Influence of differential compaction above basement steps on salt tectonics in the Ligurian-Provençal Basin, northwest Mediterranean

Maillard, Agnès; Gaullier, Virginie; Vendeville, Bruno C.; Odonne, Francis

doi:10.1016/s0264-8172(03)00022-9

Cited by 51 publications

(44 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…9B-C may represent salt walls formed along normal faults in the overburden in the manner described by Jackson and Vendeville (1994). The walls south of the Mazarrón Escarpment may mimic structural trends in the layer beneath the salt as described by Gaullier et al (1993) and Maillard et al (2003). If these features do mimic the structural trend of the layers beneath the salt, these trends may represent divergent wrench structures associated with the transcurrent-transpression motion along Mazarrón Escarpment as the Alborán microplate migrated westward.…”

Section: Salt Structuresmentioning

confidence: 64%

“…Possibly the faulted furrows west and northwest of the circular structure that circumscribe the low also reflect the configuration of the basement beneath the salt. Structures having the same trends were formed by Maillard et al (2003, their …”

Section: Salt Structuresmentioning

confidence: 75%

“…(2010) and Maillard et al (2003) have further pointed out that structural trends within the glided formations mimic the trends in the formations beneath the salt décollement. Brun and Fort (2010) stated that from a theoretical point of view, gliding on any basal slope, not matter how small, is more efficient than sediment loading in creating salt diapirism.…”

Section: Salt Structuresmentioning

confidence: 93%

See 2 more Smart Citations

The morpho-tectonic setting of the Southeast margin of Iberia and the adjacent oceanic Algero-Balearic Basin

Acosta

Fontán

Muñoz

et al. 2013

Marine and Petroleum Geology

View full text Add to dashboard Cite

Section: Salt Structuresmentioning

confidence: 64%

Section: Salt Structuresmentioning

confidence: 75%

Section: Salt Structuresmentioning

confidence: 93%

See 1 more Smart Citation

The morpho-tectonic setting of the Southeast margin of Iberia and the adjacent oceanic Algero-Balearic Basin

Acosta

Fontán

Muñoz

et al. 2013

Marine and Petroleum Geology

View full text Add to dashboard Cite

“…Gaullier, 1993;Rowan et al, 1999;Maillard et al, 2003;Reis et al, 2004a;Reis et al, 2005a;Loncke et al, 2006).…”

Section: Introductionunclassified

Radial gravitacional gliding indicated by subsalt relief and salt-related structures: the example of the gulf of lions, western mediterranean

Reis¹,

Gorini²,

Weibull³

et al. 2008

Rev. Bras. Geof.

View full text Add to dashboard Cite

ABSTRACT. The young Messinian salt basin offshore the Gulf of Lions comprises a shallow décollement layer (maximum of 3.6 km deep) that allows the seismic imaging of the subsalt relief and the correlation between the shape of subsalt relief and gravity-driven structures. The subsalt relief reveals a variable morphology below the salt layer, characterized by both convex and concave shapes, indicating the occurrence of radial gravitational gliding at the scale of the entire Gulf of Lions.Radial gravitational gliding is equally illustrated by the distribution of the Messinian salt layer. The salt isopach map shows overthickened salt mass overlying subsalt relief of concave shape, pointing to a pattern of convergent gliding, and areas of salt thinning (over convex shape of subsalt relief) indicating divergent gliding. Radial gravitational gliding is also reflected by salt-related structures. Families of normal transverse faults striking parallel to the regional dip direction attest the control exerted by components of strike-parallel extension over areas of convex shape of subsalt relief, whereas widespread buckle folds overlying concave shape of subsalt relief indicate the occurrence of a convergent pattern of salt migration and associated translational gliding. The Gulf of Lions provides then an interesting geological setting to focus on gravity tectonics as well as a model to correlate mapped salt-related structures with those predicted by analogue models.Keywords: salt tectonics, radial gravitational gliding, passive margin evolution, basin analysis, marine seismic reflection, Gulf of Lions-France. RESUMO.A bacia evaporítica Messiniana do Golfo de Lion constitui um nível basal móvel bastante raso (∼3.6 km de profundidade), o que facilita o imageamento sísmico da superfície de décollement e a correlação entre tipos de estruturas gravitacionais e a forma do relevo subsalífero. O relevo subsal revela morfologias convexas e côncavas, sugerindo direções radiais regionais de fluxo gravitacional. O deslizamento radialé ainda indicado pelas variações de espessura da camada de sal. Enquanto zonas de superespessamento do sal recobrem regiões côncavas do relevo subsalífero, e indicam padrão de deslizamento convergente; zonas de afinamento da camada de sal recobrem porções convexas da superfície de décollement , indicando um padrão de deslizamento divergente. O padrão de deslizamento radial reflete-se ainda no arcabouço estrutural pela presença de falhas normais transversais e dobramentos nucleados pelo sal. Falhas paralelasà direção de mergulho regional da bacia afetam a cobertura sedimentar sobrejacente aáreas côncavas do relevo subsalífero, atestando a intervenção de componentes de extensão paralela ao strike da margem.Além disso, uma grande concentração de estruturas compressionais afeta a cobertura sedimentar sobrejacente a porções côncavas do relevo subsalífero, atestando um padrão convergente de deslizamento translacional. O Golfo de Lion oferece, deste modo, um interessante cenário para estudos de tectônica gravitac...

show abstract

“…Sandbox experiments provide an effective means of simulating tectonic processes such as divergence or convergence of plates by stretching or compressing sand in a sandbox model (e.g., Davis et al 1983;Dahlen et al 1984;Malavieille 1984;Mulugeta 1988aMulugeta , b, 2002Bar and Dahlen 1989;Dahlen and Barr 1989;Dahlen 1990;Colletta et al 1991;Lallemand et al 1992;Willett 1992;Willett et al 1993;Byrne et al 1993;Calassou et al 1993;Sassi et al 1993;Lu and Malavieille 1994;Lallemand et al 1994;Lu et al 1995;Koyi 1995;Gutscher et al 1996Gutscher et al , 1998aMugnier et al 1997;Wand and Davis 1996;Storti et al 1997;Lu et al 1998;Bonini et al 2000;Wang and Hung 2002;Costa and Vendeville 2002;Lu et al 2002;Mouthereau et al 2002;Koyi and Vendeville 2003;Maillard et al 2003;CouzensSchultz et al 2003). The deformational process and resulting structures observed in sandbox modeling not only provide further insight into actual tectonic activities, but also facilitate an interpretation into the nature of the associated mechanism.…”

Section: Introductionmentioning

confidence: 99%

Sandbox Experiments of Plate Convergence - Scale Effect and Associated Mechanisms

Lin¹,

Chen²,

Chang³

et al. 2005

Terr. Atmos. Ocean. Sci.

View full text Add to dashboard Cite

ABSTRACT1 Department of Civil Engineering, National Taiwan University, Taipei, Taiwan, ROC 2 Institute of Geoscience, National Taiwan University, Taipei, Taiwan, ROC 3 Department of Civil Engineering, National Central University, Chung-Li, Taiwan, ROC * Corresponding author address: Prof. Fu-Shu Jeng, Department of Civil Engineering, National Taiwan University, Taipei, Taiwan, ROC; E-mail: fsjeng@ntu.edu.tw When using a sandbox to simulate tectonic activities, it is essential to thoroughly understand scale effect and its consequence so as to ensure an adequate model with representative simulation results. This paper investigates the topography, faulting lineaments, and internal structures of different scales associated with the simulation of plate convergence using sandbox modeling, based on three major test series. In the first test series, plate convergence is performed using simple models with flat bases to investigate fundamental behavior and observe the scale effect. The scales of sandbox models are altered either by varying the thickness of sand or by applying centrifugal conditions. The models have a relative depth scale of 1 : 2 : 20 : 40. In the second test series, the scale effects of a sandbox modeling given more realistic conditions are studied, i.e., models with underlain basement highs based on the configuration of western Taiwan. In the third test series, the impact of rougher base friction, and the effects of compaction are investigated to identify possible factors related to scale effect. Based on the observed scale effect, the possible factors accounting for scale effects are also discussed in this paper.Just like most sands, the sand tested is characterized by two phenomena: (1) its internal frictional angle increases from 34° to 41° under greater degrees of compaction, with a relative density ranging from 55 to 90%; and (2) it possesses nonlinear constitutive behavior, whereby the deformational modulus increases upon greater confining stress. Such behavior inherently accounts for scale effect in the way that the embedded stress of sand is TAO, Vol. 16, No. 3, August 2005 596 proportional to its depth; however, the frictional angle and the stiffness of sand cannot be retained constant.Results obtained from the first test series indicate that models with greater depth scale tend to have less deformation concentration near the backstop, quicker thrust faulting and longer fault propagation distances. Meanwhile, internal structures of models with greater depth scales, characterized by more pop-up structures, differ from those of small-scale models. Based on the critical wedge theory, the smaller slope angle yielded under a greater depth scale indicates stronger material strength, which results from greater confining stress or compaction. Moreover, the hardening, or increased stiffness of sand may facilitate forward propagation of convergence stress thereby contributing to the occurrence of scale effect.For the second test series, the yielding of three major fault groups, and curved faults is c...

show abstract

Influence of differential compaction above basement steps on salt tectonics in the Ligurian-Provençal Basin, northwest Mediterranean

Cited by 51 publications

References 32 publications

The morpho-tectonic setting of the Southeast margin of Iberia and the adjacent oceanic Algero-Balearic Basin

The morpho-tectonic setting of the Southeast margin of Iberia and the adjacent oceanic Algero-Balearic Basin

Radial gravitacional gliding indicated by subsalt relief and salt-related structures: the example of the gulf of lions, western mediterranean

Sandbox Experiments of Plate Convergence - Scale Effect and Associated Mechanisms

Contact Info

Product

Resources

About