Modeling deformation and salt tectonics in the eastern Mediterranean Ridge accretionary wedge

Costa, E.; Camerlenghi, Angelo; Polonia, Alina; Cooper, Calvin; Fabretti, P.; Mosconi, A.; Murelli, P.; Romanelli, Marco; Sormani, Lorenzo; Wardell, N.

doi:10.1130/b25309.1

Cited by 33 publications

(31 citation statements)

References 55 publications

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“…Montadert et al 1978;Lofi et al 2011a, b). The interval velocities of the Levant Basin MU are even lower (Costa et al 2004;Reiche et al 2014;Feng & Reshef 2016), as the salt is intercalated with clays (Feng & Reshef 2016). Studies based on laboratory experiments (Jones & Davison 2014) report pure halite seismic velocities of 4500 m s -1…”

Section: Deep Basinsmentioning

confidence: 98%

Seismic imaging of Late Miocene (Messinian) evaporites from Western Mediterranean back-arc basins

Cin

Ben

Mocnik

et al. 2016

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An analysis of multichannel seismic reflection data was conducted focusing on the comparison between the Messinian Salinity Crisis (MSC) and Plio-Quaternary (PQ) evolution of the eastern Sardo-Provençal and northern AlgeroBalearic basins and related margins in the West Mediterranean Sea. Both basins were completely opened during the MSC and their well-defined seismic stratigraphy is very similar in the deep parts. The primary difference between these two basins is due to their different pre-MSC extensional history, including the opening age and the stretching factors. These factors influenced the occurrence of post-MSC salt tectonics on these margins.

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Section: Deep Basinsmentioning

confidence: 98%

Seismic imaging of Late Miocene (Messinian) evaporites from Western Mediterranean back-arc basins

Cin

Ben

Mocnik

et al. 2016

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“…Seismic investigations of the Mediterranean Ridge accretionary complex, to the east of our study area, show complex thickness distributions of Messinian evaporites that reflect both original stratigraphic variations and heterogeneous tectonic thickening (Tay et al 2002;Hieke et al 2009). Costa et al (2004) argued that the hummocky 'cobblestone' form of the top Messinian reflector in the Mediterranean Ridge area represents short-wavelength folds. Similar patterns have been described from the Calabrian accretionary complex (Fig.…”

Section: Interpreting Messinian Strata and Deformation In The Ionian Seamentioning

confidence: 99%

“…Hummocky deformation of these sediments (so-called 'cobblestone' morphology;Hersey 1965;Hsü & Cita 1973) characterizes much of the Mediterranean sea floor (Costa et al 2004). Modern seismic data reveal a range of behaviours.…”

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confidence: 99%

“…Furthermore, there is a basic assumption in some modelling of Messinian evaporites that any composition variations are unimportant in controlling deformation (e.g. Costa et al 2004). The lack of substantial well control is partially overcome by interpreting seismic reflector character and linking this to the variations in Messinian evaporites found onshore (e.g.…”

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confidence: 99%

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Stratigraphic variations control deformation patterns in evaporite basins: Messinian examples, onshore and offshore Sicily (Italy)

Butler

Maniscalco

Sturiale

et al. 2014

JGS

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Three-dimensional seismic data are increasingly resolving original compositional heterogeneity and structural complexity in evaporitic successions within sedimentary basins. The relationship between basin structure, evaporite composition and its influence on subsequent deformation are investigated here using Messinian examples from the Maghrebian thrust system of Sicily and applied to the adjacent Ionian sea-bed. By integrating outcrop and onshore subsurface data, we demonstrate variations in evaporite stratigraphies deposited across thrust-top basins, and how these variations have controlled subsequent deformation of these basins. Gypsum and carbonate units develop broad single-layer buckle fold trains, with wavelengths reflecting layer thickness. The development of deformation appears limited by bending resistance at fold hinges, which can be overcome by syntectonic erosion. In contrast, the thick halite and K-salt accumulations in growth synclines have deformed with short-wavelength folds and distributed strain. These structures can display rapid lateral variations (on a scale of hundreds of metres). Similar structural styles, with buckle fold trains passing laterally into more homogeneously shortened, short-wavelength folding, are evident on seismic data from the buried Messinian interval beneath the Ionian Sea. Using the Sicilian outcrop as analogues, the structural styles for the Ionian may be used to infer evaporite type in these subsurface examples.

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“…Numerous studies document experiments of thrust wedges under normal gravity conditions (e.g., Davis et al 1983;Malavieille 1984;Mulugeta & Koyi 1987, 1992Mulugeta 1988;Colletta et al 1991;Lallemand et al 1994;Koyi 1995;Storti & McClay 1995;Mugnier et al 1997;Gutscher et al 1996Gutscher et al , 1998Storti et al 2000;Schreurs et al 2001;Turrini et al 2001;Kukowski et al 2002;Costa et al 2004;Hoth et al 2005). Deformation in these experiments occurs either by displacing a back wall or by pulling a basal sheet below a fixed wall.…”

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confidence: 99%

Analogue benchmarks of shortening and extension experiments

et al. 2006

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: We report a direct comparison of scaled analogue experiments to test the reproducibility of model results among ten different experimental modelling laboratories. We present results for two experiments: a brittle thrust wedge experiment and a brittleviscous extension experiment. The experimental set-up, the model construction technique, the viscous material and the base and wall properties were prescribed. However, each laboratory used its own frictional analogue material and experimental apparatus. Comparison of results for the shortening experiment highlights large differences in model evolution that may have resulted from (1) differences in boundary conditions (indenter or basal-pull models), (2) differences in model widths, (3) location of observation (for example, sidewall versus centre of model), (4) material properties, (5) base and sidewall frictional properties, and (6) differences in set-up technique of individual experimenters. Six laboratories carried out the shortening experiment with a mobile wall. The overall evolution of their models is broadly similar, with the development of a thrust wedge characterized by forward thrust propagation and by back thrusting. However, significant variations are observed in spacing between thrusts, their dip angles, number of forward thrusts and back thrusts, and surface slopes. The structural evolution of the brittle-viscous extension experiments is similar to a high degree. Faulting initiates in the brittle layers above the viscous layer in

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Modeling deformation and salt tectonics in the eastern Mediterranean Ridge accretionary wedge

Cited by 33 publications

References 55 publications

Seismic imaging of Late Miocene (Messinian) evaporites from Western Mediterranean back-arc basins

Seismic imaging of Late Miocene (Messinian) evaporites from Western Mediterranean back-arc basins

Stratigraphic variations control deformation patterns in evaporite basins: Messinian examples, onshore and offshore Sicily (Italy)

Analogue benchmarks of shortening and extension experiments

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