Examples of Deep-Water Salt Tectonics from West Africa: Are They Analogs to the Deep-Water Salt-Cored Fold Belts of the Gulf of Mexico?

Tari, Gábor; Ashton, Paul R.; Coterill, Katrina; Molnar, Jim; Sorgenfrei, Michael C.; Thompson, Philip W.A.; Valasek, David; Fox, James F.

doi:10.5724/gcs.01.21.0251

Cited by 5 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…West Africa: Marton et al, 2000;Tari et al, 2001;Brazil: Cobbold and Szatmari, 1991;Demercian et al, 1993;Davison, 2007) as well as in the Gulf of Mexico (e.g. Peel et al, 1995;Trudgill et al, 1999;Grando and McClay, 2004).…”

Section: Initial Sedimentary Cover Above Saltmentioning

confidence: 97%

“…The concept of salt tectonics driven by dominant gliding down an inclined basal surface of saltesediment two-layer systems was mostly inspired by studies carried out in the South Atlantic (Western Africa: Duval et al, 1992;Spathopoulos, 1996;Marton et al, 2000;Tari et al, 2001;Brazil: Cobbold and Szatmari, 1991;Demercian et al, 1993) and North Sea (Nalpas and Brun, 1993;Coward, 1995;Stewart and Coward, 1995). Different types of laboratory experiments (Cobbold and Szatmari, 1991;Gaullier et al, 1993;Mauduit et al, 1997Fort et al, 2004a,b;Brun andMauduit, 2008, 2009) or numerical modelling Albertz et al, 2010; have been carried out to characterise the structures produced by gliding above salt.…”

Section: Laboratory Experimentsmentioning

confidence: 99%

“…Rafts form at early stages of extension by brittle faulting of thin sedimentary layers, generally less than 1 km thick, deposited on top of the salt (Lundin, 1992;Liro and Cohen, 1995;Spathopoulos, 1996;Rouby et al, 2002). Seismic data in the ultra-deep part of the margins has shown that updip extension was coeval with either thrusting and buckling of the sedimentary cover downdip or flowing of frontal salt nappes on top of the abyssal plain (Cobbold and Szatmari, 1991;Cobbold et al, 1995;Marton et al, 2000;Cramez and Jackson, 2000;Tari et al, 2001;Gottschalk et al, 2004;Brun and Fort, 2004;Fort et al, 2004a). Even if sedimentary loading participates in the gliding process, its role is not a major one as salt is able to flow downdip without any sedimentary loading.…”

Section: Introductionmentioning

confidence: 95%

See 2 more Smart Citations

Salt tectonics at passive margins: Geology versus models

Brun

Fort

2011

Marine and Petroleum Geology

189

144

View full text Add to dashboard Cite

Section: Initial Sedimentary Cover Above Saltmentioning

confidence: 97%

Section: Laboratory Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Salt tectonics at passive margins: Geology versus models

Brun

Fort

2011

Marine and Petroleum Geology

189

144

View full text Add to dashboard Cite

“…The geology of this large area is relatively well studied, but its salt tectonics has been analyzed only in a few previous publications (Heyman, 1989;Hafid, 2000Hafid, , 2006Mridek, 2000;Hafid et al, 2000Hafid et al, , 2005bTari et al, 2000Tari et al, , 2001Tari et al, , 2003. Here, it will show be shown that salt tectonics strongly controlled the geological evolution of the area.…”

Section: Introductionmentioning

confidence: 98%

Salt tectonics and structural styles of the western High Atlas and the intersecting Essaouira‐Cap Tafelney segments of the Moroccan Atlantic margin

Hafid¹,

Bally

Salem

et al. 2010

Quaternary Carbonate and Evaporite Sedimentary Facies and Their Ancient Analogues

View full text Add to dashboard Cite

The Safi-Agadir Moroccan coastal region is the only area where the Moroccan Atlantic salt province makes an inland incursion. It is also an area where the High Atlas alpine fold-belt intersects at right angles the Atlantic passive margin. Regional reflection seismic transects have been constructed across this area and its offshore extension. These are used here to analyze the effects of the post-sedimentary mobility of salt on sedimentation and on structural styles, and to link these effects to the main stages of the geodynamic evolution of the Atlas and the Atlantic systems. Salt was deposited in Late Triassic-Early Jurassic times during the last stage of rifting prior to continental breakup. It played an important role in the genesis of most of the structures presently encountered in the area. A great variety of salt structures have been identified, including: gentle salt-cored folds and pillows; compressional diapirs; and salt withdrawal synclines. Completely allochthonous pluri-kilometric salt sheets and canopies are bounded to the west by toe-thrust salt structures that overlie oceanic crust in the deep offshore basin. This offers a great variety of favourable settings for possible hydrocarbon traps.

show abstract

Kinematics of regional salt flow in the northern Gulf of Mexico

Fort¹,

Brun

2012

View full text Add to dashboard Cite

International audienceThe kinematics of regional-scale salt flow in the northern Gulf of Mexico is analysed using: (i) a map of shelf-break contours at the termination of successive depositional episodes; (ii) the location and geometry of large-scale structures of the slope domain as imaged by seismics; and (iii) digital slope bathymetry. In the north margin, salt has flowed towards the SW since the Cretaceous with three main stages of development prior to, during and after a massive salt extrusion in the Early Miocene time. The corresponding sequence of structural development is discussed using a laboratory model. Contrary to all previous interpretations that invoked sedimentary loading as the main driving force, the analysis of regional-scale salt flow implies that the salt tectonics of the northern Gulf of Mexico is predominantly controlled by gliding above the margin dip. The SWdirected salt flow indicates that the north margin of the northern Gulf of Mexico trendsNW-SE, in agreement with plate kinematic models in which the Yucatan continental block has undergone a 45-608 dextral rotation relative to its present orientatio

show abstract

Examples of Deep-Water Salt Tectonics from West Africa: Are They Analogs to the Deep-Water Salt-Cored Fold Belts of the Gulf of Mexico?

Cited by 5 publications

References 15 publications

Salt tectonics at passive margins: Geology versus models

Salt tectonics at passive margins: Geology versus models

Salt tectonics and structural styles of the western High Atlas and the intersecting Essaouira‐Cap Tafelney segments of the Moroccan Atlantic margin

Kinematics of regional salt flow in the northern Gulf of Mexico

Contact Info

Product

Resources

About