US central Atlantic: new plays and petroleum prospectivity

Post, Paul J.; Elliott, Erin T.; Klazynski, Ralph J.; Klocek, Elizabeth S.; DeCort, Thierry; Riches, Thomas J.; Li, Kun

doi:10.1144/sp369.2

Cited by 5 publications

(3 citation statements)

References 35 publications

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“…Mohriak et al, 1998;Jackson et al, 2000;Blaich et al, 2011), or beneath thin salt such as in the northeastern Gulf of Mex-ico ( Fig. 13) (Imbert, 2005;Post, 2005;Pindell & Kennan, 2007). But do the SDRs extend beneath the thicker salt where there is generally poor imaging, such that the major salt basins are magma-rich?…”

Section: Magmatic Influencementioning

confidence: 99%

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Passive‐margin salt basins: hyperextension, evaporite deposition, and salt tectonics

2014

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Passive-margin salt basins are classified as prerift, syn-stretching, syn-thinning, and syn-exhumation. Prerift salt, such as the Triassic Keuper in the Western Pyrenees, undergoes thick-skinned extension, first decoupled and then coupled, along with its substrate and cover. The base salt develops significant relief, is attenuated on the largest faults, and ends up distributed across the entire margin. Syn-stretching salt, such as along the Iberian and Newfoundland margins, is deposited during early rifting and is thus concentrated in proximal areas with variable thickness and extent, with decoupled and coupled thick-skinned deformation dominant. Syn-thinning salt, such as in the northern Red Sea, is also deposited during extension, with the base salt unconformably above proximal stretching faults but offset by distal thinning faults. Both thick-skinned and gravity-driven thinskinned deformation occur, with the latter strongly influenced by the ramp-flat geometry of the base salt. Syn-exhumation salt, such as in the Gulf of Mexico and South Atlantic salt basins, is deposited as part of the sag basin with broad distribution and a generally unfaulted base. Conjugate syn-exhumation salt basins are originally contiguous, form partly over exhumed mantle on magma-poor margin segments, and are commonly flanked by magma-rich segments with volcanic highs (seawarddipping reflectors) that isolate the salt basin from marine water. Salt tectonics is characterized by gravitational failure of the salt and overburden, with proximal extension and distal contraction, and the development of allochthonous salt that includes frontal nappes that advance over newly formed oceanic crust.

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Section: Magmatic Influencementioning

confidence: 99%

“…Salt basins can develop along magma-rich segments such as the eastern margin of the USA and the conjugate margin of NW Africa (e.g. Davison, 2005;Post et al, 2013), but they are typically small basins in local sags or fault-bounded graben within the SDR provinces.…”

Section: General Model For Syn-exhumation Salt Basinsmentioning

confidence: 99%

Passive‐margin salt basins: hyperextension, evaporite deposition, and salt tectonics

2014

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“…Their study and others suggest that the eastern North American rift system is characterized by a very broad zone of upper-crustal extension in which a few, wide, deep, long-lived, fault-bounded basins (like the Newark Basin) accommodated much of the extension. Post et al (2012) concisely describe the geology and evolution of the US central Atlantic margin. They provide a short summary of the single phase of exploratory drilling carried out in three of the five post-rift sedimentary depocentres on the continental shelf.…”

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Conjugate divergent margins: an introduction

Danforth¹,

Post²,

Brown³

et al. 2013

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Abstract:The main objective of this book is to provide a global overview of divergent margins based on geological and geophysical interpretation of sedimentary basins along the South, Central and North Atlantic conjugate margins, from plate tectonics and crustal scales to a more detailed description of stratigraphical and structural elements that are responsible for petroleum plays. These themes are complemented by geodynamic concepts based on physical and numerical models, and by comparisons with present-day embryonic margins, which are succinctly discussed in some papers.

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The Magmatic Rifting of Santos Basin: Aeromagnetic Mapping of Dykes, Terranes and Marginal Structures and the Interplay Between Tectonism and Volcanism

et al. 2023

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The southeastern Brazilian margin resulted from the rifting of the Gondwana paleocontinent and the formation of the South Atlantic in the Early Cretaceous (Chang et al., 1992). Several tectonomagmatic events influenced the evolution of the margin until the Eocene. The magmatic pulses started with the formation of the intracontinental Paraná-Etendeka large igneous province (LIP) (Turner et al., 1994), followed by a series of small intrusions and plugs of alkaline affinity and extensive dyke swarms, well preserved in distinct sectors of the coast of the

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US central Atlantic: new plays and petroleum prospectivity

Cited by 5 publications

References 35 publications

Passive‐margin salt basins: hyperextension, evaporite deposition, and salt tectonics

Passive‐margin salt basins: hyperextension, evaporite deposition, and salt tectonics

Conjugate divergent margins: an introduction

The Magmatic Rifting of Santos Basin: Aeromagnetic Mapping of Dykes, Terranes and Marginal Structures and the Interplay Between Tectonism and Volcanism

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