Age constraints on intra-formational unconformities in Upper Jurassic-Lower Cretaceous carbonates in northeast Turkey; geodynamic and hydrocarbon implications

Vincent, Stephen J.; Guo, Lu; Flecker, Rachel; BouDagher‐Fadel, Marcelle K.; Ellam, Robert M.; Kandemir, Raif

doi:10.1016/j.marpetgeo.2018.01.011

Cited by 32 publications

(32 citation statements)

References 53 publications

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“…This age of rifting, based on fault study, is close to some ages proposed based on stratigraphic studies (e.g. Finetti et al, 1988;Görür, 1988;Görür et al, 1993;Okay et al, 1994;Robinson et al, 1995;Nikishin et al, 2008;Vincent et al, 2016;2018).…”

Section: -Conclusionsupporting

confidence: 88%

“…This angular unconformity indicates Late Albian tectonic uplift and erosion that results either from rift flank thermal uplift as suggested for a thick lithosphere (Robinson et al, 1995;Spadini et al, 1996;Cloetingh et al, 2003), or from continental collision, as suggested by Aptian-Albian metamorphic ages in the Central Pontides (Okay et al, 2006, Hippolyte et al, 2017. Note that in the Eastern Pontides, hiatuses of the latest Kimmeridgian to Berriasian and Hauterivian to Barremian were also interpreted as evidences of rift flank uplift during regional extension (Vincent et al, 2018).…”

Section: 3-age Of the Black Sea Riftingmentioning

confidence: 88%

“…Compressional stresses resulted in the structural inversion of large parts of the Black Sea margins mainly during the Eocene and the Oligocene (eg. Kaymakci et al, 2003aKaymakci et al, , 2003bKaymakci et al, , 2009Dinu et al, 2005;Saintot et al, 2006a;Bergerat et al, 2010;Munteanu et al 2011;Espurt et al, 2014;Vincent et al, 2016;2018;Hippolyte et al, 2017). The suture zone of the Neo-Tethys Ocean is marked by an ophiolite belt and subduction-accretion complex, the Izmir-Ankara-Erzincan suture (Fig.…”

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confidence: 99%

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Age and geodynamic evolution of the Black Sea Basin: Tectonic evidences of rifting in Crimea

Hippolyte

Murovskaya

Volfman³

et al. 2018

Marine and Petroleum Geology

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The timing and direction of opening of the Black Sea Basin are debated. However, parts of its margins were inverted during Cenozoic and can be studied onshore. The Crimean Mountains are located in the middle of the northern margin of the basin, and at the onshore prolongation of the mid-Black Sea High. We present the first detailed mapping of large striated normal faults in Crimea. These faults define graben structures that trend parallel to the continental margin. Kinematic analysis of the faults combined with new biostratigraphic data show that the syn-rift sequence is Valanginian to Late Albian in age. It consists of siliciclastic deposits with limestone olistoliths. In contrast, the post-rift Late Cretaceous carbonaceous sequence of Crimea is devoid of normal faults or olistoliths. It unconformably overlies the graben structures. The onset ages, and the trends of extension are quite similar in the northern (Crimea) and the southern (Turkey) inverted margins of the basin. The Early Cretaceous extension directions are normal to the mid-Black Sea High and the Black Sea margins. We conclude that rifting of Black Sea Basin occurred from the Valanginian to the Late Albian (~39 Ma) and drifting during the Late Cretaceous. Based on the directions of rifting, on the lack of evidence of strike slip motions near the mid-Black Sea High, and on published paleomagnetic data, we propose that the Black Sea opened with rotations accommodated by transform faults at its western and eastern margins, as a response to asymmetric slab rollbacks of the Neo-Tethys plate. The inversion of the Crimean margin results from two successive shortening events: Early Eocene NE-SW compression, Eocene to Present SE-NW compression. Their timing support the idea that compressional stresses generated by continental collisions in Turkey were transmitted through the strong Black Sea lithosphere up to Crimea. 1-Introduction: The Black Sea is a 2200 m deep marine basin surrounded by alpine mountains including the Balkanides, the Pontides, the Greater Caucasus and the Crimean Mountains (Fig. 1A). Because of its location, at the rear of the Srednegorie-Pontides-Achara-Trialet magmatic arc, it is classically interpreted as a back arc basin that opened from Cretaceous to Paleocene times within the East European platform, behind the north-dipping Neotethyan subduction zone (e.g. Zonenshain and Le

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Section: -Conclusionsupporting

confidence: 88%

Section: 3-age Of the Black Sea Riftingmentioning

confidence: 88%

mentioning

confidence: 99%

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Age and geodynamic evolution of the Black Sea Basin: Tectonic evidences of rifting in Crimea

Hippolyte

Murovskaya

Volfman³

et al. 2018

Marine and Petroleum Geology

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“…These reefs are regarded as close analogues to the Late Jurassic reefs found in the Shatsky Ridge (Afanasenkov et al 2005;Guo et al 2011). The Ai-Petri Massif is a spectacular example of the Late Kimmeridgian-Tithonian reef complex Olszewska 2006, 2007) resembling the Štramberk-type reefs well known from the Pontides, Moesia, Southern Carpathian, Polish and Czech Outer Carpathian, Southern Crimea and the Northern Caucasus Mts (e.g., Matyszkiewicz and Słomka 2004;Bucur and Săsăran 2005;Ivanova et al 2008;Guo et al 2011;Piskunov et al 2012;Pleş et al 2013;Kaya and Altiner 2015;Kołodziej 2015;Strzeboński et al 2017;Hoffmann et al 2017;Vincent et al 2018). The main part of the Late Jurassic successions from the Crimean Mts.…”

Section: Location and Geological Settingmentioning

confidence: 99%

Crescentiella-microbial-cement microframeworks in the Upper Jurassic reefs of the Crimean Peninsula

Krajewski

Schlagintweit²

2018

Facies

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In the Upper Jurassic reef successions of the Crimean Peninsula (Sudak and Jalta areas), the microencruster Crescentiella morronensis (Crescenti), microbialites, and multiple generations of cements, form microframeworks. They were observed in two stages of the carbonate platform evolution, in the Middle-Upper Oxfordian, and in the Upper Kimmeridgian-Tithonian. Generally, in both stages, the features of the microframeworks are similar and consist of densely packed Crescentiella associated with microbialites and branched colonies of the sclerosponge Neuropora lusitanica Termier. The difference between the occurrences of the two stages is the variable amount of nubecularid foraminifera and enigmatic tube-shaped structures forming the central cavities of Crescentiella. The Crescentiella-microbial-cement microframeworks formed under phreatic conditions in the upper slope and seaward marginal depositional settings where intensive synsedimentary cementation took place. They formed in the initial stages of long cycles of restoration and blooming of the reefs. The late Jurassic examples resemble the Permian algae-microbial-cement reefs as well as the Triassic Tubiphytes and cement crust-dominated reefs. Concurrently, all these examples formed a transitional facies zone between typical slope facies to shallow subtidal platform margin facies characterized by high taxonomic diversity of calcified sponges, corals, and microencrusters forming the principal part of the reefs.

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“…The Black Sea opened as an oceanic back‐arc basin during the Santonian, and led to the separation of the Pontides from Eurasia (e.g., Nikishin et al, ). The episodes of documented subduction were separated by periods of quiescence; most notably in the Late Jurassic–Early Cretaceous (157–130 Ma) when carbonates were deposited throughout the Black Sea region with no evidence of active subduction (e.g., Vincent et al, ). Oceanic subduction under the Pontides ended in the latest Cretaceous to Paleocene when the Pontides collided with the Anatolide‐Tauride Block leading to the north‐vergent deformation of the Pontide margin.…”

Section: Tectonic Setting and Stratigraphy Of The Ankara Regionmentioning

confidence: 99%

Major Late Cretaceous Mass Flows in Central Turkey Recording the Disruption of the Mesozoic Continental Margin

2019

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The newly recognized Upper Cretaceous (~87 Ma) olistostrome belt in central Turkey west of Ankara extends for more than 112 km subparallel to the Izmir-Ankara suture with a width of 10 km. The Alacaatlı Olistostromes are stratigraphically underlain by a Triassic basement, and are up to 2 km thick. Over 80% of the blocks in the olistostromes consist of pelagic limestones, which reach up to 300 m in size; other blocks include basalt, chert, serpentinite, tuff, and sandstone. The limestone blocks are Jurassic and Cretaceous in age with micropaleontology documenting the presence of Callovian-Oxfordian, Tithonian, Berriasian, Aptian, Albian, Cenomanian, and Turonian stages. The flows are separated by intrabasinal sediments of shale, siltstone, and volcaniclastic sandstone with Albian (108-101 Ma) detrital zircons. The olistostromes show minor tectonic deformation, and are unconformably overlain by Santonian pelagic limestones. The deposition of the Alacaatlı Olistostromes was followed by arc magmatism, which started in the Campanian (~78 Ma) after a period of shortening and uplift, and the region became a fore-arc basin with deposition of shale and volcaniclastic sandstone with Campanian (78-72 Ma) detrital zircons. A number of peculiar features of these olistostromes including rapid uplift and erosion before the creation of a deep, short-lived (89-86 Ma) ephemeral basin, dominance of deep marine limestone blocks, and inception of arc magmatism approximately 9 Myr after their deposition indicate a major tectonic event involving the disruption of the continental margin prior to the onset of arc magmatism. This event is interpreted as a change from transform margin to subduction.

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Age constraints on intra-formational unconformities in Upper Jurassic-Lower Cretaceous carbonates in northeast Turkey; geodynamic and hydrocarbon implications

Cited by 32 publications

References 53 publications

Age and geodynamic evolution of the Black Sea Basin: Tectonic evidences of rifting in Crimea

Age and geodynamic evolution of the Black Sea Basin: Tectonic evidences of rifting in Crimea

Crescentiella-microbial-cement microframeworks in the Upper Jurassic reefs of the Crimean Peninsula

Major Late Cretaceous Mass Flows in Central Turkey Recording the Disruption of the Mesozoic Continental Margin

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