The Geological
Timescale Versus Radiometric Dating
By
Paul Nethercott
November 2014
The Orosirian Period
2,050 To 2,300 Million Years Ago
1. Location of Extraneous Argon,
Chemical Geology, 1990, Volume 80, Pages 201 - 204
|
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
40Ar/39Ar |
|
13,435 |
5,008 |
15,407 |
10,776 |
11,621 |
22,090 |
|
13,287 |
5,410 |
11,804 |
7,689 |
11,396 |
20,742 |
|
13,263 |
5,712 |
7,995 |
7,318 |
11,389 |
20,272 |
|
11,783 |
5,739 |
6,045 |
6,452 |
11,382 |
20187 |
|
9,228 |
5,892 |
|
6,424 |
11,288 |
19,945 |
|
7,492 |
5,983 |
|
5,564 |
11,041 |
16,224 |
|
6,489 |
6,453 |
|
5,360 |
10,889 |
14,689 |
|
6,303 |
6,785 |
|
|
10,873 |
13,750 |
|
6,027 |
6,939 |
|
|
10,736 |
12,780 |
|
5,062 |
7,372 |
|
|
10,729 |
11,961 |
|
|
7,779 |
|
|
10,685 |
11,568 |
|
|
8,071 |
|
|
10,617 |
11,448 |
|
|
|
|
|
10,610 |
10,790 |
|
|
|
|
|
10,578 |
10,310 |
|
|
|
|
|
10,521 |
10,232 |
|
|
|
|
|
10,314 |
8,906 |
|
|
|
|
|
10,102 |
8,311 |
|
|
|
|
|
10,097 |
7,361 |
|
|
|
|
|
9,943 |
|
|
|
|
|
|
9,899 |
|
|
|
|
|
|
9,874 |
|
|
|
|
|
|
9,684 |
|
|
|
|
|
|
9,564 |
|
|
|
|
|
|
9,276 |
|
|
|
|
|
|
9,150 |
|
2. U-Pb Step-Leaching Ages,
Chemical Geology, Volume 236 (2007) Pages 27-41
|
207Pb/206Pb |
207Pb/206Pb |
206Pb/238U |
206Pb/238U |
|
5,014 |
4,821 |
17,743 |
1,906 |
|
5,013 |
4,655 |
10,492 |
1,178 |
|
5,006 |
4,596 |
10,451 |
1,094 |
|
5,003 |
4,591 |
9,734 |
1,091 |
|
4,996 |
4,589 |
9,130 |
1,080 |
|
4,989 |
4,536 |
8,693 |
1,071 |
|
4,987 |
4,444 |
8,228 |
876 |
|
4,986 |
4,317 |
7,569 |
734 |
|
4,983 |
4,274 |
6,954 |
693 |
|
4,977 |
4,266 |
5,983 |
646 |
|
4,965 |
4,261 |
5,664 |
632 |
|
4,949 |
4,240 |
5,618 |
604 |
|
4,944 |
4,176 |
4,689 |
567 |
|
4,935 |
4,137 |
3,689 |
544 |
|
4,873 |
4,128 |
2,444 |
536 |
|
4,850 |
3,978 |
1,970 |
506 |
3. Petrology and Geochemistry of Target Rocks,
Geochimica et Cosmochimica Acta, 1998, Volume 62, Number 12, Pages 2179-2196
|
87Rb/86Sr |
87Rb/86Sr |
87Rb/86Sr |
|
7,015 |
5,980 |
5,384 |
|
6,932 |
5,804 |
5,111 |
|
6,761 |
5,795 |
4,926 |
|
6,322 |
5,687 |
4,576 |
|
6,146 |
5,603 |
4,479 |
|
5,994 |
5,439 |
3,537 |
4. Hebi, North China Craton,
Chemical Geology, Volume 328 (2012), Pages 123–136
|
187Os/188Os |
187Re/188Os |
187Re/188Os |
|
1,794 |
2,100 |
2,300 |
|
2,372 |
2,600 |
2,900 |
|
1,930 |
2,300 |
3,400 |
|
1,901 |
2,200 |
-3,100 |
|
1,356 |
1,800 |
8,400 |
|
1,791 |
2,100 |
2,500 |
|
1,961 |
2,300 |
3,000 |
|
1,953 |
2,300 |
4,600 |
5. 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 |
6. Trace Element And Sr And Nd Isotope,
Earth and Planetary Science Letters, Volume 80, 1986, Pages 281-298
|
147Sm/144Nd |
87Rb/86Sr |
|
2,090 |
2,210 |
|
2,900 |
1,790 |
|
1,450 |
1,660 |
|
1,100 |
1,430 |
|
1,630 |
530 |
|
3,200 |
1,930 |
7. Re–Os Isotopic Results,
Chemical Geology, Volume 291 (2012), Pages 186–198
|
187Os/188Os |
187Re/188Os |
187Re/188Os |
|
655 |
2,050 |
1,260 |
|
-57 |
3,280 |
720 |
|
-93 |
4,630 |
700 |
|
236 |
2,500 |
940 |
|
151 |
10,430 |
910 |
|
-80 |
2,340 |
690 |
|
-675 |
-210 |
250 |
|
-333 |
2,140 |
480 |
|
43 |
2,130 |
780 |
|
583 |
2,590 |
1,220 |
|
-423 |
1,580 |
400 |
|
1,367 |
2,320 |
1,820 |
|
-219 |
3,240 |
580 |
8. Zircon U-Pb Ages Of Guyana Greenstone,
Precambrian Research, Volume 17 (1982), Pages 199-214
|
207Pb/206Pb |
206Pb/238U |
207Pb/235U |
|
2,249 |
2,218 |
44,242 |
|
2,242 |
2,021 |
42,199 |
|
2,236 |
1,838 |
40,561 |
|
2,226 |
1,835 |
39,861 |
|
2,217 |
1,806 |
39,839 |
|
2,210 |
1,776 |
39,833 |
|
2,206 |
1,617 |
37,640 |
|
2,183 |
1,339 |
33,871 |
|
2,177 |
1,327 |
33,447 |
|
2,155 |
878 |
27,142 |
References
1. Location of extraneous argon, Chemical Geology, 1990, Volume 80, Pages 201 - 204
2. U-Pb Step-Leaching Ages, Chemical Geology, Volume 236 (2007) Pages 27-41
3. Petrology and geochemistry of target rocks, Geochimica et Cosmochimica Acta, 1998, Volume 62, Number 12, Pages 2179-2196
4. Hebi, North China Craton, Chemical Geology, Volume 328 (2012), Pages 123–136
5. Lithospheric Mantle Evolution, Lithos, Volume 125, 2011, Pages 405-422
6. Trace Element And Sr And Nd Isotope, Earth and Planetary Science Letters, Volume 80, 1986, Pages 281-298
7. Re–Os Isotopic Results, Chemical Geology, Volume 291 (2012), Pages 186–198
8. Zircon U-Pb Ages Of Guyana Greenstone, Precambrian Research, Volume 17 (1982), Pages 199-214