Organic geochemistry of the Lower Cretaceous black shales and oil seep in the Sinop Basin, Northern Turkey: An oil–source rock correlation study

Multiple Exhumation Phases in the Central Pontides (N Turkey): New Temporal Constraints on Major Geodynamic Changes Associated With the Closure of the Neo‐Tethys Ocean

“…Finally, a constraint box marking the onset of basin inversion was imposed between 60 and 30 Ma (Figure ; Espurt et al, ; Hippolyte et al, , ; Okay et al, , ). The modeling was then implemented according to vitrinite reflectance and organic geochemistry (e.g., rock‐eval pyrolysis, total organic carbon, and n‐alkane distribution) data from the Lower Cretaceous turbidites of the Çağlayan Formation (Derman & İztan, ; Görür & Tüysüz, ; Korkmaz et al, ). Although sparse, these data document an overall westward increase of peak temperatures at the base of the Çağlayan Formation from ~100 °C in the eastern sectors of the study area (HAN and KOZ samples; Figure ) to temperatures of ~160 °C in central sectors (RTZ and SEL samples; Figure ).…”

Geochemistry of Upper Miocene–Lower Pliocene source rocks in the Hellenic Fold and Thrust Belt, Zakynthos Island, Ionian Sea, western Greece

“…Rock-Eval pyrolysis is the most widely used method for screening the petroleum generative potential and thermal maturity of sedimentary rocks (Espitali e et al, 1986;Peters, 1986;B ehar et al, 2001). Recently published works have employed pyrolysis methods to provide insight on the hydrocarbon prospectivity in sedimentary basins (Abubakar et al, 2008;Maravelis and Zelilidis, 2010;Alizadeh et al, 2012;Korkmaz et al, 2013;Opera et al, 2013;Pantopoulos and Zelilidis, 2014).…”

Mineral composition and organic geochemistry of the Lower Cretaceous Xiagou Formation source rock from the Qingxi Sag, Jiuquan Basin, Northwest China

“…4 Cross diagrams of T max versus HI (a) and TOC versus S 2 (b) for the Xiagou Formation source rocks. a The organic matter-type boundary line according to Sadettin Korkmaz et al (2013); b source rock quality boundary representing oil-and gas-prone attribute after Hakimi et al (2010); border between Type II/III organic matter (300 mg HC/g TOC) after Langford and Blanc-Valleron (1990), border between Type I/II organic matter (700 mg HC/g TOC) after Espitalié et al (1985) K 1 g 1 , and K 1 g 0 source rocks vary from 0.31% to 3.33% (average: 1.23%), 0.51% to 3.1% (average: 1.32%), 0.17% to 6.89% (average: 1.56%), and 0.85% to 11.53% (average: 2.36%), respectively, and the S 1 + S 2 values vary from 0.11 to 27.4 mg HC/g rock (average: 5.42 mg HC/g rock), 0.6 to 25.2 mg HC/g rock (average: 5.2 mg HC/g rock), 0.07 to 36.1 mg HC/g rock (average: 6.51 mg HC/g rock), and 1.97 to 16.1 mg HC/g rock (average: 7.08 mg HC/g rock), respectively (Tables 2, 3). As shown in Fig.…”

“…The S 2 and HI parameters of Rock-Eval pyrolysis are often used to evaluate the organic matter type of source rock (Espitalié et al 1985;Langford and BlancValleron 1990;Hakimi et al 2010;Korkmaz et al 2013). In the study area, the S 2 values range from 0.01 to 32.5 mg HC/g rock (average: 5.36 mg HC/g rock), and the HI has a wide scope between 1.4 and 1680 mg HC/g TOC (average: 329 mg HC/g TOC) (Table 3; Fig.…”