Late Miocene volcanism in the Tikveš Valley – North Macedonia

Boev, Ivan and Serafimovski, Dalibor and Dimov, Gorgi (2022) Late Miocene volcanism in the Tikveš Valley – North Macedonia. Geologica macedonica, 36 (1). pp. 19-36. ISSN 0352-1206

Text LATE MIOCEN VOLCANISM IN THE TIKVEŠ VALLEY – NORTH MACEDONIA.pdf Download (2MB)

Abstract

Late Miocene volcanism in the Tikveš Valley (MRZEN locality) is characterized by the occurrence
of volcanic rocks and it is the beginning of volcanic activity in the southern parts of the Republic of North Macedonia;
It occurs on the transverse tectonic structures with E-W direction that are a consequence of the extension that occurred
in this region in the period of about 10 Ma (in the region of Mrzen 8.32 Ma) and which is a direct consequence of the
subduction processes in the Aegean region. The chemical and geochemical characteristics of volcanic rocks indicate
that these are rocks that have an intermediate character, but also contain olivine as phenocrysts, so based on that could
be defined as alkaline basalts. The PEE content as well as the strontium isotopes (
87Sr/86Sr) content range in the interval
0.706671–0.706795, while the neodymium isotopes 143Nd/144Nd range in the interval 0.512441–0.512472. Strontium
isotopes (87Sr/86Sr) clearly indicate the origin of the primary magma from which these volcanic rocks differentiated.
The source of the magma is unambiguously in the upper layer and therefore these rocks differ from the Pliocene
volcanism on Kožuf Mountain where the strontium isotopes are in the range 0.7080-0.7090.

Item Type:	Article
Subjects:	Natural sciences > Earth and related environmental sciences
Divisions:	Faculty of Natural and Technical Sciences
Depositing User:	Ivan Boev
Date Deposited:	09 Aug 2022 11:10
Last Modified:	09 Aug 2022 11:10
URI:	https://eprints.ugd.edu.mk/id/eprint/29962

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