Subject: Physical sciences
Year: 2003
Type: Article
Type: PeerReviewed
Title: Neogene ultrapotassic-potassic volcanic association in the Vardar zone (Macedonia)
Author: Yanev, Yotzo
Author: Boev, Blazo
Author: Doglioni, C.
Author: Innocenti, Fabrizio
Author: Manetti, Piero
Author: Lepitkova, Sonja
Abstract: The studied volcanic rocks in Kumanovo, Sveti Nikole and Demir kapija areas are of Late Miocene - Pilocene age and potassic to ultrapotassic character (Romanian type). They have been clasified as phonotephrites, shoeshoites and latites with high Mg# (> 70) and high Ni and Cr contents indicative of their primitive nature. The volcanics contain phenocrists of Fo - rich olivine, diopside to augite, phlogopite to Ba - and Ti - rich biotete (close to a kinoshitalite) in a groundmass consisting of microlites of the same minerals + leucite. Ti - magnetite +-ilmenite enclosed by Na - sanidine and/or anorthose. The rocks are significantly enriched in LILE and show negative Ta, Nb, Ti an positive Pb anomalies. The trace elements distribution for ultrapotassic varieties
Publisher: Bulgarian Academy of Science
Relation: https://eprints.ugd.edu.mk/1426/
Identifier: oai:eprints.ugd.edu.mk:1426
Identifier: https://eprints.ugd.edu.mk/1426/1/2003CRABS__56d__53Y.pdfIdentifier: Yanev, Yotzo and Boev, Blazo and Doglioni, C. and Innocenti, Fabrizio and Manetti, Piero and Lepitkova, Sonja (2003) Neogene ultrapotassic-potassic volcanic association in the Vardar zone (Macedonia). Comptes Rendus de l'Academie Bulgare des Sciences, 56 (4). pp. 53-58.
