Magma generation in an alternating transtensional-transpressional regime, the Kraków-Lubliniec Fault Zone, Poland

►Complex melting process in transcontinental strike-slip tectonic zone. ►Mantle metasomatism occurring due crustal thickening during transpression followed by delamination and melting. ►KLFZ (Kraków-Lubliniec Fault Zone) - not typical examples of late Carbonifereous-Permian magmatism.