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Ar-Ar geochronology and petrogenesis of the Mushgai–Khudag alkaline‑carbonatite complex (southern Mongolia). / Nikolenko, Anna M.; Doroshkevich, Anna G.; Ponomarchuk, Anton V. et al.

In: Lithos, Vol. 372-373, 105675, 01.11.2020.

Research output: Contribution to journal › Article › peer-review

Harvard

Nikolenko, AM, Doroshkevich, AG, Ponomarchuk, AV, Redina, AA, Prokopyev, IR, Vladykin, NV & Nikolaeva, IV 2020, 'Ar-Ar geochronology and petrogenesis of the Mushgai–Khudag alkaline‑carbonatite complex (southern Mongolia)', Lithos, vol. 372-373, 105675. https://doi.org/10.1016/j.lithos.2020.105675

APA

Nikolenko, A. M., Doroshkevich, A. G., Ponomarchuk, A. V., Redina, A. A., Prokopyev, I. R., Vladykin, N. V., & Nikolaeva, I. V. (2020). Ar-Ar geochronology and petrogenesis of the Mushgai–Khudag alkaline‑carbonatite complex (southern Mongolia). Lithos, 372-373, [105675]. https://doi.org/10.1016/j.lithos.2020.105675

Vancouver

Nikolenko AM, Doroshkevich AG, Ponomarchuk AV, Redina AA, Prokopyev IR, Vladykin NV et al. Ar-Ar geochronology and petrogenesis of the Mushgai–Khudag alkaline‑carbonatite complex (southern Mongolia). Lithos. 2020 Nov 1;372-373:105675. doi: 10.1016/j.lithos.2020.105675

Author

Nikolenko, Anna M. ; Doroshkevich, Anna G. ; Ponomarchuk, Anton V. et al. / Ar-Ar geochronology and petrogenesis of the Mushgai–Khudag alkaline‑carbonatite complex (southern Mongolia). In: Lithos. 2020 ; Vol. 372-373.

BibTeX

@article{0e5c387c8b4749868a573b609777ed99,
title = "Ar-Ar geochronology and petrogenesis of the Mushgai–Khudag alkaline‑carbonatite complex (southern Mongolia)",
abstract = "The Mushgai-Khudag alkaline‑carbonatite complex, located in southern Mongolia within the Central Asian Orogenic Belt (CAOB), comprises a broad range of volcanic and subvolcanic alkaline silicate rocks (melanephelinite-trachyte and shonkinite-alkaline syenite, respectively). Magnetite-apatite rocks, carbonatites, and fluorite mineralization are also manifested in this area. The complex formed between 145 and 133 Ma and is contemporaneous with late Mesozoic alkaline–carbonatite magmatism within the CAOB. Major and trace element characteristics of silicate rocks in the Mushgai-Khudag complex imply that these rocks were formed by the fractional crystallization of alkaline ultramafic parental magma. Magnetite-apatite rocks may be a product of silicate-Ca-Fe-P liquid immiscibility that took place during the alkaline syenite crystallization stage. The Mushgai-Khudag rocks have variable and moderately radiogenic Sr (87Sr/86Sr(i) = 0.70532–0.70614), ƐNd(t) = −1.23 to 1.25) isotopic compositions. LILE/HFSE values and Sr[sbnd]Nd isotope compositions indicate that the parental melts of Mushgai-Khudag were derived from a lithospheric mantle source that was affected by a metasomatic agent in the form a mixture of subducted oceanic crust and its sedimentary components. The δ18OSMOW and δ18CPDB values for calcites in carbonatites range from 16.8‰ to 19.2‰ and from −3.9‰ to 2.0‰, respectively. C[sbnd]O covariations in calcites of the Mushgai-Khudag carbonatites can be explained by the slight host limestone assimilation.",
keywords = "Alkaline‑carbonatite complexes, Central Asian Orogenic Belt, Late Mesozoic alkaline magmatism, Mantle sources, Petrogenesis, MANTLE PLUMES, IGNEOUS ROCKS, RUSSIA IMPLICATIONS, OXYGEN-ISOTOPE FRACTIONATION, VOLCANIC-ROCKS, Alkaline-carbonatite complexes, WESTERN TRANSBAIKALIA, CONSTRAINTS, GRANITOID MAGMATISM, MINERAL CHEMISTRY, ASIAN OROGENIC BELT",
author = "Nikolenko, {Anna M.} and Doroshkevich, {Anna G.} and Ponomarchuk, {Anton V.} and Redina, {Anna A.} and Prokopyev, {Ilya R.} and Vladykin, {Nikolay V.} and Nikolaeva, {Irina V.}",
note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2020",
month = nov,
day = "1",
doi = "10.1016/j.lithos.2020.105675",
language = "English",
volume = "372-373",
journal = "Lithos",
issn = "0024-4937",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Ar-Ar geochronology and petrogenesis of the Mushgai–Khudag alkaline‑carbonatite complex (southern Mongolia)

AU - Nikolenko, Anna M.

AU - Doroshkevich, Anna G.

AU - Ponomarchuk, Anton V.

AU - Redina, Anna A.

AU - Prokopyev, Ilya R.

AU - Vladykin, Nikolay V.

AU - Nikolaeva, Irina V.

N1 - Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/11/1

Y1 - 2020/11/1

N2 - The Mushgai-Khudag alkaline‑carbonatite complex, located in southern Mongolia within the Central Asian Orogenic Belt (CAOB), comprises a broad range of volcanic and subvolcanic alkaline silicate rocks (melanephelinite-trachyte and shonkinite-alkaline syenite, respectively). Magnetite-apatite rocks, carbonatites, and fluorite mineralization are also manifested in this area. The complex formed between 145 and 133 Ma and is contemporaneous with late Mesozoic alkaline–carbonatite magmatism within the CAOB. Major and trace element characteristics of silicate rocks in the Mushgai-Khudag complex imply that these rocks were formed by the fractional crystallization of alkaline ultramafic parental magma. Magnetite-apatite rocks may be a product of silicate-Ca-Fe-P liquid immiscibility that took place during the alkaline syenite crystallization stage. The Mushgai-Khudag rocks have variable and moderately radiogenic Sr (87Sr/86Sr(i) = 0.70532–0.70614), ƐNd(t) = −1.23 to 1.25) isotopic compositions. LILE/HFSE values and Sr[sbnd]Nd isotope compositions indicate that the parental melts of Mushgai-Khudag were derived from a lithospheric mantle source that was affected by a metasomatic agent in the form a mixture of subducted oceanic crust and its sedimentary components. The δ18OSMOW and δ18CPDB values for calcites in carbonatites range from 16.8‰ to 19.2‰ and from −3.9‰ to 2.0‰, respectively. C[sbnd]O covariations in calcites of the Mushgai-Khudag carbonatites can be explained by the slight host limestone assimilation.

AB - The Mushgai-Khudag alkaline‑carbonatite complex, located in southern Mongolia within the Central Asian Orogenic Belt (CAOB), comprises a broad range of volcanic and subvolcanic alkaline silicate rocks (melanephelinite-trachyte and shonkinite-alkaline syenite, respectively). Magnetite-apatite rocks, carbonatites, and fluorite mineralization are also manifested in this area. The complex formed between 145 and 133 Ma and is contemporaneous with late Mesozoic alkaline–carbonatite magmatism within the CAOB. Major and trace element characteristics of silicate rocks in the Mushgai-Khudag complex imply that these rocks were formed by the fractional crystallization of alkaline ultramafic parental magma. Magnetite-apatite rocks may be a product of silicate-Ca-Fe-P liquid immiscibility that took place during the alkaline syenite crystallization stage. The Mushgai-Khudag rocks have variable and moderately radiogenic Sr (87Sr/86Sr(i) = 0.70532–0.70614), ƐNd(t) = −1.23 to 1.25) isotopic compositions. LILE/HFSE values and Sr[sbnd]Nd isotope compositions indicate that the parental melts of Mushgai-Khudag were derived from a lithospheric mantle source that was affected by a metasomatic agent in the form a mixture of subducted oceanic crust and its sedimentary components. The δ18OSMOW and δ18CPDB values for calcites in carbonatites range from 16.8‰ to 19.2‰ and from −3.9‰ to 2.0‰, respectively. C[sbnd]O covariations in calcites of the Mushgai-Khudag carbonatites can be explained by the slight host limestone assimilation.

KW - Alkaline‑carbonatite complexes

KW - Central Asian Orogenic Belt

KW - Late Mesozoic alkaline magmatism

KW - Mantle sources

KW - Petrogenesis

KW - MANTLE PLUMES

KW - IGNEOUS ROCKS

KW - RUSSIA IMPLICATIONS

KW - OXYGEN-ISOTOPE FRACTIONATION

KW - VOLCANIC-ROCKS

KW - Alkaline-carbonatite complexes

KW - WESTERN TRANSBAIKALIA

KW - CONSTRAINTS

KW - GRANITOID MAGMATISM

KW - MINERAL CHEMISTRY

KW - ASIAN OROGENIC BELT

UR - http://www.scopus.com/inward/record.url?scp=85088009442&partnerID=8YFLogxK

U2 - 10.1016/j.lithos.2020.105675

DO - 10.1016/j.lithos.2020.105675

M3 - Article

AN - SCOPUS:85088009442

VL - 372-373

JO - Lithos

JF - Lithos

SN - 0024-4937

M1 - 105675

ER -

ID: 24782803