Metamorphic rocks
โ Scribed by HARTE, B.
- Book ID
- 109689691
- Publisher
- Nature Publishing Group
- Year
- 1974
- Tongue
- English
- Weight
- 127 KB
- Volume
- 248
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/248261a0
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The distribution of U has been studied in two metamorphic rock-series with a gradient of regional metamorphism. One series ranges from the lowest greenschist to amphibolite facies and the other one shows increasing metamorphic grade from amphibolite to granulite facies. Several medium and high press
Variations in chemistry and related physical properties of sheet silicates in the Ou6goa district with metamorphic grade are investigated. Weakly metamorphosed rocks prior to the crystallization of lawsonite contain phengite (d006 = 3.317-3.323 A), chlorite and occasionally paragonite while interstr