The Geological
Timescale Versus Radiometric Dating
By
Paul Nethercott
November 2014
The Stenian Period
1,200 To 1,400 Million Years Ago
1. Trans-North China Orogen: U-Pb Dating,
Journal Of Petrology, 2010, Volume 51, Numbers 1 & 2, Pages 537-571
|
207Pb/206Pb |
207Pb/235U |
206Pb/238U |
208Pb/232Th |
|
287 |
202 |
199 |
204 |
|
283 |
201 |
198 |
197 |
|
283 |
200 |
196 |
191 |
|
265 |
199 |
178 |
184 |
|
256 |
198 |
173 |
177 |
|
256 |
197 |
141 |
170 |
|
250 |
187 |
140 |
154 |
|
239 |
187 |
136 |
145 |
|
233 |
162 |
125 |
144 |
|
221 |
157 |
124 |
132 |
|
217 |
148 |
122 |
125 |
|
213 |
135 |
122 |
125 |
|
211 |
134 |
119 |
124 |
|
211 |
126 |
119 |
120 |
|
209 |
124 |
117 |
116 |
|
198 |
122 |
114 |
114 |
|
195 |
121 |
112 |
113 |
|
176 |
120 |
111 |
111 |
|
167 |
119 |
108 |
109 |
|
161 |
117 |
103 |
108 |
|
154 |
112 |
101 |
107 |
|
150 |
111 |
101 |
106 |
|
146 |
110 |
100 |
104 |
|
139 |
106 |
100 |
103 |
|
139 |
104 |
98 |
98.3 |
|
132 |
100 |
91 |
98 |
|
117 |
99 |
85 |
69 |
|
115 |
94 |
66 |
60 |
|
109 |
94 |
64 |
49 |
|
102 |
69 |
64 |
43 |
2. Isotopic Systematics of Ultramafic Xenoliths,
Chemical Geology, Volume 248, 2008, Pages 40-61
|
87Rb/86Sr |
147Sm/144Nd |
176Lu/177Hf |
206Pb/238U |
207Pb/206Pb |
|
176 |
150 |
1,905 |
9,489 |
5,049 |
|
156 |
150 |
152 |
1,821 |
5,035 |
|
151 |
150 |
151 |
338 |
5,034 |
|
132 |
150 |
150 |
95 |
5,029 |
|
128 |
150 |
150 |
|
5,012 |
|
|
150 |
150 |
|
5,009 |
|
|
150 |
150 |
|
5,006 |
|
|
150 |
150 |
|
5,004 |
|
|
150 |
150 |
|
4,970 |
|
|
|
|
|
4,958 |
|
|
|
|
|
4,952 |
3. Diamonds And Mantle-Derived Xenoliths,
Earth and Planetary Science Letters, Volume 42 (1979), Pages 58-70
|
Pb207/Pb206 |
Pb207/Pb206 |
|
5,249 |
4,934 |
|
5,231 |
4,919 |
|
5,097 |
4,913 |
|
5,053 |
4,910 |
|
5,040 |
4,904 |
|
4,953 |
4,898 |
|
4,944 |
4,885 |
4. Strontium, Neodymium and Lead Isotopes,
Earth and Planetary Science Letters, Volume 90, 1988, Pages 26-40
|
Pb207/Pb206 |
Pb207/Pb206 |
|
4,933 |
4,928 |
|
4,961 |
4,956 |
|
4,952 |
4,947 |
|
4,952 |
4,957 |
|
4,942 |
4,927 |
|
4,978 |
4,952 |
|
4,940 |
4,954 |
|
4,947 |
|
5. Age and Origin of Base and Precious Metal,
Economic Geology, 2002, Volume 97, Pages 23 – 42
|
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
|
23,312 |
1,573 |
1,246 |
1,109 |
971 |
670 |
|
7,816 |
1,570 |
1,245 |
1,104 |
968 |
661 |
|
6,953 |
1,563 |
1,241 |
1,092 |
966 |
655 |
|
6,105 |
1,490 |
1,231 |
1,091 |
953 |
641 |
|
4,475 |
1,480 |
1,230 |
1,090 |
918 |
624 |
|
4,291 |
1,467 |
1,222 |
1,088 |
909 |
620 |
|
3,516 |
1,465 |
1,220 |
1,085 |
902 |
593 |
|
3,028 |
1,460 |
1,216 |
1,077 |
896 |
589 |
|
2,696 |
1,454 |
1,203 |
1,076 |
890 |
588 |
|
2,680 |
1,432 |
1,195 |
1,072 |
886 |
551 |
|
2,630 |
1,413 |
1,190 |
1,067 |
873 |
550 |
|
2,549 |
1,405 |
1,188 |
1,063 |
873 |
546 |
|
2,453 |
1,383 |
1,186 |
1,057 |
842 |
527 |
|
2,209 |
1,370 |
1,181 |
1,056 |
838 |
466 |
|
2,135 |
1,331 |
1,172 |
1,056 |
827 |
449 |
|
1,889 |
1,317 |
1,167 |
1,055 |
797 |
406 |
|
1,880 |
1,295 |
1,167 |
1,052 |
793 |
395 |
|
1,855 |
1,280 |
1,163 |
1,048 |
791 |
385 |
|
1,837 |
1,279 |
1,147 |
1,044 |
779 |
278 |
|
1,799 |
1,273 |
1,131 |
1,024 |
779 |
225 |
|
1,727 |
1,271 |
1,129 |
1,023 |
754 |
133 |
|
1,717 |
1,262 |
1,128 |
1,009 |
753 |
123 |
|
1,712 |
1,260 |
1,127 |
1,001 |
726 |
121 |
|
1,628 |
1,259 |
1,120 |
988 |
719 |
111 |
|
1,615 |
1,259 |
1,110 |
972 |
682 |
79 |
6. Antarctic LL-Chondrites,
Geochemica Et Cosmochemica Acta, 1990, Volume 54, Pages 3509 - 3523
|
Rb/Sr |
U-Th |
K-Ar |
|
5,130 |
3,550 |
3,970 |
|
7,330 |
840 |
1,320 |
|
4,910 |
820 |
1,310 |
|
4,670 |
810 |
1,310 |
|
4,580 |
760 |
1,260 |
|
4,570 |
750 |
1,260 |
|
4,520 |
550 |
1,030 |
|
4,450 |
|
|
|
4,330 |
|
|
|
4,240 |
|
|
|
4,120 |
|
|
|
3,760 |
|
|
|
3,750 |
|
|
|
3,640 |
|
|
|
3,500 |
|
|
|
3,110 |
|
|
7. Nd–Hf–Sr–Pb Isotopes,
Chemical Geology, Volume 236, 2007, Pages 291–302
|
207Pb/206Pb |
208Pb/232Th |
206Pb/238U |
87Rb/86Sr |
|
5,162 |
23,132 |
14,131 |
1,232 |
|
5,162 |
16,021 |
12,167 |
1,226 |
|
5,101 |
10,400 |
7,248 |
1,225 |
|
5,057 |
10,382 |
5,673 |
1,224 |
|
5,032 |
9,673 |
5,481 |
1,223 |
|
4,935 |
6,515 |
5,018 |
1,222 |
|
4,912 |
5,592 |
|
1,220 |
|
4,908 |
5,372 |
|
1,218 |
|
4,856 |
4,902 |
|
1,215 |
|
|
4,854 |
|
1,207 |
8. Northern Canadian Cordillera Xenoliths,
Geochimica et Cosmochimica Acta, 2000, Volume 64, Number 17, Pages 3061-3071
|
187Re/188Os |
187Re/188Os |
187Os/188Os |
|
|
80 |
-530 |
|
-1 |
460 |
-84 |
|
|
-1 |
-924 |
|
|
500 |
-40 |
|
-1 |
430 |
-122 |
|
-1 |
100 |
-513 |
|
-1 |
520 |
-24 |
|
320 |
-1 |
-1,053 |
|
-1 |
480 |
-62 |
|
|
1,110 |
685 |
|
-1 |
220 |
-366 |
|
|
520 |
-24 |
|
550 |
350 |
-215 |
|
2,400 |
250 |
-340 |
|
4,500 |
630 |
109 |
|
-1 |
920 |
459 |
|
-1 |
-1 |
-721 |
|
540 |
-1 |
-1,983 |
|
680 |
640 |
120 |
|
610 |
510 |
-26 |
|
-1 |
330 |
-237 |
|
840 |
750 |
251 |
|
|
|
37 |
|
-1 |
-1 |
-939 |
|
|
|
-973 |
9. 40Ar/39Ar Step Heating Of Biotite,
Earth and Planetary Science Letters, 1975, Volume 26, Pages 387 - 408
|
Sample |
Maximum Age |
Minimum Age |
Difference |
|
22500 |
1,235 |
963 |
272 |
|
14100 |
1,251 |
1,100 |
151 |
|
5200 |
1,205 |
677 |
528 |
|
3600 |
982 |
733 |
249 |
|
2400 |
566 |
350 |
217 |
|
1130 |
515 |
288 |
226 |
|
248 |
145 |
79 |
66 |
|
COA |
177 |
79 |
98 |
10. The Imataca Complex, Ar39/Ar40 Dating In Venezuela,
Precambrian Research, 1989, Volume 42, Pages 255 - 291
|
Sample |
Maximum Age |
Minimum Age |
Average Age |
Age Difference |
|
28 Plagioclase |
5,065 |
1,080 |
1,822 |
3,985 |
|
28 Hornblende |
3,612 |
1,815 |
2,223 |
1,797 |
|
33 K Feldspar |
2,695 |
1,105 |
1,442 |
1,590 |
|
34 Plagioclase |
4,074 |
1,221 |
2,071 |
2,853 |
|
34 Biotite |
1,640 |
1,348 |
1,427 |
292 |
|
34 Hornblende |
2,220 |
1,405 |
1,792 |
815 |
|
48 Biotite |
2,272 |
992 |
1,222 |
1,280 |
|
48 Hornblende |
1,258 |
1,058 |
1,236 |
200 |
|
115 Biotite coarse |
2,309 |
1,642 |
1,798 |
667 |
|
115 Biotite fine |
1,561 |
1,384 |
1,441 |
177 |
|
126 K Feldspar |
1,558 |
614 |
1,350 |
944 |
|
269 Biotite |
4,241 |
1,106 |
1,413 |
3,135 |
|
126 Biotite |
1,781 |
1,452 |
1,712 |
329 |
|
146 K Feldspar |
2,110 |
668 |
1,286 |
1,442 |
|
146 Biotite |
2,397 |
1,203 |
1,369 |
1,194 |
|
269 K Feldspar |
2,341 |
1,393 |
2,038 |
948 |
11. Lithospheric Mantle Evolution,
Lithos, Volume 125 (2011), Pages 405–422
|
187Os/188Os |
187Re/188Os |
187Re/188Os |
|
-6 |
550 |
350 |
|
-2,281 |
-1,820 |
-1,750 |
|
-906 |
-660 |
-480 |
|
583 |
1,510 |
870 |
|
1,647 |
2,200 |
1,820 |
|
-1,512 |
3,880 |
-1,040 |
|
3,398 |
4,840 |
3,360 |
|
829 |
1,150 |
1,090 |
|
1,042 |
2,090 |
1,290 |
|
616 |
1,750 |
900 |
|
469 |
1,460 |
760 |
|
1,991 |
3,700 |
2,130 |
|
2,024 |
8,620 |
2,160 |
|
1,500 |
-3,610 |
1,700 |
|
1,173 |
-12,070 |
1,410 |
|
1,778 |
-9,600 |
1,940 |
|
976 |
1,430 |
1,230 |
|
1,614 |
3,420 |
1,800 |
|
92 |
900 |
440 |
|
1,385 |
2,360 |
1,600 |
|
731 |
1,610 |
1,010 |
|
812 |
1,570 |
1,080 |
|
1,025 |
1,400 |
1,270 |
|
698 |
1,110 |
970 |
|
911 |
-24,710 |
1,170 |
|
-1,364 |
-1,570 |
-900 |
|
-1,413 |
-3,510 |
-950 |
12. Oikocrysts from the Norra Ulvo Gabbro,
Journal Of Petrology, February 9, 2007
|
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
207Pb/204Pb |
|
5,017 |
4,996 |
4,990 |
4,980 |
4,972 |
|
5,017 |
4,996 |
4,987 |
4,980 |
4,972 |
|
5,015 |
4,994 |
4,987 |
4,978 |
4,972 |
|
5,012 |
4,994 |
4,987 |
4,977 |
4,971 |
|
5,012 |
4,994 |
4,986 |
4,977 |
4,971 |
|
5,012 |
4,993 |
4,985 |
4,977 |
4,971 |
|
5,011 |
4,993 |
4,985 |
4,976 |
4,970 |
|
5,011 |
4,993 |
4,985 |
4,976 |
4,970 |
|
5,011 |
4,992 |
4,985 |
4,975 |
4,968 |
|
5,010 |
4,992 |
4,985 |
4,974 |
4,968 |
|
5,009 |
4,992 |
4,984 |
4,974 |
4,968 |
|
5,009 |
4,991 |
4,984 |
4,974 |
4,968 |
|
5,008 |
4,991 |
4,984 |
4,974 |
4,967 |
|
5,007 |
4,991 |
4,983 |
4,973 |
4,966 |
|
5,006 |
4,990 |
4,983 |
4,973 |
4,966 |
|
5,002 |
4,990 |
4,983 |
4,973 |
4,963 |
|
5,002 |
4,990 |
4,983 |
4,973 |
4,963 |
|
5,001 |
4,990 |
4,982 |
4,973 |
4,963 |
|
4,997 |
4,990 |
4,981 |
4,973 |
4,963 |
|
4,997 |
4,990 |
4,981 |
4,972 |
4,963 |
13. Sr-Nd-Pb-O Isotopic Constraints,
Geochemistry And Geophysics Geosystems, 2006, Volume 7, Number 8, Pages 1-29
|
207Pb/206Pb |
206Pb/238U |
208Pb/232Th |
|
5,000 |
2,646 |
68,343 |
|
5,001 |
5,013 |
67,704 |
|
5,007 |
3,745 |
70,277 |
|
5,007 |
4,715 |
71,706 |
|
4,988 |
5,560 |
95,541 |
|
4,997 |
6,944 |
99,275 |
14. The Beni Bousera Ultramafic Complex of Northern Morocco,
Geochimica et Cosmochimica Acta, 1996, Volume 60, Number 8, Pages 1429-1444
|
187Os/186Os |
|
-354,751 |
|
-355,736 |
|
-361,842 |
|
-165,065 |
|
-124,882 |
15. 40Ar-39Ar Studies of Whole Rock Nakhlites,
Meteoritics And Planetary Science, 2004, Volume 39, Number 5, Pages 755 - 766
|
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
|
1,405 |
1,409 |
1,425 |
|
1,371 |
1,400 |
1,412 |
|
1,351 |
1,394 |
1,402 |
|
1,334 |
1,392 |
1,401 |
|
1,327 |
1,383 |
1,383 |
|
1,323 |
1,357 |
1,379 |
|
1,320 |
1,356 |
1,371 |
|
1,317 |
1,350 |
1,359 |
|
1,317 |
1,341 |
1,336 |
|
1,316 |
1,339 |
1,335 |
|
1,313 |
1,338 |
1,334 |
|
1,311 |
1,335 |
1,325 |
|
1,263 |
1,327 |
1,324 |
|
1,251 |
1,325 |
1,314 |
|
1,235 |
1,322 |
1,304 |
|
1,186 |
1,321 |
1,292 |
|
1,168 |
1,314 |
1,259 |
|
1,111 |
1,295 |
1,189 |
|
1,052 |
1,294 |
1,181 |
|
852 |
1,283 |
1,177 |
|
753 |
1,196 |
1,124 |
|
582 |
1,069 |
1,110 |
|
470 |
1,048 |
984 |
|
331 |
1,018 |
801 |
|
262 |
727 |
761 |
16. The Petrogenetic Association of Carbonatite,
Journal Of Petrology, 1999, Volume 40, Number 4, Pages 525-548
|
87Rb/86Sr |
87Rb/86Sr |
|
-66,499 |
1,395 |
|
-36,489 |
1,412 |
|
-22,990 |
1,413 |
|
-16,010 |
1,417 |
|
-14,928 |
1,420 |
|
-10,214 |
1,427 |
|
-8,808 |
1,428 |
|
-2,013 |
1,453 |
|
-1,499 |
1,501 |
|
-589 |
1,541 |
|
524 |
1,607 |
|
1,323 |
1,787 |
|
1,325 |
2,762 |
References
1. Trans-North China Orogen: U-Pb Dating, Journal Of Petrology, 2010, Volume 51, Numbers 1 & 2, Pages 537-571
2. Isotopic Systematics of Ultramafic Xenoliths, Chemical Geology, Volume 248, 2008, Pages 40-61
3. Diamonds And Mantle-Derived Xenoliths, Earth and Planetary Science Letters, Volume 42 (1979), Pages 58-70
4. Strontium, neodymium and lead isotopic, Earth and Planetary Science Letters, Volume 90, 1988, Pages 26-40
5. Age and Origin of Base and Precious Metal, Economic Geology, 2002, Volume 97, Pages 23 - 42
6. Antarctic LL-chondrites, Geochemica Et Cosmochemica Acta, 1990, Volume 54, Pages 3509 - 3523
7. Nd–Hf–Sr–Pb isotopes, Chemical Geology, Volume 236, 2007, Pages 291–302
8. Northern Canadian Cordillera Xenoliths, Geochimica et Cosmochimica Acta, 2000, Volume 64, Number 17,
Pages 3061-3071
9. 40Ar/39Ar Step Heating Of Biotite, Earth and Planetary Science Letters, 1975, Volume 26, Pages 387 - 408
10. The Imataca Complex, Venezuela, Precambrian Research, 1989, Volume 42, Pages 255 - 291
11. Lithospheric Mantle Evolution, Lithos, Volume 125 (2011), Pages 405–422
12. Oikocrysts from the Norra Ulvo Gabbro, Journal Of Petrology, February 9, 2007
13. Sr-Nd-Pb-O Isotopic Constraints, Geochemistry And Geophysics Geosystems, 2006, Volume 7, Number 8,
Pages 1-29
14. The Beni Bousera Ultramafic Complex of Northern Morocco, Geochimica et Cosmochimica Acta, 1996,
Volume 60, Number 8, Pages 1429-1444
15. 40Ar-39Ar Studies of Whole Rock Nakhlites, Meteoritics And Planetary Science, 2004, Volume 39,
Number 5, Pages 755 - 766
16. The Petrogenetic Association of Carbonatite, Journal Of Petrology, 1999, Volume 40, Number 4, Pages 525-548