ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Measurements made by the lead method (see discussion of several determinations by Holmes3) and the strontium method4 show the age of pegmatites from south-eastern Manitoba as the greatest thus far measured. A like age is found by Hurley5, using helium age determinations, for an east-west orogenic ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/166149a0
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