Episodic Paleoproterozoic crustal growth preserved in the Aillik Domain, Makkovik Province, Labrador

Hinchey, Alana M.; Rayner, N M; Davis, W J

doi:10.1016/j.precamres.2019.105526

Cited by 14 publications

(21 citation statements)

References 40 publications

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“…3). The Big Island Shear Zone separates a region of northwest-verging folds and thrusts to the west, and contemporaneous upright to northeast-verging folds to the east (Culshaw et al, 2000b;Hinchey, 2013Hinchey, , 2007Hinchey et al, 2020). These shear zones accommodated shortening during the northwestward thrusting of the Aillik Group.…”

Section: Accepted Articlementioning

confidence: 99%

“…Suite 2 basalts formed early in the depositional history as they are more contaminated than subsequent pulses as represented by suite 1 basalts. Hinchey et al (2020) suggested that the basement to the Aillik Group was a juvenile Neoarchean/Paleoproterozoic continental crust. This is based on the ages of inherited zircon grains in felsic magmatic samples, largely ranging from 1921 -1883 Ma and with lesser Archean zircons (2.7-2.9 Ga), and in the detrital zircon from sandstone of the Aillik Group, with peaks dominated at 1860 Ma and 2525 Ma.…”

Section: Accepted Articlementioning

confidence: 99%

“…11E). This event occurred post-1848 Ma, based on the youngest age of felsic volcanism in the Aillik Group (Hinchey et al, 2020). Bagas et al (2020) suggested that the equivalent accretionary event in the Ketilidian orogeny coincided with the cessation of igneous activity of the JIC (the lateral equivalent to the Cape Harrison Arc) at ca.…”

Section: Accepted Articlementioning

confidence: 99%

“…2240 to 2130 Ma (Ketchum et al., 2001; Ketchum et al., 2001), but little evidence exists for the drift phase until the area became the locus of subduction, arc magmatism, and juvenile crustal accretion in an overall transpressional continental margin arc setting between ca. 1900 and 1790 Ma (Bagas et al., 2020; Garde et al., 2002; Hinchey et al., 2020; LaFlamme et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

“…1650–1640 Ma), and a package of reworked orthogneiss (1815‒1800 Ma Cape Harrison Metamorphic Suite; Figure 3; Hinchey et al., 2020, and references therein). The Adlavik Domain is interpreted to represent a rifted, composite arc (Hinchey et al., 2020, 2021b). Two major shear zones accommodate strain within the Adlavik domain, namely the Big Island Shear zone and the Pomiadluk Point Shear Zone (Figure 3).…”

Section: Introductionmentioning

confidence: 99%

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Localized Backarc Extension in an Overall Compressional Setting During the Assembly of Nuna: Geochemical and Isotopic Evidence From Orosirian (1883–1848 Ma) Mafic Magmatism of the Aillik Group, Labrador, Canada

Hinchey

2021

Earth and Space Science

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Protracted assembly of the Paleoproterozoic supercontinent Nuna resulted in localized extension in an overall compressional setting  Backarc settings produce geochemical and isotopic variability in mafic volcanic rocks that obscure understanding of their tectonic setting  Paleoproterozoic accretionary orogens comprise multiple diachronous, compressional and extensional events along a long-lived active margin Accepted ArticleThis article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

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Section: Accepted Articlementioning

confidence: 99%

Section: Accepted Articlementioning

confidence: 99%