Textures and geochemistry of the Saramta peridotites (Siberian craton): Melting and refertilization during early evolution of the continental lithospheric mantle

Gornova, M. A.; Belyaev, V. A.; Belozerova, O. Yu.

doi:10.1016/j.jseaes.2012.10.004

Cited by 7 publications

(3 citation statements)

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“…Such a kind of refertilization changes the geochemical composition and properties (e.g., buoyancy, rheological strength, etc.) of the lower part of the subcontinental lithospheric mantle, resulting in a change in the rheological property of the reworked (Doucet et al, 2012;Gornova et al, 2013;Tang, Zhang, Ying, & Su, 2013 and references therein;Howarth et al, 2014;Lin et al, 2019;Xiao et al, 2013;Yang et al, 2018;Zou et al, 2016). Bold lines labeled with squares, initial melting pressures in GPa; light lines labeled with circles, final melting pressures in GPa; brown shaded area, compositions of residual harzburgite designated as (L + Ol + Opx) after melting of lherzolite (Herzberg, 2004).…”

Section: Reworking Of Subcontinental Lithospheric Mantlementioning

confidence: 99%

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Origin, Accretion, and Reworking of Continents

Zhu

Zhao

Xiao

et al. 2021

Reviews of Geophysics

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Archean continental nuclei likely originated from oceanic plateaus formed by mantle plumes, not from island arcs via oceanic subduction Archean continental nuclei underwent accretion or growth at margins by oceanic subduction, involving juvenile arc formation and accretion Continental reworking occurs ubiquitously, with significant reworking/craton destruction being mainly associated with oceanic subduction 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: Reworking Of Subcontinental Lithospheric Mantlementioning

confidence: 99%

“…SiO2 and MgO contents of peridotites in the global continental lithospheric mantle. Data sources: Peridotite xenoliths in kimberlites and basalts(Doucet et al, 2012;Gornova et al, 2013; Tang, Zhang, Ying, & Su, 2013 and references therein;Howarth et al,…”

mentioning

confidence: 99%

Origin, Accretion, and Reworking of Continents

Zhu

Zhao

Xiao

et al. 2021

Reviews of Geophysics

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“…Примеры выведенной на поверхность литосферной мантии Шарыжалгайского террейна [Gornova et al, 2013] показывают, что даже на уровне шпинелевой фации мантия была существенно метасоматизирована.…”

Section: слоистость литосферыunclassified

Mantle Terranes of the Siberian Craton: Their Interaction With Plume Melts Based on Thermobarometry and Geochemistry of Mantle Xenocrysts

Ashchepkov

Ivanov²,

Kostrovitsky

et al. 2019

Geodin. tektonofiz.

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We have studied variations in the structure and composition of minerals from the pipes of the Yakutian kimberlite province (YKP) in different mantle terranes of the Siberian craton. The study was based on an extensive database, including the microprobe analysis datasets consolidated by IGM, IG, IEC and IGDNM SB RAS and ALROSA and geochemical analysis of minerals performed by LA-ICP-MS (Laser Ablation Inductively Coupled Plasma Mass Spectrometry). The reconstruction shows layering under the tubes, including 6-7 slab that were probably formed due to subduction; the slabs are separated by pyroxenitic, eclogitic and metasomatic layers and dunite lenses. Transects and mantle profiles across kimberlite fields are constructed. Within the limits of the revealed tectonic terranes, we assume a collage of microplates formed in the early-middle Archean. Extended submeridional structures of the tectonic terranes are not always confirmed at the mantle level. Beneath the Anabar and Aldan shields, the mantle sections show more coarse layers and 3-4 large horizons of dunites with garnet and pyroxene nests separated by ilmenite-phlogopite metasomatites and pyroxenites. Terranes representing the suture zones between the protocratons (e.g. Khapchan) are often saturated with eclogites and pyroxenites that may occur as leghthy ascending bodies of magmatic eclogites penetrating through the mantle lithosphere structure (ML). A nearly ubiquitous pyroxenite layer at the level of 3.5-4.5 GPa formed probably in the early Archean with a high heat flux during melting of eclogites and was subsequently traced by plume melts. Within the early Archean protocratons-granite-greenstone terranes (Tungus, Markha, Berekta, and Sharyzhalgai, ~3.8-3.0 Gyr [Gladkochub et al., 2019], the mantle lithosphere is less depleted and largely metasomatized. The ML structure of the Daldyn and Magan granulite-orthogneiss terranes is layered with folding revealed in the north-to-south sections from the Udachnaya pipe to the Krasnopresnenskaya pipe, which is less pronounced in the latitudinal direction. From the Daldyn field to the Alakit field, there is an increase in the degree of metasomatism, and higher alkalinity of pyroxenes and larger amounts of phlogopite are noted. The most productive Aikhal and Yubileinaya pipes are confined to a dunite core, which is accompanied by a change in the specialization of high-charge elements Ta-Nb to Zr-Hf. Within the limits of the Magan terrane, the thin-layer structure of the middle GEODYNAMICS & TECTONOPHYSICS

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