Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
The overmaraat-gol alkaline pluton in northern mongolia : U–Pb age and preliminary implications for magma sources and tectonic setting. / Vrublevskii, Vassily V.; Gertner, Igor F.; Ernst, Richard E. и др.
в: Minerals, Том 9, № 3, 170, 10.03.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - The overmaraat-gol alkaline pluton in northern mongolia
T2 - U–Pb age and preliminary implications for magma sources and tectonic setting
AU - Vrublevskii, Vassily V.
AU - Gertner, Igor F.
AU - Ernst, Richard E.
AU - Izokh, Andrey E.
AU - Vishnevskii, Andrey V.
N1 - Publisher Copyright: © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2019/3/10
Y1 - 2019/3/10
N2 - A new Wenlockian zircon U–Pb age (~426 Ma) of the Overmaraat-Gol nepheline syenite (foyaite, juvite) pluton in the SW Lake Hovsgol area (Northern Mongolia) prompts a long history of alkaline magmatism in the western Central Asian Orogenic Belt, exceeding the duration of the Devonian and Permian–Triassic events. The LILE and HFSE patterns of pluton samples analyzed by X-ray fluorescence (XRF) and inductively coupled plasma (ICP-MS) methods indicate intrusion in a complex tectonic setting during interaction of a mantle plume with accretionary-collisional complexes that previously formed on the active continental margin. As a result, the parent magma had a heterogeneous source with mixed mantle (PREMA and EM) and crustal components. This source composition is consistent with Nd–Sr isotope ratios of the Overmaraat-Gol alkaline rocks, from −0.1 to −1.2 ε Nd (t) and from ~0.706 to 0.707 87 Sr/ 86 Sr(t).
AB - A new Wenlockian zircon U–Pb age (~426 Ma) of the Overmaraat-Gol nepheline syenite (foyaite, juvite) pluton in the SW Lake Hovsgol area (Northern Mongolia) prompts a long history of alkaline magmatism in the western Central Asian Orogenic Belt, exceeding the duration of the Devonian and Permian–Triassic events. The LILE and HFSE patterns of pluton samples analyzed by X-ray fluorescence (XRF) and inductively coupled plasma (ICP-MS) methods indicate intrusion in a complex tectonic setting during interaction of a mantle plume with accretionary-collisional complexes that previously formed on the active continental margin. As a result, the parent magma had a heterogeneous source with mixed mantle (PREMA and EM) and crustal components. This source composition is consistent with Nd–Sr isotope ratios of the Overmaraat-Gol alkaline rocks, from −0.1 to −1.2 ε Nd (t) and from ~0.706 to 0.707 87 Sr/ 86 Sr(t).
KW - Alkaline magmatism
KW - Central Asian Orogenic Belt
KW - Geochemistry
KW - Northern Mongolia
KW - Plume-lithosphere interaction
KW - U-Pb isotope geochronology
KW - MANTLE PLUMES
KW - ND ISOTOPE EVIDENCE
KW - plume-lithosphere interaction
KW - geochemistry
KW - ALTAI
KW - ROCKS
KW - KUZNETSK-ALATAU
KW - TRACE-ELEMENT
KW - MAJOR-ELEMENT
KW - CARBONATITES
KW - alkaline magmatism
KW - SM-ND
KW - SR
UR - http://www.scopus.com/inward/record.url?scp=85063637444&partnerID=8YFLogxK
U2 - 10.3390/min9030170
DO - 10.3390/min9030170
M3 - Article
AN - SCOPUS:85063637444
VL - 9
JO - Minerals
JF - Minerals
SN - 2075-163X
IS - 3
M1 - 170
ER -
ID: 19038843