Palynological zonation and correlation of sixty-seven wells, eastern Canada

Barss, M S; Bujak, J P; Williams, G L

doi:10.4095/104894

Cited by 67 publications

(60 citation statements)

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“…Multiple wells encountered the Argo Formation but only two wells on the Scotian Shelf drilled into undeformed autochthonous salt. Age determinations vary from Early Jurassic to Late Triassic (pre-Pliensbachian (pollen analysis and stratigraphic position [McIver, 1972]) to Hettangian to Sinemurian (spore analysis [Bujak and Williams, 1977]) and Rhaetian to early Hettangian [Barrs et al, 1979]). The Argo Formation has a measured thickness of 1597 m in the Eurydice P-36 well, but Jansa and Wade [1975] suggested that the original evaporites were thicker in deeper subbasins and may have exceeded 1800 m in some regions.…”

Section: Summary Of the Geology Of The Scotian Basinmentioning

confidence: 99%

An investigation of salt tectonic structural styles in the Scotian Basin, offshore Atlantic Canada: 1. Comparison of observations with geometrically simple numerical models

Albertz¹,

Beaumont

Shimeld

et al. 2010

Tectonics

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[1] Three primary salt tectonic structural styles of the Scotian Basin are compared with plane strain finite element models in order to investigate their origin. Here, we focus on simplified model salt basins with initial rectangular cross-sectional geometries and follow their evolution in the context of tectonic and parametric thermal subsidence and under various sedimentation regimes. Structural style A, an open-ended roho system with a synkinematic wedge, is reproduced by models including deltaic progradation and seaward spreading/ gliding of sediments above a salt detachment. Structural style B, a linked salt tectonic system with landward regional normal faults and allochthonous salt sheets climbing seaward over Late Cretaceous and Paleogene strata, is shown to be a consequence of early aggradation followed by progradation. Structural style C is characterized by salt diapirs and intervening minibasins and is reproduced by models with Rayleigh-Taylor instabilities requiring compaction driven density inversions, weak sediments, and initial perturbations of the overburden-salt interface.

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Section: Summary Of the Geology Of The Scotian Basinmentioning

confidence: 99%

An investigation of salt tectonic structural styles in the Scotian Basin, offshore Atlantic Canada: 1. Comparison of observations with geometrically simple numerical models

Albertz¹,

Beaumont

Shimeld

et al. 2010

Tectonics

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“…Offshore Eastern Canada: ; Williams and Brideaux (1975); Williams and Bujak (1977b); Ioakim (1979); Barss et al (1979); DTorio (1986); Bujak et al (1987). (Note that Williams and Bujak's [1977b] postulated "late Eocene" Diphyes colligerum Zone here is taken to include the upper mid dle Eocene (Bartonian), following the scheme of Berggren et al [1985].)…”

Section: Other Paleogene Palynological Studiesmentioning

confidence: 99%

Palynology and Dinocyst Stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 647A, Labrador Sea

Head¹,

Norris²

1989

Proceedings of the Ocean Drilling Program

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Dinoflagellate cysts were recovered throughout the Paleogene succession of Hole 647A, which contains an almost complete deep-water record of early Eocene through early late Oligocene sedimentation in the Labrador Sea. Dinofla gellate cyst biostratigraphy is in general accord with that provided by other microfossil groups and is consistent with a lower Eocene age, as determined by nannofossils, for basal sediments in Hole 647A. These sediments overlie oceanic crust of Chron 24 age.Dinocyst assemblages indicate outer neritic to oceanic conditions throughout, although the persistent occurrence of Wetzeliellaceae specimens in the lower Eocene suggests a greater influence from shelf environments during this time. Lower Eocene dinocyst assemblages are similar to coeval assemblages from the Rockall Plateau, but those from the middle to upper Eocene have mixed affinities and may be related to the intensification of the proto-Gulf Stream from middle Eocene time. Oligocene dinocyst assemblages suggest the influence of both arctic and North Atlantic water masses at this site. The presence of protoperidineacean species in the upper Eocene and Oligocene may indicate in creased availability of nutrients, perhaps related to increased upwelling or the effects of water-mass mixing.Productive samples are dominated by dinocysts and acritarchs, while sporomorphs are represented mainly by bisaccate pollen. Preservational differences within samples may reflect mixing of penecontemporaneous dinocyst popula tions during the Eocene, and all samples examined may have a considerable allochthonous component. Variability in relative abundance of many species during the Eocene may be related to fluctuating water-mass properties.A total 175 dinocyst and acritarch taxa were recorded from 53 productive samples from the Paleogene. Only one Pa leogene sample was barren of palynomorphs. Of three Miocene samples processed, all were barren.

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“…The dinocyst zonation of the section from the Yatria River shows a significant similarity with the zonal subdivisions of Boreal regions of Europe (Duxbury 1977, Fisher & Riley 1977, Rawson & Riley 1982, Davey 1982, Woollam & Riding 1983, Prossl 1990, Poulsen 1994. In some intervals, the Yatria zonation is quite comparable with the zonation suggested by Davies (1983) for Arctic Canada and differs from the zonal schemes of Eastern Canada (Barss et al 1979, van Helden 1986.…”

Section: Subtrochammina Yatriensis Assemblage Zonementioning

confidence: 63%

Dinoflagellate cysts and microforaminifera of the Lower Cretaceous Yatria River section, Subarctic Ural, NW Siberia (Russia). Biostratigraphy, palaeoenvironmental and palaeogeographic discussion

Lebedeva¹,

Nikitenko²

1999

Grana

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Palynological zonation and correlation of sixty-seven wells, eastern Canada

Cited by 67 publications

References 0 publications

An investigation of salt tectonic structural styles in the Scotian Basin, offshore Atlantic Canada: 1. Comparison of observations with geometrically simple numerical models

An investigation of salt tectonic structural styles in the Scotian Basin, offshore Atlantic Canada: 1. Comparison of observations with geometrically simple numerical models

Palynology and Dinocyst Stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 647A, Labrador Sea

Dinoflagellate cysts and microforaminifera of the Lower Cretaceous Yatria River section, Subarctic Ural, NW Siberia (Russia). Biostratigraphy, palaeoenvironmental and palaeogeographic discussion

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