Geochemistry of the Cornubian tin province |
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| Authors: | A Hall |
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| Institution: | 1. Department of Geology, Royal Holloway and Bedford New College, Egham Surrey, TW20 0EX, England
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| Abstract: | The exposed crust of the Cornubian massif in S.W. England has been systematically sampled, and the rocks analysed for a wide range of major and trace elements. Geochemically this region is highly anomalous, with three elements (boron, lithium, tin) occurring at levels several times higher than the average for other parts of the continental crust. The greatest degree of enrichment is found in the rocks of the Cornubian granite batholith, but it is also present in rocks pre-dating the formation of the batholith. The mineral deposits of Cornubia derive their trace elements from different sources: B and Sn from the granite, and Cu and S from the country rocks. |
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