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Keywords: intrusive centre
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-069
... Toquepala Group. The oldest rocks exposed in the mine area are the Quellaveco 615 quartz porphyry, followed by rocks of the Toquepala Series and the Alta Series. These rocks were intruded by high-level granitoid plutons and subsequently by rocks of the Toquepala Intrusive Centre. The five rock types...

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