Overstep and imbrication along a sidewall ramp and its relationship to a hydrocarbon play in Tournaisian rocks of the Moncton Basin: the Peck Creek section, Albert Mines area, southeastern New Brunswick

Park, Adrian F.; Keighley, David; Peter, C. St.; Wilson, Paul

doi:10.2113/gscpgbull.58.3.268

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…Peter 1993) have been identified (Fig. 2) that indicate a complex history of fault-controlled subsidence, strike-slip motion, basin inversion, and salt tectonics (e.g., Wilson 2005;Wilson and White 2006;Park and St. Peter 2009;Park et al 2007Park et al , 2010Waldron et al 2013;Craggs et al 2017). Red beds are particularly abundant in the 2 nd megacycle (Upper Mississippian), where they have been formally differentiated into several formations in the Moncton and adjacent basins.…”

Section: Introductionmentioning

confidence: 99%

Sedimentology and chemostratigraphy of Carboniferous red beds in the western Moncton Basin, Sussex area, New Brunswick, Canada: possible evidence for a middle Mabou Group unconformity

Islam

Keighley

2018

atgeol

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The area around Penobsquis, east of Sussex, New Brunswick, Canada, is an important location of natural resources for the province. The McCully gas field produces from strata of the Mississippian Horton Group whereas younger strata of the Windsor Group are host to major potash and rocksalt deposits. Overlying these units are over 1 km of poorly understood red beds currently assigned to the Mississippian Mabou Group. To date, this latter unit lacks significant marker beds and has had no useful biostratigraphic recovery, despite recent extraction of close to 5 km of drill core. Research on this core broadly identifies siltstone and sandstone at the base of the Mabou Group that gradually coarsen up into conglomerate. The succession is considered the result of alluvial-fan progradation from the northeast. Within this succession, in several of the cores, is a single interval of localized, horizontally laminated to cross-stratified, bluish-grey sandstone, containing carbonaceous plant fragments and siltstone intraclasts. To assess the importance of this interval in the context of the red bed succession, a total of 131 samples of core from three boreholes have been analyzed using Inductively Coupled Plasma and spectroscopic techniques to determine chemostratigraphy. Study of various elemental ratios can delineate two packages, one that corresponds to the grey interval and overlying red beds, and the other to the underlying red beds. Changes in the elemental ratios are interpreted to mark a broader population of mineral species related to greater variation of provenance and diagenesis in the upper sediment package. The reduced horizons and rip-up clasts may have been produced by sediment reworking along a boundary that represents an unconformity (in core, a disconformity) at a stratigraphic level near to where one has been inferred by other workers.

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Section: Introductionmentioning

confidence: 99%

Sedimentology and chemostratigraphy of Carboniferous red beds in the western Moncton Basin, Sussex area, New Brunswick, Canada: possible evidence for a middle Mabou Group unconformity

Islam

Keighley

2018

atgeol

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“…Farther east, the Caledonia fault zone dips moderately NW and shows evidence in different places of normal, reverse, and strike‐slip motion [ Park and St. Peter , ; Park et al , , ]. It controlled sedimentation in both the Horton and the Sussex groups and underwent two episodes of thrust‐sense inversion, one after Horton Group deposition and one after Sussex Group deposition [ Park et al , ]. The whole system of faults disappears under unconformably overlying Windsor Group to the NE.…”

Section: Timing and Amount Of Slipmentioning

confidence: 99%

Late Paleozoic strike-slip faults in Maritime Canada and their role in the reconfiguration of the northern Appalachian orogen

et al. 2015

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Major late Paleozoic faults, many with documented strike-slip motion, have dissected the Ordovician-Devonian Appalachian orogen in the Maritime Provinces of Atlantic Canada. Activity alternated between east-west faults (Minas trend) and NE-SW faults (Appalachian trend). NW-SE faults (Canso trend) were probably conjugate to Minas-trend faults. Major dextral movement, on faults with Appalachian trend, in total between 200 and 300 km, began in the Late Devonian. This movement initiated the Maritimes Basin in a transtensional environment at a releasing bend formed around a promontory in the Laurentian margin and thinned the crust, accounting for the major subsidence of the basin. Appalachian-trend strike slip continued in the Mississippian but was accompanied by major movement on E-W Minas-trend faults culminating around the Mississippian-Pennsylvanian boundary, juxtaposing the Meguma and Avalon terranes of the Appalachians close to their present-day configuration. However, strike slip continued during the Pennsylvanian-Permian interval resulting in transpressional deformation that reactivated and inverted earlier extensional faults. A final major episode of transtension, mainly sinistral, occurred during the Mesozoic opening of the Atlantic Ocean. Restoration of movements on these faults, amounting to several hundred kilometers of slip, explains anomalies in the present-day distribution of terranes amalgamated during early Paleozoic Appalachian tectonism. In the restored geometry, the Nashoba and Ellsworth terranes of Ganderia are adjacent to one another, and the Meguma terrane lies clearly outboard of Avalonia. A restored post-Acadian paleogeography, not the present-day geometry of the orogen, should be used as a basis for reconstructions of its earlier Paleozoic history.

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“…Following continental collision in the Devonian, the northern Appalachians were influenced by right-lateral strike-slip along major transcurrent faults sub-parallel to the orogen. Areas of transtension and transpression formed, respectively, pull-apart basins (containing local volcanic units and thick sedimentary successions of the Horton -Mabou groups), and areas of uplift characterized by unconformities and deformation (Wilson & White, 2006;Park et al, 2010;Waldron et al, 2015). The result was small scale (~10 000-100 000 km 2 ) depocentres delimited by 'thick-skinned' basement-cored uplifts.…”

Section: Tectonic Settingmentioning

confidence: 99%

“…a). This succession displays a complex history of Mississippian fault‐controlled subsidence, strike‐slip motion and basin inversion (Park et al ., , ; Park & St. Peter, ). Pennsylvanian to lower Permian strata (Cumberland and Pictou groups) extend from western New Brunswick to south‐western Newfoundland (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Salt tectonics in an intracontinental transform setting: Cumberland and Sackville basins, southern New Brunswick, Canada

et al. 2015

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Salt tectonics have markedly influenced the rapid evolution of the Upper Palaeozoic Cumberland Basin of Atlantic Canada, including the ca. 5 km-thick Mississippian -Pennsylvanian stratigraphic succession exposed along the UNESCO World Heritage coastline at Joggins, Nova Scotia. A diapiric salt wall is exposed in the Minudie Anticline to the north of the Joggins section on the Maringouin Peninsula of New Brunswick, which corresponds to the fault-bounded northern margin of the Cumberland Basin. The salt wall is of Visean evaporites of the Windsor Gp that originally were buried by red-beds of the Mabou Gp in the Serpukhovian, and later by fluvial and floodplain strata (Boss Point Fm, Cumberland Gp) in the Yeadonian (mid-Bashkirian, Early Pennsylvanian). Folds and faults in the Boss Point and overlying basal Little River formations are truncated by an angular unconformity at the base of overlying red-beds of the Grande Anse Fm. Re-evaluation of the palynological data delimits the Grande Anse Fm as Langsettian, providing a tight constraint of less than 2 myr on the timing of deformation. Diversion of palaeoflows by the rising salt structure, noted in previous work on the upper Boss Point Fm, occurs to the north of the diapiric anticline. This is interpreted to signify the development of a mini-basin on commencement of diapirism once a~1.5 km-thick succession of clastic strata had buried the salt. Faults and folds in the succession below the unconformity indicate an initial phase of dextral transpressive strike-slip motion, which may have promoted halokinesis. Reverse faults indicate shortening associated with northward development and overturn of the Minudie Anticline during transpression; subsequent normal faulting was associated with collapse of the sediment pile and underlying salt structure.

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Overstep and imbrication along a sidewall ramp and its relationship to a hydrocarbon play in Tournaisian rocks of the Moncton Basin: the Peck Creek section, Albert Mines area, southeastern New Brunswick

Cited by 8 publications

References 15 publications

Sedimentology and chemostratigraphy of Carboniferous red beds in the western Moncton Basin, Sussex area, New Brunswick, Canada: possible evidence for a middle Mabou Group unconformity

Sedimentology and chemostratigraphy of Carboniferous red beds in the western Moncton Basin, Sussex area, New Brunswick, Canada: possible evidence for a middle Mabou Group unconformity

Late Paleozoic strike-slip faults in Maritime Canada and their role in the reconfiguration of the northern Appalachian orogen

Salt tectonics in an intracontinental transform setting: Cumberland and Sackville basins, southern New Brunswick, Canada

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