ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The organic radical signals have been observed in Upper Cretaceous lepispheric cherts from Europe and the Middle East, and in Tertiary chalcedonic cherts from south-west France. The chalcedonic cherts comprise a coarse, fibrous a-quartz (chalcedony) and the lepispheric cherts predominantly comprise ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/300435a0
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