The Geological
Timescale Versus Radiometric Dating
By
Paul Nethercott
October 2014
The Permian Period
254.2 To 303.7 Million Years Ago
1. U-Pb Dating Of A Fossil Tooth,
Earth and Planetary Science Letters, Volume 174 (1999), Pages 75-80
|
206Pb/238U |
206Pb/238U |
|
362 |
570 |
|
445 |
692 |
|
452 |
712 |
|
467 |
768 |
|
546 |
823 |
|
556 |
951 |
|
558 |
1,001 |
|
566 |
|
2. U–Th–Pb dating, Chemical Geology,
Volume 371 (2014), Pages 46–59
|
207Pb/235U |
207Pb/235U |
207Pb/235U |
207Pb/235U |
207Pb/235U |
207Pb/235U |
|
683 |
555 |
539 |
477 |
383 |
7 |
|
683 |
555 |
535 |
473 |
356 |
-22 |
|
600 |
554 |
535 |
473 |
356 |
-26 |
|
600 |
551 |
534 |
449 |
320 |
-47 |
|
588 |
550 |
533 |
430 |
319 |
-84 |
|
575 |
549 |
530 |
430 |
281 |
-88 |
|
567 |
547 |
526 |
424 |
196 |
-88 |
|
566 |
545 |
526 |
420 |
159 |
-115 |
|
565 |
545 |
526 |
419 |
147 |
-141 |
|
564 |
545 |
521 |
417 |
137 |
-141 |
|
564 |
544 |
521 |
416 |
97 |
-255 |
|
559 |
543 |
492 |
414 |
94 |
-271 |
|
559 |
542 |
492 |
405 |
80 |
-2,251 |
|
559 |
541 |
489 |
405 |
25 |
-2,251 |
|
558 |
540 |
489 |
386 |
11 |
-4,491 |
|
208Pb/232Th |
208Pb/232Th |
208Pb/232Th |
208Pb/232Th |
208Pb/232Th |
208Pb/232Th |
|
10,856 |
10,232 |
10,007 |
9,863 |
9,738 |
9,539 |
|
10,856 |
10,220 |
9,999 |
9,838 |
9,713 |
9,487 |
|
10,606 |
10,207 |
9,999 |
9,838 |
9,713 |
9,475 |
|
10,558 |
10,207 |
9,999 |
9,826 |
9,713 |
9,475 |
|
10,522 |
10,207 |
9,994 |
9,826 |
9,713 |
9,475 |
|
10,510 |
10,195 |
9,974 |
9,826 |
9,701 |
9,437 |
|
10,410 |
10,183 |
9,937 |
9,814 |
9,694 |
9,424 |
|
10,377 |
10,159 |
9,937 |
9,813 |
9,688 |
9,399 |
|
10,377 |
10,134 |
9,912 |
9,813 |
9,688 |
9,399 |
|
10,353 |
10,110 |
9,912 |
9,801 |
9,676 |
9,335 |
|
10,293 |
10,097 |
9,900 |
9,799 |
9,663 |
9,335 |
|
10,293 |
10,085 |
9,900 |
9,788 |
9,626 |
9,297 |
|
10,293 |
10,060 |
9,888 |
9,788 |
9,626 |
9,297 |
|
10,268 |
10,024 |
9,875 |
9,776 |
9,563 |
9,220 |
|
10,268 |
10,011 |
9,863 |
9,751 |
9,550 |
9,130 |
|
206Pb/238U |
206Pb/238U |
206Pb/238U |
206Pb/238U |
206Pb/238U |
206Pb/238U |
|
4,910 |
3,421 |
3,252 |
3,130 |
3,014 |
2,601 |
|
4,910 |
3,379 |
3,244 |
3,130 |
3,002 |
2,596 |
|
4,188 |
3,371 |
3,243 |
3,126 |
3,002 |
2,588 |
|
4,188 |
3,371 |
3,232 |
3,126 |
2,973 |
2,555 |
|
3,717 |
3,351 |
3,228 |
3,110 |
2,973 |
2,549 |
|
3,717 |
3,317 |
3,224 |
3,110 |
2,867 |
2,545 |
|
3,604 |
3,317 |
3,209 |
3,102 |
2,854 |
2,377 |
|
3,574 |
3,317 |
3,201 |
3,098 |
2,854 |
2,256 |
|
3,515 |
3,316 |
3,189 |
3,094 |
2,699 |
2,238 |
|
3,496 |
3,306 |
3,173 |
3,082 |
2,699 |
2,238 |
|
3,481 |
3,302 |
3,165 |
3,082 |
2,695 |
2,178 |
|
3,451 |
3,271 |
3,164 |
3,070 |
2,674 |
2,053 |
|
3,432 |
3,271 |
3,154 |
3,046 |
2,665 |
2,020 |
|
3,428 |
3,263 |
3,148 |
3,046 |
2,631 |
1,954 |
|
3,428 |
3,255 |
3,142 |
3,038 |
2,622 |
1,647 |
3. Pb, Sr, and Nd Isotopic Features,
Geochimica et Cosmochimica Acta, 2001, Volume 65, Number 15, Pages 2555-2570
|
207Pb/206Pb |
207Pb/206Pb |
207Pb/206Pb |
87Rb/86Sr |
|
6,471 |
5,049 |
5,018 |
24,661 |
|
6,466 |
5,046 |
5,016 |
4,164 |
|
5,097 |
5,045 |
5,015 |
745 |
|
5,085 |
5,043 |
5,014 |
702 |
|
5,081 |
5,042 |
5,013 |
698 |
|
5,075 |
5,041 |
5,012 |
678 |
|
5,070 |
5,040 |
5,010 |
663 |
|
5,068 |
5,039 |
5,009 |
630 |
|
5,067 |
5,038 |
5,007 |
625 |
|
5,066 |
5,037 |
5,005 |
610 |
|
5,065 |
5,034 |
5,004 |
565 |
|
5,063 |
5,032 |
5,002 |
328 |
|
5,062 |
5,031 |
5,001 |
311 |
|
5,061 |
5,030 |
4,996 |
303 |
|
5,060 |
5,029 |
4,992 |
286 |
|
5,059 |
5,027 |
4,990 |
284 |
|
5,058 |
5,026 |
4,987 |
277 |
|
5,057 |
5,025 |
4,985 |
276 |
|
5,056 |
5,024 |
4,982 |
272 |
|
5,054 |
5,023 |
4,981 |
271 |
|
5,053 |
5,022 |
4,978 |
251 |
|
5,052 |
5,021 |
4,976 |
242 |
|
5,051 |
5,020 |
4,973 |
233 |
|
5,050 |
5,019 |
4,965 |
182 |
References
1. U-Pb Dating Of A Fossil Tooth, Earth and Planetary Science Letters, Volume 174 (1999), Pages 75-80
2. U–Th–Pb dating, Chemical Geology, Volume 371 (2014), Pages 46–59
3. Pb, Sr, and Nd Isotopic Features, Geochimica et Cosmochimica Acta, 2001, Volume 65, Number 15,
Pages 2555-2570