Crustal structure and lateral variations in the Gulf of Mexico conjugate margins: From rifting to break-up

Izquierdo‐Llavall, Esther; Ringenbach, J.-C.; Sapin, François; Rives, T.; Callot, Jean‐Paul

doi:10.1016/j.marpetgeo.2021.105484

Cited by 12 publications

(28 citation statements)

References 107 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hudec et al, 2013; Hudec & Norton, 2019; Jackson, Jackson, & Hudec, 2015; Jackson, Jackson, Hudec, & Rodriguez, 2015; Pichel, Huuse, et al, 2019; Pichel et al, 2020; Pichel & Jackson, 2020), and the characterization of the underlying rifted margin nature and tectonostratigraphic architecture (cf. Epin et al, 2021; Fernandez et al, 2020; Izquierdo‐Llavall et al, 2022; Kumar et al, 2013; Norton et al, 2016; Pichel et al, 2022a, 2022b; Sapin et al, 2021; Zalán et al, 2011). The first type of uncertainty is related to the ability of the salt to flow and its high seismic velocity, producing complex and often sub‐vertical geometries, which hamper seismic imaging.…”

Section: Introductionmentioning

confidence: 99%

“…Examples of salt‐bearing rifted margins include the Gulf of Mexico (Hudec & Norton, 2019; Izquierdo‐Llavall et al, 2022; Rowan, 2020), Nova Scotia‐Newfoundland, SW Iberia and NW Africa in the Central Atlantic (Alves et al, 2003; Deptuck & Kendell, 2017; Tari et al, 2017), the Brazilian and West African margins in the South Atlantic (Kukla et al, 2018; Lentini et al, 2010; Marton et al, 2000; Pichel et al, 2021; Rowan, 2020) and the Red Sea (Augustin et al, 2014; Mohriak & Leroy, 2013). In the majority of these examples (except for Iberia and Newfoundland), the salt was deposited during the latest stages of rifting, that is after most of the crustal extension had migrated towards the future distal margin and prior to continental breakup (cf.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The West African salt‐bearing rifted margin—Regional structural variability and salt tectonics between Gabon and Namibe

et al. 2023

Self Cite

View full text Add to dashboard Cite

Salt‐bearing rifted margins comprise some of the most structurally complex and economically important sedimentary basin settings such as the South Atlantic and the Gulf of Mexico salt basins. They are also involved with some of the largest uncertainties regarding the crustal and syn‐rift basin architecture and supra‐salt tectonic evolution, as well as the link between rifted margin architecture with salt deposition and post‐rift gravity‐driven salt tectonics. We thus conduct a margin‐scale study along nearly the entire West African salt basin, from South Gabon to Namibe, combining a vast data set of 2D and 3D seismic and well data with gravimetric and magnetic data to analyse its along‐strike rift and salt tectonic structural variability. We construct regional structural and thickness maps of key salt and post‐salt intervals to depict the history of individual margin segments and to investigate (1) how rifting and rifted margin architecture influences post‐rift salt tectonics evolution, (2) how these vary through time and space and (3) what are the controls between their different salt tectonic styles. We show that rifting and rift structures controlled the salt basin geometry, thickness and base‐salt relief in different ways for the different margin segments, and drastically influenced their post‐rift salt tectonic evolution. Differences in post‐salt sediment supply and continental uplift also had a role in their salt tectonic evolution. The results also have general implications to understand the interplay between rifted margin architecture with post‐rift salt tectonics for salt‐bearing rifted margins.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The West African salt‐bearing rifted margin—Regional structural variability and salt tectonics between Gabon and Namibe

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…The black dashed line traces the Ouachita, Appalachian mountain ranges. The colored outlines in the central basin marks distribution of oceanic crust from previous studies: red (Hudec et al., 2013), gray (Minguez et al., 2020), and black (Izquierdo‐Llavall et al., 2022). Limit of crystalline crust with thickness <10 km derived from this study is shown with the blue dashed outline.…”

Section: Introductionmentioning

confidence: 95%

“…In addition, presence of exhumed serpentinized mantle along the northern GOM margin has been proposed from analysis of aeromagnetic data (Minguez et al., 2020; Pindell et al., 2016). More modern seismic reflection profiles also suggest segments of exhumed mantle as well as magmatic intrusion/extrusion along the Yucatan margins (Izquierdo‐Llavall et al., 2022). These findings together show strong variation in crustal structures along the rifted margins surrounding the GOM that could hold key insights to the processes of continental breakup.…”

Section: Introductionmentioning

confidence: 99%

Insights on Formation of the Gulf of Mexico by Rayleigh Surface Wave Imaging

Nguyen

Levander

Niu

et al. 2022

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Introduction Geographic SettingPassive margins mark the region where the lithospheric plates break apart and the transition from continental to an oceanic domain takes place. This geologic region preserves a record of the tectonic, magmatic, and sedimentary processes that accompany continental extension and therefore is important to the understanding of plate tectonics. In this study, we investigated the margins surrounding the Gulf of Mexico (GOM), as well as the deep GOM ocean itself, to better understand the Triassic-Jurassic breakup of the North and South American plates during the opening of the Atlantic. The GOM is a relatively small ocean basin situated south of the continental US that is surrounded on the east, north, and west by the North American plate, and on the south by Cuba. The GOM is connected to the Atlantic Ocean through the Florida Straits and to the Caribbean Sea through the Yucatan Channel (Figure 1). A large part of the GOM is occupied by continental margins made up of stretched continental lithosphere with a small ocean basin in the center. The US Gulf Coast margin and the margin offshore Yucatan formed as a conjugate pair during a period of rifting beginning in Late Triassic (∼200 Ma) followed by seafloor spreading starting and ceasing between ∼160 and ∼140 Ma (

show abstract

“…The style and magnitude of salt tectonics, margin width and architecture of model M2 can be compared with the Espirito Santo Basin, Brazil (Figure 1a) (Blaich et al, 2011;Kukla et al, 2018), parts of the northeast and the southern Gulf of Mexico (Hudec & Norton, 2019;Izquierdo-Llavall et al, 2022), Nova Scotia (Deptuck & Kendell, 2017) and northwest Africa (Tari et al, 2003(Tari et al, , 2012(Tari et al, , 2017. The Espirito Santo margin, for example, is ∼160 km wide, shows minor to no diapirism in the proximal domain, and a greater magnitude of updip extension along salt-detached normal faults (∼10 km) than narrow margins (cf., Figures 1d and 1e).…”

Section: Comparison With Natural Examplesmentioning

confidence: 99%

Coupling Crustal‐Scale Rift Architecture With Passive Margin Salt Tectonics: A Geodynamic Modeling Approach

et al. 2022

View full text Add to dashboard Cite

Continental rifting and breakup are a product of the extension and thinning of the lithosphere and ocean floor spreading (McKenzie, 1978). The style of rifting and margin architecture is generally controlled by the rheology and overall composition of the crust and mantle lithosphere. Strong crust favors narrow rifting whereas weak crust promotes formation of wide rifted margins (Buck, 1991;Huismans & Beaumont, 2011. Other factors such as the lithospheric thermal state and thickness, inheritance and temporal and spatial variations in rifting kinematics also influence rifted margin architecture (

show abstract

Crustal structure and lateral variations in the Gulf of Mexico conjugate margins: From rifting to break-up

Cited by 12 publications

References 107 publications

The West African salt‐bearing rifted margin—Regional structural variability and salt tectonics between Gabon and Namibe

The West African salt‐bearing rifted margin—Regional structural variability and salt tectonics between Gabon and Namibe

Insights on Formation of the Gulf of Mexico by Rayleigh Surface Wave Imaging

Coupling Crustal‐Scale Rift Architecture With Passive Margin Salt Tectonics: A Geodynamic Modeling Approach

Contact Info

Product

Resources

About