Messinian event in the black sea

Hsü, Kenneth J.; Giovanoli, Federico

doi:10.1016/0031-0182(79)90075-0

Cited by 96 publications

(79 citation statements)

References 9 publications

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“…The well-studied sea level drop of the Messinian Salinity Crisis in the Mediterranean (MSC, 5.96-5.33Ma in the work by Krijgsman et al [1999]) is recorded in the Black Sea by large scale shelf erosion and massive progradation during the subsequent lower Pliocene highstand [e.g., Hsü and Giovanoli, 1979;Gillet et al, 2007]. The initial exposure of the shelf margin triggered instability and failure of the outer shelf and slope, generating gravitational gliding and mass transport of sediments toward the deep-sea part of the basin [Dinu et al, 2005;Ţambrea, 2007].…”

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

confidence: 99%

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

confidence: 99%

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

Munteanu

Maţenco²,

Dinu

et al. 2011

Tectonics

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“…This unit, which includes coarse clastic pebbly breccia and stromatolitic dolomite, is considered as deposited in a very shallow water environment (Stoffers and Müller, 1979) suggesting that the sea-level of the Black Sea was very shallow at that time. In the wake of the previous Mediterranean discovery, Hsü and Giovanoli (1979) have interpreted these data as evidence of a drop in level of the Black Sea of up to 1600 m below the global sea-level in response to the Messinian Salinity Crisis already described in the Mediterranean. Such hypothesis was recently supported by the identification of a Messinian Danube canyon filled by a Zanclean (Lower Pliocene) Gilbert Delta at the outlet of the Iron Gates (western Dacic Basin) .…”

Section: Introductionmentioning

confidence: 99%

Messinian event in the black sea: Evidence of a Messinian erosional surface

2007

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“…Subunit IVd (864.5-883.5 mbsf) is atypical and consists of coarse clastics and stromatolitic dolomite. This pebbly mudstone/breccia layer was originally taken as proof of the desiccation of the Black Sea during the Messinian salinity crisis (MSC; Hsü and Giovanoli, 1979). The main argument was that the presence of the stromatolitic dolomite should represent a supratidal depositional environment and therefore a dramatic sea-level lowering.…”

Section: Original Dsdp Coring and Hole Descriptionmentioning

confidence: 99%

“…Given the age constraint at 850 mbsf, it should be older than 6 Ma and should therefore correlate to the Maeotian and Sarmatian regional stages of the Black Sea (Kojumdgieva, 1983). Typically, Unit IVd is interpreted as a major discontinuity (Hsü and Giovanoli, 1979;Tari et al, 2015), and therefore correlation of magnetic polarities in the interval below requires additional age constraints. We do not have these, but simply extrapolating the sedimentation rate of the overlying interval downwards does suggest a correlation can be made down to the base of unit IVe.…”

Section: Hole 380/380amentioning

confidence: 99%

“…Holes 380/380A and 381 were both on purpose drilled in the southwestern part of the Black Sea, near the Bosporus (Figure 1), hoping that erosion would allow to drill older sediments compared to Hole 379. It is very unfortunate that, based on the interpretation of a single erosional feature represented by unit IVd (380/380A) and unit 6 (381), it has been suggested that the Black Sea experienced a complete desiccation during the Messinian salinity crisis (MSC; Hsü and Giovanoli, 1979). This hypothesis was later substantiated by lowresolution seismic studies indicating a single Messinian erosional surface (MES) links the two holes (Gillet et al, 2007).…”

Section: Mass Transport Complexes At Hole 380/380amentioning

confidence: 99%

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A Greigite-Based Magnetostratigraphic Time Frame for the Late Miocene to Recent DSDP Leg 42B Cores from the Black Sea

et al. 2016

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Throughout the Late Neogene, the Black Sea experienced large paleoenvironmental changes, switching between (anoxic) marine conditions when connected to the Mediterranean Sea and (oxic) freshwater conditions at times of isolation. We create a magnetostratigraphic time frame for three sites drilled during Deep Sea Drilling Project (DSDP) Leg 42B to the Black Sea (drilled in 1975). At the time, magnetostratigraphic dating was impossible because of the presence of the little understood iron sulfide mineral greigite (in sediments a precursor to pyrite) as magnetic carrier. Our rock-magnetic results indicate that only anoxic conditions result in poor magnetic signal, likely as a result of pyrite formation in the water column rather than in the sediment. The magnetostratigraphic results indicate that Hole 379A, drilled in the basin center, has a continuous sedimentary record dating back to 1.3 Ma. Hole 380/380A is subdivided into three consistent intervals, 0-700 mbsf, 700-860 mbsf, and 860-1075 mbsf. The top unit covers the Pleistocene but the magnetostratigraphy is likely compromised by the presence of mass transport deposits. The middle unit spans between 4.3 and 6.1 Ma and records continuous deposition at ∼10 cm/kyr. The lower unit lacks the independent age constraints to correlate the obtained magnetostratigraphy. Hole 381 is drilled on the Bosporus slope and as a result, hiatuses are common. A correlation to the nearby Hole 380/380A is proposed, but indicates deposits cannot straightforwardly be traced across the slope. Our improved age model does not support the original interpretation based on these cores of a desiccation of the Black Sea during the Messinian salinity crisis.

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Messinian event in the black sea

Cited by 96 publications

References 9 publications

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

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

Messinian event in the black sea: Evidence of a Messinian erosional surface

A Greigite-Based Magnetostratigraphic Time Frame for the Late Miocene to Recent DSDP Leg 42B Cores from the Black Sea

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