The supra-ophiolitic sedimentary cover of the Asbestos ophiolite, Québec, Canada: First geochemical evidence of transition from oceanic to continental sediment flux

Bédard, Émilie; Hébert, Réjean; Guilmette, Carl; Dostál, J.

doi:10.1016/j.lithos.2008.04.005

Cited by 7 publications

(2 citation statements)

References 44 publications

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“…Sedimentary rocks generally preserve crucial information to unravel source of the detrital material and depositional environment (Bédard et al., 2008), and could provide significant insights into the evolutionary process and tectonic affinity of Precambrian metamorphic basements located in the ancient craton, in particular (Jiang et al., 2016; Lin et al., 2013; Taylor & McLennan, 1985; Y. Zhao et al., 2019). Zircon is one specific mineral that could resist chemical and mechanical alteration during the late metamorphic, erosional and transportation processes (Rubatto, 2002; Y.…”

Section: Introductionmentioning

confidence: 99%

Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

Jiang

Peng

Wang

2022

Earth and Space Science

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The Kongling terrane (Huangling dome) outcrops Precambrian metamorphic basement of the Yangtze craton. However, the Precambrian tectonic evolution of the southern Kongling terrane remains poorly constrained. In this contribution, we report zircon geochronology of the metasedimentary rocks from southern Kongling terrane of the Yangtze craton. Zircon U‐Pb dating results yielded magmatic age clusters at ca. 3,000 Ma, ca. 1,520 Ma, ca. 1,150 Ma, ca. 860 Ma, 900–920 Ma, and 980 Ma, and metamorphic age at ca. 2,900 Ma. These data display that the southern Kongling terrane witnessed Mesoarchean magmatism and metamorphic event, Mesoproterozoic and Neoproterozoic magmatism. In combination with previous studies, it is proposed that the Precambrian metamorphic basement of the Yangtze craton was amalgamated by the multi‐stage subduction‐collision processes at ca. 3,000–2,900 Ma, ca. 2,000–1,800 Ma, and ca. 1,100–940 Ma. In addition, the Proterozoic processes were related to the assembly and breakup of Columbia and Rodinia supercontinents.

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Section: Introductionmentioning

confidence: 99%

Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

Jiang

Peng

Wang

2022

Earth and Space Science

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“…The application of the latter technique (especially to fine-grained sediments) has proven a robust tool in constraining provenance (e.g. Gallet et al, 1998;Owen et al, 1999;Toulkeridis et al, 1999;Hofmann et al, 2003;Bolhar et al, 2005;Bracciali et al, 2007;B edard et al, 2008;Chavagnac et al, 2008;Dou et al, 2010;Baldwin et al, 2011;Li et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

A snapshot of the Late Jurassic Western Tethys seafloor composition and morphology provided by the geochemistry of pelitic sediments (Corsica, Central Alps and Northern Apennines)

2013

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The chemical composition of fine-grained siliciclastic sediments is a powerful tool in provenance studies, either as a complement to other whole rock/single grain methods, or as a stand-alone method when other techniques are not applicable, and particularly in those cases where the coarser sediment fractions are not available or the regional-scale geologic framework is lost due major successive tectonic events. A comprehensive geochemical investigation of pelites from the post-rift deposits of the Ligurian-Piedmont ocean (sampled in tectonic units of the Alpine-Apennine orogen: Balagne Nappe, Corsica; Tuscan Nappe and Internal Ligurian units, Northern Apennines; Err-Platta units, Central Alps) has identified for the first time a major mafic-ultramafic input immediately following rifting. Key trace element ratios (e.g., LaN/YbN < 10; avg. Eu/Eu* = 0.73 ± 0.06, 1SD; Th/(Cr + Ni +V) < 0.03) show that the pelitic siliciclastic layers intercalated in the Radiolarite formation (the first post-rift deposits) are systematically enriched in a mafic-ultramafic source component as compared to the younger post rift sediments (Calpionella Limestone and Palombini Shale). Such a peculiar chemical fingerprint is interpreted as the result of erosion and distribution across the whole basin (even to continental domains) of intraoceanic ophiolitic debris by turbidity and bottom currents sweeping the sea floor at the time of deposition of the Radiolarite Formation. Exhumed mantle and gabbroic-basaltic rocks exposed at the morphologically articulated seafloor of the slow-spreading Ligurian-Piedmont ocean were available to erosion during the whole time-span of the deposition of the Radiolarite formation, whilst they became progressivey subordinate as a source as the basin floor was progressively covered by the siliciclastic input from the developing passive continental margins

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Post-emplacement history of the Zambales Ophiolite Complex: Insights from petrography, geochronology and geochemistry of Neogene clastic rocks

Dimalanta

Salapare

Faustino-Eslava

et al. 2015

Journal of Asian Earth Sciences

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The supra-ophiolitic sedimentary cover of the Asbestos ophiolite, Québec, Canada: First geochemical evidence of transition from oceanic to continental sediment flux

Cited by 7 publications

References 44 publications

Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

Precambrian Tectonic Evolution of Southern Kongling Terrane, Yangtze Craton: Constraint From the Detrital Zircon U‐Pb Geochronology of the Metasedimentary Rocks

A snapshot of the Late Jurassic Western Tethys seafloor composition and morphology provided by the geochemistry of pelitic sediments (Corsica, Central Alps and Northern Apennines)

Post-emplacement history of the Zambales Ophiolite Complex: Insights from petrography, geochronology and geochemistry of Neogene clastic rocks

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