Stratigraphic and structural characteristics of the Romanian Black Sea shelf

Dinu, C.; Wong, Heung‐wah; Tambrea, Dorina; Maţenco, Liviu

doi:10.1016/j.tecto.2005.04.012

Cited by 95 publications

(104 citation statements)

References 18 publications

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“…This induced erosion given by larger exposures of the Mediterranean domain during the Messinian low stand [e.g., Clauzon et al, 1996;Foeken et al, 2003]. These conditions are met in a similar fashion for the orogens in the Paratethys realms such as the SE Carpathians, where a coeval large sea level drop associated with massive sedimentation has been reported for the Black Sea [see Dinu et al, 2005;Gillet et al, 2007]. This MSC middle Pontian sea level drop recorded in the Paratethys domain [e.g., Stoica et al, 2007] has potentially induced a shift of depocenters toward the deeper parts of the Black Sea, which is coeval with enhanced erosion of the orogen and exposed parts of the basins.…”

Section: Collision Mechanicsmentioning

confidence: 90%

From nappe stacking to out‐of‐sequence postcollisional deformations: Cretaceous to Quaternary exhumation history of the SE Carpathians assessed by low‐temperature thermochronology

Merten¹,

Maţenco

Foeken

et al. 2010

Tectonics

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[1] Apatite fission track (AFT) and (U-Th)/He (AHe) thermochronology have been combined to constrain the exhumation history of the SE Carpathians. Cooling ages generally decrease from Cretaceous for the internal basement nappes (AFT ages), to Miocene-Quaternary (AFT and AHe, respectively) for the external sedimentary wedge. The AFT and AHe data show a Paleogene age cluster, which confirms a suspected but never demonstrated tectonic event. The new data furthermore suggest that the SE Carpathians have been affected by a middle Miocene exhumation phase related to continental collision, which occurred at rates of ∼0.8 mm/yr, similar to the one previously inferred for the East Carpathians. The SE Carpathian tectonic evolution, however, is overprinted by two younger exhumation events in the Pliocene-Pleistocene. The first exhumation phase (latest Miocene-early Pliocene) occurred at high exhumation rates (∼1.7 mm/yr) and is interpreted as a tectonic event and/or associated with a sea level drop in the Paratethys basins during the Messinian low stand. The youngest recorded tectonic phase suggests rapid Pleistocene exhumation (∼1.6 mm/yr) and is interpreted to represent crustal-scale shortening different in mechanics from collisional processes. The data suggest that the SE Carpathians did not develop as a typical double-vergent orogenic wedge; instead, exhumation was related to a foreland-vergent sequence of nappe stacking during collision and was subsequently followed by a large out-of-sequence shortening event truncating the already locked collisional boundary.

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Section: Collision Mechanicsmentioning

confidence: 90%

From nappe stacking to out‐of‐sequence postcollisional deformations: Cretaceous to Quaternary exhumation history of the SE Carpathians assessed by low‐temperature thermochronology

Merten¹,

Maţenco

Foeken

et al. 2010

Tectonics

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“…[8] Except the Paleocene-early Eocene moments of renewed extension, the overall Upper Cretaceous-Eocene passive margin sedimentation is characterized by a general progradation, the formation of unconformities, the associated system-tracts being driven by sea level variations [Dinu et al, 2005]. This passive margin evolution is ultimately interrupted by the late (middle) Eocene collision recorded southwards between the major tectonic units of the Pontides and the Taurides, smaller continental fragments being accreted in between (Sakarya, Kirsehir [Şengör and Yilmaz, 1981;Okay et al, 1994]).…”

Section: Constraints On the Opening And Inversion Of The Western Blacmentioning

confidence: 99%

“…The Balkanide thrusting was associated in the offshore with a thick late Eocene foredeep that was filled with more than 4 km of sediments in the area of the Kamchya Depression (Figure 1) [Sinclair et al, 1997]. Tectono-stratigraphic chart of the western Black Sea part situated in the offshore Romania (compiled from Băleanu et al [1995], Dinu et al [2002], Ionescu [2002], Dinu et al [2005], and Ţambrea [2007]). The Miocene-Pliocene biostratigraphic ages are a combination between the endemic Central and Eastern Paratethys stages used by the local petroleum exploration (see Rögl [1996] for further biostratigraphic correlations).…”

Section: Constraints On the Opening And Inversion Of The Western Blacmentioning

confidence: 99%

“…Following its Cretaceous -early Eocene opening, large-scale compressional episodes are recorded all around its western basin starting with the late middle Eocene collision recorded between the Istanbul and Sakarya blocks [e.g., Görür, 1988;Robinson et al, 1996;Stephenson et al, 2004]. So far, a regional integration of the compressional thick-skinned structures observed on the Pontides margin [e.g., Okay et al, 2001;Sunal and Tüysüz, 2002], in the Balkanides thrusting [Doglioni et al, 1996], along the Odessa Shelf/Crimean margin [e.g., Stovba et al, 2009] and along the Romanian -northern Bulgarian offshore [Dinu et al, 2005;Tari et al, 2009] is lacking. The latter area displays a significant number of late Eocene -Oligocene structural highs [e.g., Moroşanu, 1996], whose unclear genesis has not been yet connected with the coeval inversion observed elsewhere.…”

Section: Introductionmentioning

confidence: 99%

“…This regional integration of inversional structures has Figure 1. Tectonic map of the Black Sea and adjacent areas (compiled from Finetti et al [1988], Doglioni et al [1996], Robinson and Kerusov [1997], Mikhailov et al [1999], Dinu et al [2005], Okay et al [2006], Saintot et al [2006], Afanasenkov et al [2007], Khriachtchevskaia et al [2009], and Nikishin et al [2010]). The inset is the location of Figure 8.…”

Section: Introductionmentioning

confidence: 99%

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Kinematics of back‐arc inversion of the Western Black Sea Basin

Munteanu

Maţenco²,

Dinu

et al. 2011

Tectonics

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[1] Back-arc basin evolution is driven by processes active at the main subduction zone typically assuming the transition from an extensional back-arc, during the retreat of a mature slab, to a contractional basin, during high-strain collisional processes. Such a transition is observed in the Black Sea, where the accurate quantification of shortening effects is hampered by the kinematically unclear geometries of Cenozoic inversion. By means of seismic profiles interpretation, quantified deformation features and associated syn-tectonic geometries on the Romanian offshore, this study demonstrates that uplifted areas, observed by exploration studies, form a coherent thick-skinned thrust system with N-ward vergence. Thrusting inverted an existing geometry made up by successive grabens that were inherited from the Cretaceous extensional evolution. The shortening started during late Eocene times and gradually affected all areas of the Western Black Sea Basin during Oligocene and Miocene times, deformation being coherently correlated across its western margin. The mechanism of this generalized inversion is the transmission of stresses during the collision recorded in the Pontides-Balkanides system. Syn-tectonic sedimentation in the Western Black Sea demonstrates that this process was continuous and took place through the onset of gradual shortening migrating northward. Although the total amount of shortening is roughly constant in an E-W direction, individual thrusts have variable offsets, deformation being transferred between structures located at distance across the strike of the system. The Black Sea example demonstrates that the vergence and offset of thrusts can change rapidly along the strike of such a compressional back-arc system. This generates apparently contrasting geometries that accommodate the same orogenic shortening.

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