The Kruschevo granodiorite is associated with the Hercynian orogeny 289 million years ago representing biotite granite that was impacted by intense metamorphism. The granite here tends to be cataclastic while biotite has largely been transformed into secondary minerals. The Kraistide area in the east has some additional intrusions, including laminated granites and rose-colored granites, together with aplite and quartz porphyry.