Autochthonous crustal growth and sedimentation in the Superior Province recorded by xenocrystic and detrital zircon

IF 2.7 2区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Precambrian Research Pub Date : 2026-02-01 Epub Date: 2025-12-05 DOI:10.1016/j.precamres.2025.107980

J.W.D. Strong , A.R. Cruden , P.A. Cawood , X. Wang , P. Hollings , D. Li , K. Ross , A.J.M. Lalonde , J. Marsh , J.M. Simmons

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引用次数: 0

Abstract

Analysis of U-Pb/Lu-Hf isotopes in zircon populations from plutonic orthogneisses and metasedimentary rocks are used to constrain the Paleoarchean to Neoarchean tectonic processes that led to Neoarchean cratonization of the western Superior Province. Plutonic orthogneisses from the North Caribou and western Wabigoon terranes assimilated varying degrees of Paleoarchean to Mesoarchean protoliths in the form of xenocrystic zircon, which indicate that the dominantly juvenile Neoarchean western Wabigoon and juvenile Mesoarchean to Neoarchean North Caribou terranes formed in association with an older Paleoarchean to Mesoarchean crustal basement. In addition, metasedimentary rocks from the North Caribou, English River, Winnipeg River, Wabigoon and Quetico terranes have detrital zircon age spectra and Hf(t) isotope compositions indicating ubiquitous availability of similar sedimentary sources across the western Superior Province during the Neoarchean. Collectively, the xenocrystic and detrital zircon evidence from the western Superior Province supports autochthonous growth of all terranes while the Neoarchean pre/syn-tectonic basins accepted detritus from widely available Mesoarchean to Neoarchean sources.

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由异晶锆石和碎屑锆石记录的苏必利尔省原生地壳生长和沉积

通过对深深正长岩和变质沉积岩中锆石群U-Pb/Lu-Hf同位素的分析，确定了古太古代至新太古代的构造过程，这些构造过程导致了西苏伯利尔省新太古代的克拉通化。北加勒比和西瓦比古陆体的深成正异性以异晶锆石的形式不同程度地同化了古太古代至中太古代的原岩，表明西瓦比古陆体和中太古代至新太古代的北加勒比陆体主要形成于古太古代至中太古代的地壳基底。此外，来自North Caribou、English River、Winnipeg River、Wabigoon和Quetico地体的变质沉积岩具有碎屑锆石年龄谱和Hf(t)同位素组成，表明新太古代苏必利尔省西部普遍存在类似的沉积源。总的来说，来自苏利伯尔省西部的异晶锆石和碎屑锆石证据支持所有地体的原生生长，而新太古代前/同构造盆地则接受了广泛存在的中太古宙至新太古代的碎屑。

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来源期刊

Precambrian Research 地学-地球科学综合

CiteScore

7.20

自引率

28.90%

发文量

325

审稿时长

12 months

期刊介绍： Precambrian Research publishes studies on all aspects of the early stages of the composition, structure and evolution of the Earth and its planetary neighbours. With a focus on process-oriented and comparative studies, it covers, but is not restricted to, subjects such as: (1) Chemical, biological, biochemical and cosmochemical evolution; the origin of life; the evolution of the oceans and atmosphere; the early fossil record; palaeobiology; (2) Geochronology and isotope and elemental geochemistry; (3) Precambrian mineral deposits; (4) Geophysical aspects of the early Earth and Precambrian terrains; (5) Nature, formation and evolution of the Precambrian lithosphere and mantle including magmatic, depositional, metamorphic and tectonic processes. In addition, the editors particularly welcome integrated process-oriented studies that involve a combination of the above fields and comparative studies that demonstrate the effect of Precambrian evolution on Phanerozoic earth system processes. Regional and localised studies of Precambrian phenomena are considered appropriate only when the detail and quality allow illustration of a wider process, or when significant gaps in basic knowledge of a particular area can be filled.