𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the origin of pingos — A reply

✍ Scribed by H. Ryckborst


Book ID
115969897
Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
207 KB
Volume
30
Category
Article
ISSN
0022-1694

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On the origin of pingos
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The use of metamorphosed basic dykes as one of the most important single field criteria for subdividing gneisses in high grade areas into different chronological units is defended. The universal applicability of the "lower greenstone-granite-upper greenstone" model to all Archaean terrains is questi