A Potash-rich trachyte from the Pre-Cambrian of England |
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| Authors: | R. S. Thorpe |
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| Affiliation: | (1) Dept. of Geology, The University of Birmingham, UK;(2) Present address: Department of Earth Sciences, The Open University, Walton Hall, Walton, Bletchley, Buckinghamshire |
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| Abstract: | A potash trachyte (containing 13% K2O) crops out within the Malvernian (Pre-cambrian) 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. |
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