弗拉希纳山（保加利亚西南部）的寒武纪岩浆活动——与Vertiskos单元（Serbo Macedonian Massif）的相关性

IF 0.2 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI:10.52215/rev.bgs.2022.83.2.41

P. Machev, Lyubomirka Macheva, J. Plotkina, Е.V. Salnikova, M. Stifeeva, Irena Peycheva

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引用次数: 0

摘要

Rhodope地块和Kraishte带是由Gabrovdol分离的内部巴尔干半岛的一部分。在保加利亚的最西南部，塞尔维亚-马其顿山脉的一个单位(罗多彼山脉的西部)出现了维特斯科斯单位。在弗拉希纳山中部约60 km2的范围内，暴露出以变质岩-中闪长岩为代表的该单元的一部分。这些岩石在较低角闪岩相条件下(T = 630 ~ 670℃，P = 0.85 ~ 1.05 GPa)变质。锆石LA-ICP-MS U-Pb测年结果显示，这些岩石的年龄为541±2.6 Ma。岩石学和同位素研究表明，这些岩石与Vertiskos单元的岩石有显著差异，并使我们能够将这些岩石分配给Kraishte带(Struma单元)的基底。

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Cambrian magmatism in the Vlahina Mt. (SW Bulgaria) – correlation with the Vertiskos Unit (Serbo-Macedonian Massif)

The Rhodope massif and the Kraishte Zone are parts of the Internal Balkanides separated by Gabrovdol detachment. In the most southwestern part of Bulgaria one of the units of the Serbo-Macedonian Massif (the western part of the Rhodope Massif) the Vertiskos Unit crops out. Part of this unit represented by metagabbro-metadiorites is exposed in an area of about 60 km2 in the central part of the Vlahina Mountain. These rocks are metamorphosed at lower amphibolite facies conditions (T = 630–670 °C and P = 0.85–1.05 GPa). LA-ICP-MS U-Pb dating of zircons display concordant age of these rocks of 541±2.6 Ma. The petrological and isotopic investigations show significant differences with the rocks of the Vertiskos Unit and allow us to assign these rocks to the basement of the Kraishte zone (Struma Unit).

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society GEOSCIENCES, MULTIDISCIPLINARY-

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