The Geological Timescale Versus Radiometric Dating

By Paul Nethercott
October 2014

The Cryogenian Period

850 To 1,000 Million Years Ago

1. Melt Peridotite Reactions,

Journal Of Petrology, 2010, Volume 51, Number 7, Pages 1417-1445

207Pb/206Pb	176Lu/177Hf
5,050	955
5,041	650
5,031	540
5,027	494
5,019	484
5,018	469
5,015	405
5,009	362
5,008	348
5,007	331
5,005	299
5,003	279
5,003	279
5,003	262
5,001
4,999
4,999

2. Rocks of the Central Wyoming Province,

Canadian Journal Of Earth Science, 2006, Volume 43, Pages 1419-1444

87Rb/86Sr	207Pb/206Pb	208Pb/232Th	206Pb/238U	147Sm/144Nd
2,952	5,294	38,746	18,985	2,954
2,951	5,287	37,951	18,324	2,952
2,951	5,286	35,596	17,028	2,952
2,951	5,281	26,410	16,581	2,952
2,951	5,275	26,332	15,957	2,952
2,950	5,250	26,280	14,562	2,951
2,950	5,231	25,630	13,022	2,951
2,950	5,215	24,363	12,915	2,951
2,950	5,206	23,152	12,875	2,951
2,950	5,205	21,599	12,850	2,951
2,950	5,201	20,970	12,803	2,951
2,950	5,190	19,442	12,614	2,951
2,950	5,177	16,203	12,260	2,950
2,948	5,169	16,133	11,287	2,950
2,933	5,165	12,986	11,024	2,950
2,885	5,154	12,193	10,626	2,887
2,848	5,145	10,794	10,214	2,850
2,846	5,112	10,724	10,093	2,848
2,846	5,106	10,722	10,047	2,847
2,846	5,079	10,673	9,947	2,847
2,846	5,046	9,809	9,106	2,847
2,846	5,034	9,001	8,833	2,847
2,846	5,028	8,723	8,379	2,847
2,845	4,972	7,926	8,177	2,846
2,845	4,947	7,583	8,098	2,845
2,845	4,882	6,685	7,575	2,845
2,845	4,853	6,650	7,294	2,845
2,844	4,662			2,845

3. 40Ar/39Ar Chronology,

Meteoritics And Planetary Science, 2009, Volume 44, Number 2, Pages 293 – 321

Sample	Maximum Age	Minimum Age	Average Age	Age Difference
Name	Million Years	Million Years	Million Years	Million Years
Table A01. Dhofar 019 whole rock	11,679	737	2,883	10,942
Table A02. Dhofar 019 maskelynite	10,521	818	2,674	9,703
Table A03. Dhofar 019 pyroxene	10,730	804	3,694	9,926
Table A04. Dhofar 019 olivine	10,487	1,778	4,549	8,709
Table A05. Dhofar 019 opaque	14,917	4,420	8,453	10,497
Table A06. SaU 005 whole rock	7,184	568	1,653	6,616
Table A07. SaU 005 glass	6,235	3,247	4,242	2,988
Table A08. SaU 005 maskelynite	7,432	1,344	3,899	6,088
Table A10. SaU 005 olivine	13,979	3,839	6,559	10,140
Table A11. Shergotty whole rock	8,542	1,112	2,995	7,430
Table A12. Shergotty glass	3,637	355	1,199	3,282
Table A13. Shergotty maskelynite	3,887	1,433	2,973	2,454
Table A14. Shergotty pyroxene	3,274	134	696	3,140
Table A15. Zagami whole rock	6,064	94	2,276	5,970
Table A16. Zagami maskelynite	5,733	238	1,202	5,495
Table A17. Zagami pyroxene	1,344	198	375	1,146
Table A18. Zagami opaque	7,707	290	1,525	7,417
Table A09. SaU 005 pyroxene	12,845	1,354	4,763	11,491

References

1.             Melt Peridotite Reactions, Journal Of Petrology, 2010, Volume 51, Number 7, Pages 1417-1445

2.             Rocks of the Central Wyoming Province, Canadian Journal Of Earth Science, 2006, Volume 43, Pages 1419-1444

3.             40Ar-39Ar Chronology, Meteoritics And Planetary Science, 2009, Volume 44, Number 2, Pages 293 – 321

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