New K-Ar, 87Sr/86Sr, REE, and XRF data for Tertiary volcanic rocks in the Sasa-Toranica ore district, Macedonia

Tasev, Goran and Serafimovski, Todor and Lazarov, Pande (2005) New K-Ar, 87Sr/86Sr, REE, and XRF data for Tertiary volcanic rocks in the Sasa-Toranica ore district, Macedonia. In: Mineral Deposit Research: Meeting the Global Challenge. Society for Geology Applied to Mineral Deposits (SGA), Springer, Beijing, China, pp. 837-840.

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Abstract

The latest K-Ar, 87Sr/86Sr, and REE data for samples from Sasa-Toranica ore district are presented. Whole rock XRF analyses confirm host rock composition as dacites, quartz-latites, trachyandesites and rhyolites. K-Ar absolute ages range from 31 to 14 Ma confirming Oligocene-Miocene age as previously determined by relative methods. 87Sr/86Sr ratios (0.70954 to 0.71126) suggest material is sourced from the contact zone between the lower crust and upper mantle where contamination of primary melt occured. New REE data including negative Eu anomalies along with previously determined La/Yb ratios ranging from 13.3 to 43.0 (Serafimovski 1990) confirm inferred material source. These new data reconfirm previous results, provide insight into the Tertiary magmatic history of the district, and suggest the exact origin of the material that produced the Tertiary magmatic rocks.

Item Type: Book Section
Subjects: Natural sciences > Earth and related environmental sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Goran Tasev
Date Deposited: 21 Nov 2012 18:52
Last Modified: 21 Nov 2012 18:52
URI: http://eprints.ugd.edu.mk/id/eprint/1586

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