The cross-plot of hydrogen index versus Rock-Eval temperature Tmax classified the kerogen type and thermal maturity in the southern, central and northern segments of the Carpathian Foredeep.

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... the north ern segment sam ples, a GP of only 0.55 mg HC/g rock was cal cu lated. The av er age HI reaches 182 mg HC/g TOC in the south ern seg ment, 174 mg HC/g TOC in the cen tral seg ment and only 54 mg HC/g TOC in the north ern seg ment (Ta ble 1). The av erage T max is sim i lar in the cen tral and north ern seg ment sam ples (432 and 431°C, Fig. 3) and slightly lower in the sam ples from the south ern seg ment ...

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... on the av er age T max and PI of Rock-Eval py rol y sis (432°C and 0.15, re spec tively), the strata of the cen tral segment are en ter ing the oil win dow (Figs. 3 and 6). The T max and PI within both the north ern seg ment (431°C and 0.06, re spectively) and the south ern seg ment (426°C and 0.06, re spectively) in di cate that de pos its are ther mally im ma ture or at the initial stage of gen er a tion of the hy dro car bons, which is also supported by low reflectance val ues in the range 0.27-0.58% ...

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... kerogen type is com monly inicated by the di a gram of HI ver sus tem per a ture T max . This cross-plot in di cates pre vail ing kerogen types II and III within both the south ern (HI up to 434 mg HC/g TOC) and cen tral seg ments (HI up to 506 mg HC/g TOC; Fig. 3). Sig nif i cantly, lower HI val ues, of 54 mg HC/g TOC on aver age, which are typ i cal of kerogen type III, were ob served within the north ern seg ment sam ples (Ap pen dix 1). How ever, the kerogen type in ter pre ta tions based on the Rock-Eval data may be in flu enced by low TOC (<0.5-1.0 wt.%) in the sam ples causing the un der ...

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... ever, liptinite macerals com posed mainly of spores and pol len were ob served in larger amounts within the Mio cene strata in the Gottwaldov-1 and -2 bore holes (cen tral seg ment, Ta ble 2). This ob ser va tion is in agree ment with the higher HI val ues (Fig. 3). The in crease in HI is caused by a rel a tively higher con tent of liptinite macerals, which is in ter preted as re flect ing the pres ence of dis tal ma rine fa cies within the Carpathian Foredeep. Sig nif icant vari a tions in depositional en vi ron ments are doc u mented in the suc ces sions from which sam ples rep re sent ing the ...

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... the north ern segment sam ples, a GP of only 0.55 mg HC/g rock was cal cu lated. The av er age HI reaches 182 mg HC/g TOC in the south ern seg ment, 174 mg HC/g TOC in the cen tral seg ment and only 54 mg HC/g TOC in the north ern seg ment (Ta ble 1). The av erage T max is sim i lar in the cen tral and north ern seg ment sam ples (432 and 431°C, Fig. 3) and slightly lower in the sam ples from the south ern seg ment ...

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... on the av er age T max and PI of Rock-Eval py rol y sis (432°C and 0.15, re spec tively), the strata of the cen tral segment are en ter ing the oil win dow (Figs. 3 and 6). The T max and PI within both the north ern seg ment (431°C and 0.06, re spectively) and the south ern seg ment (426°C and 0.06, re spectively) in di cate that de pos its are ther mally im ma ture or at the initial stage of gen er a tion of the hy dro car bons, which is also supported by low reflectance val ues in the range 0.27-0.58% ...

Context 7

... kerogen type is com monly inicated by the di a gram of HI ver sus tem per a ture T max . This cross-plot in di cates pre vail ing kerogen types II and III within both the south ern (HI up to 434 mg HC/g TOC) and cen tral seg ments (HI up to 506 mg HC/g TOC; Fig. 3). Sig nif i cantly, lower HI val ues, of 54 mg HC/g TOC on aver age, which are typ i cal of kerogen type III, were ob served within the north ern seg ment sam ples (Ap pen dix 1). How ever, the kerogen type in ter pre ta tions based on the Rock-Eval data may be in flu enced by low TOC (<0.5-1.0 wt.%) in the sam ples causing the un der ...

Context 8

... ever, liptinite macerals com posed mainly of spores and pol len were ob served in larger amounts within the Mio cene strata in the Gottwaldov-1 and -2 bore holes (cen tral seg ment, Ta ble 2). This ob ser va tion is in agree ment with the higher HI val ues (Fig. 3). The in crease in HI is caused by a rel a tively higher con tent of liptinite macerals, which is in ter preted as re flect ing the pres ence of dis tal ma rine fa cies within the Carpathian Foredeep. Sig nif icant vari a tions in depositional en vi ron ments are doc u mented in the suc ces sions from which sam ples rep re sent ing the ...