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., 2017. Ge netic cor re la tion of source rocks and nat u ral gas in the Pol ish Outer Carpathians and Paleozoic-Mesozoic base ment east of Kraków (south ern Po land). Geo log i cal Quarterly, 61 (4): 795-824, doi: 10.7306/gq.1367 Nat u ral gas-source rock cor re la tions in the Pol ish Outer Carpathians and Paleozoic-Mesozoic base ment in the Kraków-Brzesko-Nowy S¹cz area (south ern Po land) have been es tab lished. In the Dukla and Sub-Silesian units, mixed kerogen Type-II/III or III/II oc curs. The or ganic mat ter is im ma ture or low-ma ture. The Oligocene Menilite beds of the Silesian Unit are rich in TOC and con tain gas-prone Type III kerogen of low ma tu rity. In the Paleozoic-Mesozoic base ment, the TOC con tent and re sid ual hy dro car bon po ten tial vary in the Mid dle and Up per De vo nian strata, Mis sis sip pian car bon ate and clastic fa cies and Mid dle Ju ras sic strata. The Pa leo zoic strata are ca pa ble of thermogenic hy dro car bon gen er a tion, while organic mat ter in the Mid dle Ju ras sic rocks is gen er ally im ma ture. Gas eous hy dro car bons ac cu mu lated both in the Silesian and Dukla units of the Pol ish Outer Carpathians and in the Me so zoic base ment are ge net i cally re lated to thermogenic and mi cro bial pro cesses. The Outer Carpathian nat u ral gas was gen er ated mainly from the Type-II/III kerogen of the Oligocene Menilite beds. The thermogenic gases from the Me so zoic base ment were gen er ated from De vo nian and Mis sis sip pian (carbon ate) Type-II and mixed II/III kerogens and prob a bly from Si lu rian/Or do vi cian Type-II kerogen and Mid dle Ju ras sic Type-III/II kerogen oc cur ring at more than 7 km depth. Mi cro bial meth ane mi grated into the Outer Carpathian flysch suc cession from the Mio cene strata of the Carpathian Foredeep.Key words: Pol ish Outer Carpathians, Pa leo zoic-Mesozoic base ment, source rock po ten tial, nat u ral gas, biomarkers, sta ble car bon, hy dro gen and ni tro gen iso topes.

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