Provenance of Upper Jurassic to Lower Cretaceous synrift strata in the Terra Nova oil field, Jeanne d’Arc basin, offshore Newfoundland: A new detrital zircon U-Pb-Hf reference frame for the Atlantic Canadian margin

Hutter, Alexander D.; Beranek, Luke P.

doi:10.1306/02232018241

Cited by 7 publications

(7 citation statements)

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“…In west Iberia, the Variscan population tends to become younger in deposits supplied from more interior parts of the Ibero‐Armorcan arc (age maxima ranging from ~390 to 330, if sourced from SPZ, to 330–310 Ma, if sourced from CIZ). Although Carboniferous zircon sources are also present in Newfoundland and Nova Scotia (Hutter & Beranek, 2020; Piper et al, 2012; and references therein) the prevailing Palaeozoic population is older (~420–400 Ma) in their Mesozoic basins. This population is preferentially linked with the collision of peri‐Gondwana terranes with Laurussia before the final amalgamation of Pangea (Dunning et al, 1990; Keppie & Krogh, 1999).…”

Section: Discussionmentioning

confidence: 99%

“…The regional abundance of Late Jurassic to Early Cretaceous zircons in the west Atlantic margin has been attributed to coeval volcanism (Hutter & Beranek, 2020; Lowe et al, 2011; Piper et al, 2012) as it coincides in age with the mildly alkalic to mildly tholeiitic basalts of Fogo Seamounts (Pe‐Piper et al, 2007). Similar Mesozoic magmatism is recognised in Iberia (Grange et al, 2008; Mata et al, 2015), but did not provide much zircon to LB deposits.…”

Section: Discussionmentioning

confidence: 99%

“…The absence of a trend for enrichment in younger ages in younger sedimentary units indicates that the exhumation of Carboniferous zircon sources are also present in Newfoundland and Nova Scotia (Hutter & Beranek, 2020;Piper et al, 2012;and references therein) the prevailing Palaeozoic population is older (~420-400 Ma) in their Mesozoic basins. This population is preferentially linked with the collision of peri-Gondwana terranes with Laurussia before the final amalgamation of Pangea (Dunning et al, 1990;Keppie & Krogh, 1999).…”

Section: A Detrital Zircon Age Frame For Iberia-newfoundland Margins ...mentioning

confidence: 99%

“… Note : (1) Dinis et al (2016); (2) Dinis et al (2021); (3) Pereira et al (2016); (4) Dinis et al (2018); Pereira et al (2017b); (6) Lowe et al (2011); (7) Beranek et al (2022); (8) Hutter and Beranek (2020); (9) Piper et al (2012). …”

Section: Introductionmentioning

confidence: 99%

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Detrital zircon age signatures of the Mesozoic in the Lusitanian Basin and implications for the evolution of Iberia–Newfoundland conjugate margins

2023

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New detrital zircon age results from the Lusitanian Basin are integrated with published data for the Mesozoic of west Iberia and eastern Canada (4959 concordant ages). Zircons in new samples are either mainly Devonian‐Permian, Cryogenian‐Ediacaran or reveal a combination of these two age populations, showing secondary to minor Mesoproterozoic‐Archean ages. Statistical tools applied to the compiled age data allow grouping the samples according to age signatures and explain main features of the age spectra. Age signatures are determined by the abundance of zircon: (1) recycled from terranes involved in Pangea amalgamation; (2) associated with Acadian‐Variscan crystalline rocks (~420–310 Ma), which becomes younger from the Laurentian to the Gondwanan sides of the orogen; (3) associated with post‐collisional events (~300–285 Ma) that affected different terranes and were exhumed in major structures controlling basin formation; and (4) resulting from Mesozoic magmatism (~145 Ma) with a stronger imprint in the west Atlantic margin.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: A Detrital Zircon Age Frame For Iberia-newfoundland Margins ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Detrital zircon age signatures of the Mesozoic in the Lusitanian Basin and implications for the evolution of Iberia–Newfoundland conjugate margins

2023

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“…Isotope ratios were measured using the laser-ablation split-stream method at Memorial University of Newfoundland following the procedures of Hutter and Beranek (2020). Zircon crystals were ablated with a GeoLas 193 nm excimer laser-ablation system using a 40 µm spot size, laser fluence of 5 J/cm 2 , pulse rate of 10 Hz, and 600 shots with a total analysis time of ~120 s (~30 s background measurement, ~60 s ablation, and ~30 s washout).…”

Section: Appendix Zircon U-pb Geochronology and Hf Isotope Geochemist...mentioning

confidence: 99%

Supplemental Material: Development of the Whitehorse trough as a strike-slip basin during Early to Middle Jurassic arc-continent collision in the Canadian Cordillera

Drecht¹,

al.²,

Beranek³

2022

Preprint

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The Variscan basement in the western shoulder of the Lusitanian Basin (West Iberian Margin): insights from detrital-zircon geochronology of Jurassic strata

et al. 2021

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There is no consensus about the geological nature of the westernmost portion 15 of the Iberian Massif. In the present research, the detrital zircon U-Pb signatures of 16 Jurassic strata of the Lusitanian Basin, known to be west-sourced, are combined with 17 published U-Pb data for the Precambrian-Palaeozoic basement and the Lusitanian Basin 18 units to better understand this poorly exposed portion of the Iberian Massif. Cryogenian to 19Ediacaran ages prevail in a northern Upper Jurassic unit, while Lower and Upper Jurassic 20 rocks in southern locations yield mostly Carboniferous to upper Permian zircons. These 21 age results, coupled with their respective U/Th ratios, suggest that the basin covers two 22 distinct terranes of the Iberian Massif. Another noteworthy feature of west-derived 23 deposits is the abundance of <310 Ma ages. It is proposed that a combination of crustal 24 thinning in the West Iberian Margin with regional eastward basement tilt, favoured the 25 enrichment of relatively young zircon in the western shoulder of the basin relative to its 26 eastern margin. The detrital zircon age signatures also reveal a middle to late Permian 27 thermal event in restricted areas, which is probably associated with the oldest stages of 28 Alpine extension in West Iberia.

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Provenance of Upper Jurassic to Lower Cretaceous synrift strata in the Terra Nova oil field, Jeanne d’Arc basin, offshore Newfoundland: A new detrital zircon U-Pb-Hf reference frame for the Atlantic Canadian margin

Cited by 7 publications

References 97 publications

Detrital zircon age signatures of the Mesozoic in the Lusitanian Basin and implications for the evolution of Iberia–Newfoundland conjugate margins

Detrital zircon age signatures of the Mesozoic in the Lusitanian Basin and implications for the evolution of Iberia–Newfoundland conjugate margins

Supplemental Material: Development of the Whitehorse trough as a strike-slip basin during Early to Middle Jurassic arc-continent collision in the Canadian Cordillera

The Variscan basement in the western shoulder of the Lusitanian Basin (West Iberian Margin): insights from detrital-zircon geochronology of Jurassic strata

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