ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The Nd isotope composition of chemical and clastic sediments surviving from the Archaean provides no evidence for the existence of pre-4,000-Myr continental crust. Either the amounts of such crust were trivial or it was destroyed substantially by 3,800 Myr ago. Nd in major Precambrian banded iron ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/314325a0