Organic facies and maturation of Jurassic/Cretaceous rocks, and possible oil-source rock correlation based on pyrolysis of asphaltenes, Scotian Basin, Canada

Mukhopadhyay, P. K.; Wade, John A.; Kruge, Michael A.

doi:10.1016/0146-6380(95)90010-1

Cited by 245 publications

(76 citation statements)

References 21 publications

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“…Milas-Ekizköy kömür örneklerinin Hİ-T max grafiğindeki (Mukhopadhyay vd., 1995) dağılımı. (Mukhopadhyay et al, 1995).…”

Section: Organi̇k Madde Ti̇pi̇unclassified

Ekizköy (Muğla-Milas) Erken-Orta Miyosen Kömürlerinin Organik Jeokimyası ve Paleoiklim Şartları

Çebi¹

2016

Jeoloji Mühendisliği Dergisi

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ÖZBu çalışmada, Muğla ili Milas ilçesinin güneydoğusunda yer alan Ekizköy sahası kömürlerinin organik jeokimyasal özellikleri, çökelme ortamı ve paleoiklim şartları ortaya konmuştur. Ekizköy kömürlerinin toplam organik karbon (TOK) içeriğinin ortalama % 46.24, Hİ (Hidrojen İndeksi) değerlerinin ortalama 152.88 mgHK/gTOK ve Oksijen İndeksi (Oİ) değerlerinin ise ortalama 76.63 mgCO 2 /gTOK olduğu görülmüştür. Bu değerler turba ortamındaki yarı oksik ortam şartlarını ve ancak gaz türetebilecek organik maddeyi yansıtmaktadır. Hİ-T max, S 2 -TOK sınıflama diyagramlarında organik maddenin Tip II ve Tip III kerojenden oluştuğu görülmüştür. Gaz kromatogramlarında, yüksek ve tek karbon numaralı n-alkanların baskın olduğu ve az miktarda da algal katkının olduğu bir dağılım gözlenmektedir. Seçilen M-4 ve M-8 nolu örnekler için karbon tercih indeksleri sırasıyla CPI 22-30 2.8, 2.4 ve CPI 26-28 3.2, 2.8 olarak hesaplanmıştır. Karasal/sucul hidrokarbon oranları TAR HC (Terrigenous/aquatic ratio) 13 ve 28 olarak hesaplanmış olup, bu değerler yüksek karbon numaralı n-alkanların baskın olduğu karasal organik maddeyi yansıtmaktadır. M-4 ve M-8 örneklerinin alındığı seviyelerde CPI, TAR HC , ACL, Q wood/grass , Q wood/plant ve Q grass/plant oranlarına göre, ağaçsı organik maddenin baskın, iklimin göreceli olarak nemli ve yarı tropik olduğu, ancak M-8 nolu örneğin alındığı periyotta iklimin M-4 nolu örneğin alındığı periyoda nazaran daha nemli olduğu ve daha yüksek su tablasının bulunduğu, buna bağlı olarak da sucul bitki açısından daha zengin olduğu söylenebilir.Anahtar Kelimeler: GC, n-alkan, Paleoiklim, Piroliz. ABSTRACT In this study, organic geochemistry, depositional environments and paleo-climatic conditions of Ekizköy coals located southeast of Muğla (Milas) were investigated. The average values of total organic

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“…Milas-Ekizköy kömür örneklerinin Hİ-T max grafiğindeki (Mukhopadhyay vd., 1995) dağılımı. (Mukhopadhyay et al, 1995).…”

Section: Organi̇k Madde Ti̇pi̇unclassified

Ekizköy (Muğla-Milas) Erken-Orta Miyosen Kömürlerinin Organik Jeokimyası ve Paleoiklim Şartları

Çebi¹

2016

Jeoloji Mühendisliği Dergisi

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“…5a, the kerogen type line based on [32]) and plots of HI vs OI (Fig. 5b, the kerogen type line based on [33]), samples from the three sections plot around the Type II boundary, with most of the YMS samples being in the Type II-III area, the SMG samples along the Type II line, and the SGH samples in the Type I-II area.…”

Section: Rock-eval Pyrolysismentioning

confidence: 99%

Source Rock Potential and Depositional Environment of Upper Permian Oil Shales of the Lucaogou Formation in the Southeastern Junggar Basin, Northwest China

Gao¹,

Wang²,

Peng³

et al. 2016

Oil Shale

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“…In L-2 samples, on the other hand, the HI is between 0 and 653 mg HC/g TOC, the OI is between 6 and 291 mgCO 2 /g TOC. In HI-T max diagram (Mukhopadhyay et al 1995), all of the samples taken from L-1 are distributed in type III area (terrestrial, residue organic matter). The limestone samples in L-2 are observed in type II-III kerogen, which is mostly close to type II, and the shale samples are observed in type III area (Fig.…”

Section: Organic Geochemical Investigationsmentioning

confidence: 99%

Hydrocarbon generation potential of late cretaceous shales and carbonates in Hekimhan basin and genetic relationships with Karadere oil seep (Eastern Anatolia Region, Turkey)

Erik

2018

J Petrol Explor Prod Technol

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In this study, Karadere oil seep (solid bitumen) and Late Cretaceous shales and carbonate levels of the Hekimhan Formation in Hekimhan Basin are compared genetically by means of organic-geochemical data. Investigated shale samples have generally low (< 0.5%) the total organic carbon values (TOC, wt%) and there is no petroleum and gas source-rock potential; however, the amount (0.11-5.92%) and type (type II-III kerogen) of organic matter within limestone are consistent for source-rock potential. On the basis of average T max (433 °C) and 0.53% R 0 values, the investigated samples are at the immature and early mature level for hydrocarbon generation. According to biomarker data, the bitumen is pre-Cretaceous in age, highly reducing conditions, formed in a marine depositional environment at normal salinity, and under the influence of high bacterial activity, and was originate from an immature carbonate source rock. These geochemical data are highly in agreement with the late Cretaceous limestone of the Hekimhan Formation, and these rocks may be considered the source rock of the solid bitumen. However, these organic richness zones formed from non-indigenous organic material, and therefore, it is concluded that this seepage which generates from non-indigenous organic materials cannot be due to the limestone at the evaluated level. On the basis of organic-geochemical evaluations, it has been concluded that, in Hekimhan Basin, some hydrocarbons developed in deeper, more mature intervals of the limestone, and that these were migrated probably only a short distance within the basin and became really surfaced in relation to tension fractures.

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Organic facies and maturation of Jurassic/Cretaceous rocks, and possible oil-source rock correlation based on pyrolysis of asphaltenes, Scotian Basin, Canada

Cited by 245 publications

References 21 publications

Ekizköy (Muğla-Milas) Erken-Orta Miyosen Kömürlerinin Organik Jeokimyası ve Paleoiklim Şartları

Ekizköy (Muğla-Milas) Erken-Orta Miyosen Kömürlerinin Organik Jeokimyası ve Paleoiklim Şartları

Source Rock Potential and Depositional Environment of Upper Permian Oil Shales of the Lucaogou Formation in the Southeastern Junggar Basin, Northwest China

Hydrocarbon generation potential of late cretaceous shales and carbonates in Hekimhan basin and genetic relationships with Karadere oil seep (Eastern Anatolia Region, Turkey)

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