dc.contributor.author | Vincent, Stephen J. | |
dc.contributor.author | Guo, Li | |
dc.contributor.author | Flecker, Rachel | |
dc.contributor.author | BouDagher-Fadel, Marcelle K. | |
dc.contributor.author | Ellam, Robert M. | |
dc.contributor.author | Kandemir, Raif | |
dc.date.accessioned | 2020-12-19T20:17:36Z | |
dc.date.available | 2020-12-19T20:17:36Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Vincent, S.J., Guo, L., Flecker, R., BouDagher-Fadel, M.K., Ellam, R.M. & Kandemir, R. (2018). Age constraints on intra-formational unconformities in Upper Jurassic-Lower Cretaceous carbonates in northeast Turkey; geodynamic and hydrocarbon implications. Marine and Petroleum Geology, 91, 639-657. https://doi.org/10.1016/j.marpetgeo.2018.01.011 | en_US |
dc.identifier.issn | 0264-8172 | |
dc.identifier.uri | https://doi.org/10.1016/j.marpetgeo.2018.01.011 | |
dc.identifier.uri | https://hdl.handle.net/11436/4414 | |
dc.description.abstract | Upper Jurassic-lowermost Cretaceous carbonate build-ups are imaged on seismic data in the Black Sea. They form important, untested, hydrocarbon reservoirs that are the focus of active exploration. Outcrop analogues to these build-ups around the Black Sea contain a series of subaerial exposure surfaces. The hiatuses associated with a number of these subaerial exposure surfaces have been dated in a well exposed Callovian or Upper Oxfordian to Barremian shallow-water inner platform carbonate succession (the Berdiga Formation) in the Eastern Pontides using strontium isotope stratigraphy and foraminiferal biostratigraphy. They span the latest Kimmeridgian to Tithonian or Berriasian, and the Hauterivian to Barremian. Less well constrained, but broadly contemporaneous stratigraphic gaps in multiple successions around the Black Sea provide additional insights and point to a regional driving mechanism. The timing of hiatus formation does not correspond to periods of eustatic lowstand. It does coincide, however, with Late Tithonian to Berriasian and Hauterivian to Early Aptian episodes of rifting in the Greater Caucasus Basin, located farther to the north. Thus, it is possible that subaerial exposure was caused by rift flank uplift during periods of regional extension. Uplift due to slab break off is discounted as a control because it post-dates (rather than pre-dates) locally developed Kimmeridgian magmatism. Rift-flank uplift is likely to have also affected carbonate build-ups on the intervening rift shoulders of the eastern Black Sea, the Shatskiy Ridge and the Mid Black Sea High. At outcrop, subaerial exposure is often associated with karstification and secondary porosity development. Similar processes may have occurred in the offshore helping to enhance the reservoir quality of these exploration targets. © 2018 Elsevier Ltd | en_US |
dc.description.sponsorship | Rhodes University | en_US |
dc.description.sponsorship | This paper is dedicated to the memory of the late A. Sami Derman without whom the fieldwork associated with this research would not have been possible. We thank Anne Kelly for her Sr sample preparation, Sarah Sherlock for her Ar-Ar analysis, Fiona Hyden for her siliciclastic petrographic analysis, Marcin Krajewski for useful discussions and John McArthur for permission to use the GTS2012 strontium sea level curve. We also acknowledge the insightful comments of Aral Okay, Anton Kuznetsov and Giovanni Rusciadelli that helped improve the manuscript. The research was funded by CASP 's consortium of hydrocarbon exploration companies. RME acknowledges a Hugh Kelly Research Fellowship from Rhodes University, South Africa . The paper is Cambridge Earth Science contribution esc.4078. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Berdiga Formation | en_US |
dc.subject | Black Sea | en_US |
dc.subject | Pontides | en_US |
dc.subject | Reservoir potential | en_US |
dc.subject | Strontium isotope stratigraphy | en_US |
dc.title | Age constraints on intra-formational unconformities in Upper Jurassic-Lower Cretaceous carbonates in northeast Turkey; geodynamic and hydrocarbon implications | en_US |
dc.type | article | en_US |
dc.contributor.department | RTEÜ, Mühendislik ve Mimarlık Fakültesi, Jeoloji Mühendisliği Bölümü | en_US |
dc.contributor.institutionauthor | Kandemir, Raif | |
dc.identifier.doi | 10.1016/j.marpetgeo.2018.01.011 | |
dc.identifier.volume | 91 | en_US |
dc.identifier.startpage | 639 | en_US |
dc.identifier.endpage | 657 | en_US |
dc.relation.journal | Marine and Petroleum Geology | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |