REE in Some Tertiary Volcanic Complexes in the Republic of Macedonia

Tasev, Goran and Serafimovski, Todor (2009) REE in Some Tertiary Volcanic Complexes in the Republic of Macedonia. Geologica Macedonica, 23 (1). pp. 17-25. ISSN O352-1206

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Abstract

Petrological and geochemical features of the Tertiary magmatic rocks from the Republic of Macedonia
were subject of study in this paper. The latest K-Ar, 87Sr/86Sr, and REE data for samples from Kratovo–
Zletovo, Sasa–Toranica and Damjan–Buchim ore districts are presented. Whole rock XRF analyses confirmed host
rock composition as dacites, quartz-latites, trachyandesites, rhyolites and rhyodacites. Absolute age determinations by
the K-Ar dating method have shown ages range from 31 to 14 Ma confirming Oligocene-Miocene age as previously
determined by relative methods. Determinations of 87Sr/86Sr ratios (0.70504 to 0.71126) suggest material is sourced
from the contact zone between the lower crust and upper mantle where contamination of primary melt occurred. 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:	Article
Subjects:	Natural sciences > Earth and related environmental sciences
Divisions:	Faculty of Natural and Technical Sciences
Depositing User:	Goran Tasev
Date Deposited:	21 Nov 2012 18:58
Last Modified:	21 Nov 2012 18:58
URI:	https://eprints.ugd.edu.mk/id/eprint/1578

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