Electronic Resource
[s.l.]
:
Nature Publishing Group
Nature
165 (1950), S. 488-489
ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The simplest explanation of-these facts seems to be that the chalk was first broken into angular 'head' by frost action at some time before the arrival of the ice-sheet, and the ice which advanced later over the frost-shattered surface derived much of its chalk-content from this 'head', rounding ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/165488b0
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