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:	https://eprints.ugd.edu.mk/id/eprint/1586

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