332 |
1580 |
|
-179 |
1550 |
-189 |
1580 |
|
-453 |
1550 |
1,130 |
1580 |
|
-225 |
1550 |
|
|
18. Accurate 186Os/188Os and 187Os/188Os measurements,
Chemical Geology, 2008, Volume 248, Pages 394–426
|
187Os/186Os |
187Os/186Os |
|
-12 |
111 |
|
-11 |
112 |
|
-10 |
112 |
|
-10 |
112 |
|
-10 |
112 |
|
-10 |
112 |
|
-10 |
112 |
|
-9 |
112 |
|
-9 |
113 |
|
-9 |
113 |
|
-9 |
114 |
|
-9 |
321 |
|
-9 |
323 |
|
-8 |
323 |
|
-8 |
323 |
|
-7 |
324 |
|
106 |
324 |
|
106 |
1,054 |
|
107 |
1,056 |
|
107 |
1,056 |
|
107 |
1,057 |
|
109 |
1,057 |
|
110 |
1,058 |
19. Lead And Strontium Isotopes In Cretaceous Kimberlites,
Earth and Planetary Science Letters, Volume 34 (1977) 419-431
|
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
|
5,112 |
5,039 |
4,916 |
|
5,110 |
5,036 |
4,904 |
|
5,110 |
5,029 |
4,904 |
|
5,110 |
5,012 |
4,901 |
|
5,110 |
5,003 |
4,898 |
|
5,110 |
4,971 |
4,897 |
|
5,110 |
4,966 |
4,886 |
|
5,110 |
4,956 |
4,884 |
|
5,110 |
4,950 |
4,883 |
|
5,109 |
4,945 |
4,872 |
|
5,061 |
4,936 |
4,868 |
|
5,050 |
4,932 |
4,856 |
|
5,045 |
4,925 |
4,710 |
20. 40Ar/39Ar Quartz Ages,
Geochimica et Cosmochimica Acta, 2006, Volume 70, Page 2573-2575
|
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
|
9,969 |
4,760 |
3,109 |
1,892 |
|
8,655 |
4,759 |
2,955 |
1,866 |
|
7,715 |
4,714 |
2,952 |
1,853 |
|
7,412 |
4,594 |
2,863 |
1,818 |
|
6,568 |
4,515 |
2,840 |
1,793 |
|
6,442 |
4,508 |
2,808 |
1,793 |
|
6,393 |
4,506 |
2,775 |
1,768 |
|
6,127 |
4,499 |
2,674 |
1,764 |
|
6,060 |
4,425 |
2,639 |
1,724 |
|
5,871 |
4,343 |
2,628 |
1,644 |
|
5,620 |
4,252 |
2,610 |
1,630 |
|
5,601 |
4,144 |
2,581 |
1,595 |
|
5,511 |
4,128 |
2,530 |
1,511 |
|
5,418 |
4,120 |
2,475 |
1,496 |
|
5,370 |
4,063 |
2,360 |
1,482 |
|
5,238 |
3,799 |
2,261 |
1,406 |
|
5,201 |
3,713 |
2,230 |
1,402 |
|
5,176 |
3,692 |
2,197 |
1,394 |
|
5,049 |
3,523 |
2,180 |
1,304 |
|
4,983 |
3,442 |
2,176 |
1,252 |
|
4,931 |
3,422 |
2,128 |
1,246 |
|
4,883 |
3,329 |
2,076 |
1,188 |
|
4,844 |
3,227 |
2,018 |
1,174 |
|
4,805 |
3,198 |
2,016 |
1,152 |
|
4,804 |
3,188 |
1,926 |
1,127 |
|
4,777 |
3,136 |
1,914 |
1,115 |
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