The north-vergent Balkan fold–thrust belt of the Balkanide orogen, extending from northeast Serbia to the Black Sea region, was formed during at least two Alpine compressional events. However, remnants of the Variscan orogen are still preserved in its western and central parts. In the central part (Central Stara Planina Mountains), two pre-Permian metamorphic complexes of contrasting metamorphic degrees, the low-grade Stara Planina and high-grade Sredna Gora complexes, are juxtaposed along a major Variscan tectonic zone and intruded by voluminous granitoids of previously unknown age. Here, we present an extensive structural and U–Pb (TIMS and LA-ICP-MS) geochronological analysis, constraining several magmatic and tectonic events in the pre-Alpine evolution of the area. For the first time, early Cambrian magmatism (531.7 ± 1.5 Ma/519.4 ± 2 Ma) is reported from a granite intruding the low-grade Stara Planina complex. The juxtaposition of the metamorphic complexes before 314 Ma was followed by a transpressional stage between 313 and 306 Ma. The last Variscan penetrative ductile deformation was associated with the final emplacement stages of the Ambaritsa sheet-like pluton at about 306 Ma under still ongoing compression. In addition, at least two post-Variscan magmatic pulses of granitoid magmatism (at ca. 306–304 Ma and 250 Ma) have been distinguished in the studied area. Later, Alpine ductile to brittle deformational events led to an additional reworking of the Variscan edifice.

在至少两次高山压缩事件中形成了巴尔干尼德造山带的北缘巴尔干褶皱冲断带，从塞尔维亚东北部延伸至黑海地区。但是，Variscan造山带的残余物仍保留在其西部和中部。在中部（Stara Planina中央山脉）中部，两个变质程度相反的二叠纪前变质复合体，即低品位的Stara Planina和高品位的Sredna Gora复合物，沿主要的瓦里斯坎构造区并列，并被大量的花岗岩类侵入。以前未知的年龄。在这里，我们介绍了广泛的构造和U-Pb（TIMS和LA-ICP-MS）地质年代学分析，限制了该地区阿尔卑斯山前演化中的一些岩浆和构造事件。这是第一次寒武纪岩浆活动（531.7±1.5 Ma / 519。据报道，花岗岩侵入低品位的Stara Planina复合岩。在314 Ma之前将变质复合物并置，随后是313至306 Ma之间的压抑阶段。最后的Variscan穿透性延展性变形与Ambaritsa片状岩体在约306 Ma的持续挤压作用下的最终侵入阶段有关。此外，已在研究区域区分出至少两个瓦里斯坎后岩浆岩浆岩浆脉冲（约306-304 Ma和250 Ma）。后来，高山韧性至脆性变形事件导致了瓦里斯坎大厦的另一次改造。最后的Variscan穿透性延展性变形与Ambaritsa片状岩体在约306 Ma的持续挤压作用下的最终侵入阶段有关。此外，已在研究区域区分出至少两个瓦里斯坎后岩浆岩浆岩浆脉冲（约306-304 Ma和250 Ma）。后来，高山韧性至脆性变形事件导致了瓦里斯坎大厦的另一次改造。最后的Variscan穿透性延展性变形与Ambaritsa片状岩体在约306 Ma的持续挤压作用下的最终侵入阶段有关。此外，已在研究区域区分出至少两个瓦里斯坎后岩浆岩浆岩浆脉冲（约306-304 Ma和250 Ma）。后来，高山韧性至脆性变形事件导致了瓦里斯坎大厦的另一次改造。