Comprehensive geochemical correlation between surface and subsurface hydrocarbon occurrences in the Batman-Mardin-Sirnak area (SE Turkey)

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dc.contributor.authorHosseini, S. Hossein
dc.contributor.authorHorsfield, Brian
dc.contributor.authorWilkes, Heinz
dc.contributor.authorVieth-Hillebrand, Andrea
dc.contributor.authorYalcin, M. Namik
dc.contributor.authorKavak, Orhan
dc.date.accessioned2024-04-24T16:15:25Z
dc.date.available2024-04-24T16:15:25Z
dc.date.issued2018
dc.departmentDicle Üniversitesien_US
dc.description.abstractSoutheast Turkey is the main oil-producing region of the country, located at the northwestern part of the Zagros Basin. In this study, we investigated the geochemical characteristics of both surface and subsurface hydrocarbon occurrences in the Batman-Mardin-Sirnak area in southeast Turkey to determine whether a genetic relationship exists between the two. For this, thirty solid bitumens from twenty-two different veins along with ten heavy oils and thirteen oil seepage samples from nearby oilfields and seeps were studied using diverse geochemical tools. Firstly each of the different hydrocarbon types was considered individually with respect to source organofacies, level of thermal maturity and degree of biodegradation. The results obtained from the source-related parameters demonstrate a marine algal source for all investigated samples. Also, lithology determination based on various diasterane, tricyclic terpane, hopane and homohopane parameters, suggests a carbonate source for all samples, except for the Dadas and Iskar seeps (clastic). Thereafter, considering the influences caused by thermal and biological alteration processes, all heavy oils, less mature solid bitumens as well as the less biodegraded seep oils were selected to be correlated using selected additional parameters. Homohopane distributions reveal that solid bitumens, compared to heavy oils and seeps, are highly enriched in C-31. and depleted in higher homologues possibly due to cracking of high molecular weight homologues to lower ones during and/or after solidification processes. Furthermore, the similarities observed for the relative abundances of six series of aromatic hydrocarbons and their alkylated counterparts substantiate strong genetic affinities within the sample set. Finally, compound-specific stable carbon isotopes of individual components show that solid bitumens are more enriched in C-13 than the heavy oils which is mainly attributed to the preferential removal of light isotopes (C-12) during solidification. Our results strongly confirm that Turkish solid bitumens are genetically related to the nearby heavy oils, thereby providing new information on the petroleum system in this part of the southeast Anatolia.en_US
dc.identifier.doi10.1016/j.marpetgeo.2018.02.035
dc.identifier.endpage112en_US
dc.identifier.issn0264-8172
dc.identifier.issn1873-4073
dc.identifier.scopus2-s2.0-85042925478
dc.identifier.scopusqualityQ1
dc.identifier.startpage95en_US
dc.identifier.urihttps://doi.org/10.1016/j.marpetgeo.2018.02.035
dc.identifier.urihttps://hdl.handle.net/11468/15798
dc.identifier.volume93en_US
dc.identifier.wosWOS:000432640700006
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofMarine and Petroleum Geology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectGeochemical Correlationen_US
dc.subjectSolid Bitumensen_US
dc.subjectHeavy Oilsen_US
dc.subjectSeep Oilsen_US
dc.subjectSoutheast Turkeyen_US
dc.titleComprehensive geochemical correlation between surface and subsurface hydrocarbon occurrences in the Batman-Mardin-Sirnak area (SE Turkey)en_US
dc.titleComprehensive geochemical correlation between surface and subsurface hydrocarbon occurrences in the Batman-Mardin-Sirnak area (SE Turkey)
dc.typeArticleen_US

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