The eastern part of the European Variscan belt is exposed in the Bohemian Massif (BM). During the Variscan Orogeny, the Saxothuringian and Moldanubian BM units collided with the Brunovistulicum microcontinent. The western part of the Brunovistulicum is composed of Neoproterozoic crystalline rocks, occurring in four units: the Thaya Dome, the Svratka Dome, the Silesian Domain, and the Strzelin Massif, the northernmost exposed part of the Brunovistulicum. Another newly recognized Brunovistulicum subunit is the Drosendorf Unit in Austria. During the Variscan orogeny, the rocks of these units have been reworked to variable degree. The article presents new SHRIMP U–Pb ages which were obtained for three samples: N24—the sillimanite-bearing Nowolesie gneiss, affected by migmatization I; SK 1P—a pegmatite produced during migmatization II, and SK3—a dyke cross-cutting migmatized gneisses. These new data supplement already published zircon ages of the Neoproterozoic gneisses and the Variscan granitoids. Based on these data, this article documents the thermal-tectonic history of the Strzelin Massif during the 600–280 Ma timespan. The Neoproterozoic (Ediacaran) stage lasted about 30 Ma (600–570 Ma). There is no evidence for those thermal events which might have occurred between the Late Neoproterozoic and the Mid Devonian. The Variscan thermal history occurred from 350 to 280 Ma. Metamorphic changes started after the collision of the Bohemian Massif and the Brunovistulicum. The main thermal events are documented by two stages of migmatization, at 335 Ma and 305 Ma, respectively, and three stages of granitoid magmatism: ca. 324 Ma, ca. 306–303 Ma, and ca. 295–283 Ma. Compared with other structural units of the western part of the Brunovistulicum, the major peculiarities of the geology of the Strzelin Massif are: (1) klippen of the Saxothuringian rocks on top of rocks of the Brunovistulicum; (2) medium and low pressure metamorphism; (3) two stages of migmatization; (4) presence of a thermal dome; (5) long-lasting granite magmatism; (6) repeated intrusions of small volume, geochemically diverse magmas, controlled by faults and cracks.

欧洲 Variscan 带的东部出露在波西米亚地块 (BM) 中。在 Variscan 造山运动期间，Saxothuringian 和 Moldanubian BM 单元与 Brunovistulicum 微大陆相撞。Brunovistulicum 的西部由新元古代结晶岩组成，分布在四个单元中：Thaya Dome、Svratka Dome、Silesian Domain 和 Brunovistulicum 最北端出露的 Strzelin 地块。另一个新发现的Brunovistulicum 亚基是奥地利的Drosendorf 亚基。在 Variscan 造山运动期间，这些单元的岩石已进行了不同程度的改造。本文介绍了三个样品获得的新 SHRIMP U-Pb 年龄：N24——含硅线石的 Nowolesie 片麻岩，受混杂作用 I 影响；SK 1P——在混杂作用 II 中产生的伟晶岩，和 SK3——一个堤坝横切混合片麻岩。这些新的数据补充已经公布了新元古代片麻岩和华力士花岗岩的锆石年龄。基于这些数据，本文记录了 600-280 Ma 时间跨度内 Strzelin 地块的热构造历史。新元古代（Ediacaran）阶段持续了大约 30 Ma（600-570 Ma）。没有证据表明可能发生在晚新元古代和中泥盆世之间的那些热事件。Variscan 热历史发生在 350 到 280 Ma。波西米亚地块和布鲁诺维斯图里库姆碰撞后开始发生变质变化。主要的热事件记录了两个阶段的混合作用，分别在 335 Ma 和 305 Ma，以及三个阶段的花岗岩岩浆作用：大约 约 324 马 306–303 Ma，约 295–283 马。与Brunovistulicum西部其他构造单元相比，Strzelin地块的主要地质特征是：（1）Brunovistulicum岩石之上的Saxothuringian岩石的klippen；(2)中低压变质作用；(3)迁移的两个阶段；(4) 存在热穹顶；(5) 持久的花岗岩岩浆作用；(6) 受断层和裂缝控制的小体积、地球化学性质多样的岩浆的反复侵入。