Origin of drag folds bordering salt diapirs

Schultz-Ela, Daniel D.

doi:10.1306/12200201093

Cited by 48 publications

(35 citation statements)

References 30 publications

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“…The sediments are rarely lifted and removed cookie-cutter style (active diapirism, Rowan et al, 2003). Instead, the sediments bend up above regional datum, and away from the central axis, in a circumferential synform, (or drag/flap fold, Alsop et al, 2000;Rowan et al, 2003;Schultz-Ela, 2003;Vendeville et al, 2003). This fold mechanism is distinct from rim synclines that are a response to movement in the salt source layer-these are discussed later.…”

Section: Widening Intrusionmentioning

confidence: 99%

“…4b). Folds are shaped by upward flowing salt lifting sediments that overstep the diapir crest (Rowan et al, 2003;Schultz-Ela, 2003;Figs. 2a, 4b).…”

Section: Passive Diapirism In Brittle Overburdenmentioning

confidence: 99%

“…kilometre to hundreds of metres scale Fialko et al, 2001). Secondly, markers within secondary rim synclines drop below local elevation datum, whereas drag folds rise above local elevation datum (Sørensen, 1986;Hossack, 1995;Schultz-Ela, 2003).…”

Section: Rim Synclinesmentioning

confidence: 99%

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Implications of passive salt diapir kinematics for reservoir segmentation by radial and concentric faults

Stewart

2006

Marine and Petroleum Geology

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Section: Widening Intrusionmentioning

confidence: 99%

“…4b). Folds are shaped by upward flowing salt lifting sediments that overstep the diapir crest (Rowan et al, 2003;Schultz-Ela, 2003;Figs. 2a, 4b).…”

Section: Passive Diapirism In Brittle Overburdenmentioning

confidence: 99%

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Implications of passive salt diapir kinematics for reservoir segmentation by radial and concentric faults

Stewart

2006

Marine and Petroleum Geology

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“…The salt-sediment interface at the flank of the salt stock is however, speculative. A narrow sediment deformation zone adjacent to the flank may exist, as apparent dragfolds or stacked onlap sets (Schultz-Ela, 2003;Rowan et al, 2003). Nevertheless, these structures were not observable in the seismic data, probably due to the blanking by the salt top.…”

Section: Passive Typementioning

confidence: 95%

“…2b). When a salt stock or tongue rises to above or close to the adjacent seafloor, the salt tops tend to spread out laterally, because there is virtually no confinement at the top of the salt (Schultz-Ela, 2003;Rowan et al, 2003). As a result, these structures appear as flaptopped highs on a map view.…”

Section: The Nature Of Hapsmentioning

confidence: 99%

Shallow sediment deformation styles in north-western Campeche Knolls, Gulf of Mexico and their controls on the occurrence of hydrocarbon seepage

Ding

Spieß

MacDonald

et al. 2010

Marine and Petroleum Geology

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Rising and falling diapirs, shifting depocenters, and flap overturning in the Cretaceous Sopeira and Sant Gervàs subbasins (Ribagorça Basin, southern Pyrenees)

Oró²,

et al. 2016

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The halokinetic structure of inverted salt‐related continental margins is frequently obliterated by compressional overprinting. The Cretaceous Sopeira and Sant Gervàs subbasins of the Ribagorça Basin (south central Pyrenees) show evidence of salt‐related extensional tectonics and diapiric growth along the Iberian Margin of the Mesozoic Pyrenean rift. We present an integrated field‐based tectonic‐sedimentary study to reconstruct the evolution of the Ribagorça Basin system previous to, and in the early stages of, the Pyrenean orogeny. The ~4 km thick Albian‐Cenomanian Sopeira minibasin infill thins toward the basin borders, especially toward the eastern, N‐S trending, Llastarri salt weld. The 90° tilt to the south of the Sopeira basin bottom records the growth of the buried north dipping Sopeira listric fault from Albian to Santonian times, when it evolved as an extensional rollover associated with the Aulet salt roller. The ~3 km thick Cenomanian‐Campanian succession filling the Sant Gervàs flap displays 130° bed fanning attitude from overturned Cenomanian carbonate platform strata to upright Campanian turbidite beds. The Sant Gervàs flap development since Cenomanian times was related to the fall of a large salt pillow after the main Soperia minibasin stage. Jurassic‐Campanian diachronous subsidence is also observed in the adjacent Montiberri, Faiada, and Tamurcia depocenters. Correlation with the Pedraforca, Cotiella, and Basque‐Cantabrian Basins along the southern Pyrenees suggests that a significant segment of the Iberian side of the Pyrenean rift experienced a gravity‐driven extension from Albian to late Santonian. The Ribagorça Basin provides an excellent field analogue for presently buried salt‐related structures of extended passive margins.

show abstract

Origin of drag folds bordering salt diapirs

Cited by 48 publications

References 30 publications

Implications of passive salt diapir kinematics for reservoir segmentation by radial and concentric faults

Implications of passive salt diapir kinematics for reservoir segmentation by radial and concentric faults

Shallow sediment deformation styles in north-western Campeche Knolls, Gulf of Mexico and their controls on the occurrence of hydrocarbon seepage

Rising and falling diapirs, shifting depocenters, and flap overturning in the Cretaceous Sopeira and Sant Gervàs subbasins (Ribagorça Basin, southern Pyrenees)

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