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Isotopic Ages of Minerals from the Pre-Cambrian Complex of the Malverns

✍ Scribed by LAMBERT, R. ST. J.; REX, D. C.


Book ID
109647988
Publisher
Nature Publishing Group
Year
1966
Tongue
English
Weight
273 KB
Volume
209
Category
Article
ISSN
0028-0836

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A Potash-rich trachyte from the Pre-Camb
✍ R. S. Thorpe πŸ“‚ Article πŸ“… 1971 πŸ› Springer 🌐 English βš– 346 KB

A potash trachyte (containing 13% K20) crops out within the Malvernian (Precambrian) calc-alkaline igneous complex. The chemical composition is similar to that of minor intrusions in areas of alkaline igneous activity. An origin by partial melting of biotite-rich basement rocks is proposed.