Dinoflagellate cyst biostratigraphy of the upper Eocene and lower Oligocene of the Kirmizitepe Section, Azerbaijan, South Caspian Basin

Bati, Zuhtu

doi:10.1016/j.revpalbo.2015.03.002

Cited by 11 publications

(12 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even though this species was identified in the Late Eocene in Browns Creek Clays, SW Victoria, Australia (Cookson and Eisenack, 1965), its last occurrence defines the upper boundary of the Gse zone (Brinkhuis and Biffi, 1993;Brinkhuis, 1994;Wilpshaar et al, 1996;Torricelli and Biffi, 2001) within the early Rupelian ( Figure 7). It was also reported in earliest Rupelian sediments in the Caspian Region (Batı, 2015). However, H. semilunifera was only identified in the Sazlıbosna section (Sample 5) in the late Priabonian interval in this study (Figure 8).…”

Section: Assemblage Zonesupporting

confidence: 58%

Late Eocene to Early Oligocene palynostratigraphy of the Western Black Sea, Eastern Paratethys

Sancay¹,

Bati²

2020

Turkish J Earth Sci

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Assemblage Zonesupporting

confidence: 58%

Late Eocene to Early Oligocene palynostratigraphy of the Western Black Sea, Eastern Paratethys

Sancay¹,

Bati²

2020

Turkish J Earth Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…Glaphyrocysta cf. semitecta is an important age diagnostic dinocyst for the LMF in the studied well sections having a stratigraphic distribution covering NP21 and NP22 zones of the Early Oligocene in the Mediterranean and Northern Europe (Wilpshaar et al, 1996;Torricelli and Biffi, 2001;Williams et al, 2004;Van Simaeys et al, 2005;Pross et al, 2010;Bati, 2015). For the UMF, Wetzeliella gochtii is a very important biostratigraphic tool having a particular importance for the regional correlations and being one of the stratigraphic markers for the Oligocene, where its first occurrence (FO) is commonly used to recognize the Early Oligocene.…”

Section: Subdivision Of the Mezardere Formation Based On Dinocyst Biomentioning

confidence: 99%

“…For the UMF, Wetzeliella gochtii is a very important biostratigraphic tool having a particular importance for the regional correlations and being one of the stratigraphic markers for the Oligocene, where its first occurrence (FO) is commonly used to recognize the Early Oligocene. There are many studies reporting the Early Oligocene FO of this taxon (e.g., Costa and Downie, 1976;Liengjarern et al, 1980;Köthe, 1990;Powell, 1992;Brinkhuis and Biffi, 1993;Bati et al, 1993;Williams et al, 2004;Gradstein et al, 2004;Gedl, 2004;Eldrett et al, 2004;Dybkaer, 2004;Van Simaeys et al, 2005;Sancay, 2005;Sancay et al, 2006aSancay et al, , 2006bKöthe and Piesker, 2007;Bati and Sancay, 2007;Bati et al, 2007;Pross et al, 2010;Barski and Bojanowski, 2010;Soliman, 2012;Bechtel et al, 2013Bechtel et al, , 2014Bati, 2015;Sachsenhofer et al, 2017). However, Pross (2001) and Sluijs et al (2005) suggested that the last occurrence (LO) of Wetzellioid dinoflagellate cysts including Wetzeliella symmetrica and Wetzeliella gochtii reflects strong diachronism in that younger LOs occurred in the northwest European Tertiary Basin.…”

Section: Subdivision Of the Mezardere Formation Based On Dinocyst Biomentioning

confidence: 99%

“…The last decade of the second millennium was the period during which several biostratigraphic studies based on dinocysts were carried out to establish well-calibrated dinoflagellate cyst zonal schemes in different regions of the Mediterranean and Eastern Europe (Bati, 2015 and references therein). As one of the pioneering works, Brinkhuis and Biffi (1993) defined eight dinoflagellate cyst zones (Melitasphaeridium pseudorecurvatum (Mps), Schematophora speciosa (Ssp), and Cordosphaeridium funiculatum (Cfu) interval zones in the Upper Eocene; Achomosphaera alcicornu (Aal) Interval zone in the Eocene-Oligocene transition; and the Glaphyrocysta semitecta (Gse), Areosphaeridium diktyoplokum (Adi), Reticulatosphaera actinocoronata (Rac), and Corrudinium incompositum (Cin) interval zones in the Lower Oligocene) on the basis of 20 dinocyst events they described.…”

Section: Subdivision Of the Mezardere Formation Based On Dinocyst Biomentioning

confidence: 99%

See 1 more Smart Citation

Palynological and petroleum geochemical assessment of the Lower Oligocene Mezardere Formation, Thrace Basin, NW Turkey

Gürgey¹,

Bati²

2018

Turkish J Earth Sci

Self Cite

View full text Add to dashboard Cite

The Oligocene clastic sequence of the Mezardere Formation (MF) with laterally variable organic richness has long been known as a proven source of gas with minor oil accumulations across the Thrace Basin of northwest Turkey. However, based on well data for the thick MF, neither detailed work in relation to age dating and stratigraphy nor a close linkage between the depositional facies/ environments, organic richness/organic proxies, and cyclicity has been established yet. In the present study, the MF was informally subdivided into Lower MF (LMF) and Upper MF (UMF) based on the distinct differences in palynological and geochemical data. Based on the common occurrences of Glaphyrocysta cf. semitecta and absence of Wetzeliella gochtii, the LMF is considered to be deposited during the earliest Oligocene (?Pshekian) under the prevailing marine conditions. The UMF is characterized by a very rich and diverse dinocyst assemblage having abundant occurrences of age-diagnostic Wetzeliella gochtii and a Solenovian age is assigned. Common Pediastrum occurrences in the UMF may suggest fresh water input as is the case for many source rocks of the Central and Eastern Paratethys. The UMF shows the geochemical characteristics of a typical transgressive sequence such as higher TOC, hydrogen index (HI), and relative hydrocarbon potential (RHP) values than those for the regressive LMF. On the RHP basis, three short-term transgressive to regressive cycles are recognized in the entire MF in the wells studied. The early mature UMF samples showed a fair to good source rock potential (average TOC = 1.14 wt. %; HI = 283 mg oil/g TOC) and low to moderate genetic petroleum potential (GP = 3.65 mg oil/g rock) and source potential index (SPI = 1.44 t oil/m 2). The LMF samples were not evaluated due to their apparently low TOC, HI, and S2 values. Better understanding of the MF will eventually aid a better understanding of the paleoenvironment of the Eastern Paratethys.

show abstract

“…However, samples analysed by Feyzullayev et al, (2001) indicate occasional rich oil-prone source intervals in Maikopian lithostratigraphy with TOC up to 15.1 wt.% and HI up to 612 mg/gC. Dinoflagellate cyst biostratigraphy indicates a Rupelian age for the outcrop interval from which the high TOC samples were obtained (Bati, 2015). Priabonian Koun Formation is also exposed as part of the same outcropping section but has little source rock potential.…”

Section: Bulk Source Rock Properties From Outcrop and Well Datamentioning

confidence: 98%

Diamondoids and Basin Modelling Reveal One of the World's Deepest Petroleum Systems, South Caspian Basin, Azerbaijan

Goodwin

Abdullayev²,

Javadova³

et al. 2020

Journal of Petroleum Geology

View full text Add to dashboard Cite

The South Caspian Basin has been one of the world's most prolific petroleum provinces since the 19th Century. However, despite the large number of discovered petroleum accumulations, the source rock sequence has not been penetrated by the drill in the offshore basin and is therefore poorly defined. In this paper, geochemistry together with broad estimates of in‐place volumes of petroleum fluids, onshore outcrop data and basin modelling have been used to place constraints on the source rock description. Diamondoids, the most thermally stable group of hydrocarbons, have been measured in a suite of liquid petroleum samples from Pliocene fluvio‐deltaic sandstone reservoirs at the Shah Deniz gas‐condensate field and the Azeri‐Chirag‐Gunashli oil field, offshore Azerbaijan. Samples from both fields exhibit elevated concentrations of diamondoids and C29 steranes, indicating a mixture of thermally cracked and non‐cracked petroleum. We use diamondoid concentrations to estimate that 4.8 B brl of oil may have been cracked to 12 Tcf of gas below the Shah Deniz reservoirs. Source rock properties from the outcropping Oligocene – Miocene Maikop and Diatom Formations have been used to model source rock maturation. The results indicate that pre‐cracking volumes of petroleum could be explained reasonably by the presence of source rock intervals in the offshore that are of similar richness but increased thickness compared to measured onshore outcrops. Relatively high diamondoid concentrations in Shah Deniz condensate (up to 160 ppm 3‐ + 4‐methyldiamantanes) are in agreement with gas isotope compositions (δ13C1 – δ13C3) with respect to thermal maturity. Both parameters indicate the presence of source rock that is at a high level of thermal maturity at a vitrinite reflectance equivalent (VRE) of ca. 1.5–2.0% Ro. Given the low geothermal gradients in the South Caspian Basin (16 – 17°C/km at Shah Deniz) and the relatively high temperatures required for maturation due to rapid, relatively recent burial and heating, the source rock must be buried to depths in excess of 13 km in the Shah Deniz drainage area. In the absence of any evidence of a working Mesozoic petroleum system in the South Caspian Basin, this depth of burial highlights the significant thickness of Paleogene sediments in the offshore basin. Of prolific petroleum‐producing basins, only in the deep‐water Gulf of Mexico are actively‐generating source rocks buried to similar depths.

show abstract

Dinoflagellate cyst biostratigraphy of the upper Eocene and lower Oligocene of the Kirmizitepe Section, Azerbaijan, South Caspian Basin

Cited by 11 publications

References 48 publications

Late Eocene to Early Oligocene palynostratigraphy of the Western Black Sea, Eastern Paratethys

Late Eocene to Early Oligocene palynostratigraphy of the Western Black Sea, Eastern Paratethys

Palynological and petroleum geochemical assessment of the Lower Oligocene Mezardere Formation, Thrace Basin, NW Turkey

Diamondoids and Basin Modelling Reveal One of the World's Deepest Petroleum Systems, South Caspian Basin, Azerbaijan

Contact Info

Product

Resources

About