U–Pb ID-TIMS Age of Rutile from the North Muya Block Eclogites (Northeastern Transbaikal Area) as a Tracer of the Duration for Exhumation of the Continental Lithosphere

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U–Pb ID-TIMS Age of Rutile from the North Muya Block Eclogites (Northeastern Transbaikal Area) as a Tracer of the Duration for Exhumation of the Continental Lithosphere. / Skuzovatov, S. Yu; Rizvanova, N. G.; Skublov, S. G. и др.

в: Doklady Earth Sciences, Том 512, № 1, 09.2023, стр. 810-818.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{d30687be42d845269a7cfa135fe0df7b,

title = "U–Pb ID-TIMS Age of Rutile from the North Muya Block Eclogites (Northeastern Transbaikal Area) as a Tracer of the Duration for Exhumation of the Continental Lithosphere",

abstract = "Rutile, an abundant mineral phase of high-grade rocks, is used as a tracer of lithospheric evolution for deep zones of orogenic belts. This study presents new ID-TIMS U–Pb geochronological, mineralogical, and geochemical data for rutile from eclogites of the North Muya block (Baikal–Muya fold belt) in order to examine the applicability of its age estimates relative to the exhumation process of high-grade rocks. The assemblage of mineral inclusions in rutile (mainly titanite, epidote, and amphibole) indicate rutile growth through titanite breakdown reactions during prograde metamorphism epidote–amphibolite or amphibolite–facies rocks. The range of Zr contents and estimated Zr-in-rutile crystallization temperatures correspond to conditions from prograde (619–638°С at 1.5 GPa) up to peak ones (659–684°С for 2.5 GPa). The U–Pb age estimate (605 Ma) is notably younger than that of peak eclogitic metamorphism (630 Ma) and highlight the protracted cooling history of the eclogite-bearing complex during its evolution below the closure temperature of the U–Pb isotope system in rutile (~500–525°С) during tectonic denudation or erosion of continental complexes.",

keywords = "Baikal–Muya fold belt, Central Asian Orogenic Belt, ID-TIMS U–Pb geochronology, eclogites, lithospheric exhumation, rutile",

author = "Skuzovatov, {S. Yu} and Rizvanova, {N. G.} and Skublov, {S. G.} and Shatsky, {V. S.}",

note = "This work was supported by the Russian Science Foundation, project no. 21-77-10038. Публикация для корректировки.",

year = "2023",

month = sep,

doi = "10.1134/S1028334X23601049",

language = "English",

volume = "512",

pages = "810--818",

journal = "Doklady Earth Sciences",

issn = "1028-334X",

publisher = "PLEIADES PUBLISHING INC",

number = "1",

}

RIS

TY - JOUR

T1 - U–Pb ID-TIMS Age of Rutile from the North Muya Block Eclogites (Northeastern Transbaikal Area) as a Tracer of the Duration for Exhumation of the Continental Lithosphere

AU - Skuzovatov, S. Yu

AU - Rizvanova, N. G.

AU - Skublov, S. G.

AU - Shatsky, V. S.

N1 - This work was supported by the Russian Science Foundation, project no. 21-77-10038. Публикация для корректировки.

PY - 2023/9

Y1 - 2023/9

N2 - Rutile, an abundant mineral phase of high-grade rocks, is used as a tracer of lithospheric evolution for deep zones of orogenic belts. This study presents new ID-TIMS U–Pb geochronological, mineralogical, and geochemical data for rutile from eclogites of the North Muya block (Baikal–Muya fold belt) in order to examine the applicability of its age estimates relative to the exhumation process of high-grade rocks. The assemblage of mineral inclusions in rutile (mainly titanite, epidote, and amphibole) indicate rutile growth through titanite breakdown reactions during prograde metamorphism epidote–amphibolite or amphibolite–facies rocks. The range of Zr contents and estimated Zr-in-rutile crystallization temperatures correspond to conditions from prograde (619–638°С at 1.5 GPa) up to peak ones (659–684°С for 2.5 GPa). The U–Pb age estimate (605 Ma) is notably younger than that of peak eclogitic metamorphism (630 Ma) and highlight the protracted cooling history of the eclogite-bearing complex during its evolution below the closure temperature of the U–Pb isotope system in rutile (~500–525°С) during tectonic denudation or erosion of continental complexes.

AB - Rutile, an abundant mineral phase of high-grade rocks, is used as a tracer of lithospheric evolution for deep zones of orogenic belts. This study presents new ID-TIMS U–Pb geochronological, mineralogical, and geochemical data for rutile from eclogites of the North Muya block (Baikal–Muya fold belt) in order to examine the applicability of its age estimates relative to the exhumation process of high-grade rocks. The assemblage of mineral inclusions in rutile (mainly titanite, epidote, and amphibole) indicate rutile growth through titanite breakdown reactions during prograde metamorphism epidote–amphibolite or amphibolite–facies rocks. The range of Zr contents and estimated Zr-in-rutile crystallization temperatures correspond to conditions from prograde (619–638°С at 1.5 GPa) up to peak ones (659–684°С for 2.5 GPa). The U–Pb age estimate (605 Ma) is notably younger than that of peak eclogitic metamorphism (630 Ma) and highlight the protracted cooling history of the eclogite-bearing complex during its evolution below the closure temperature of the U–Pb isotope system in rutile (~500–525°С) during tectonic denudation or erosion of continental complexes.

KW - Baikal–Muya fold belt

KW - Central Asian Orogenic Belt

KW - ID-TIMS U–Pb geochronology

KW - eclogites

KW - lithospheric exhumation

KW - rutile

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85165177511&origin=inward&txGid=e1f0bdb072e8f8ccea67c80b19d36d37

UR - https://www.mendeley.com/catalogue/5c68ecf3-ac0a-3477-a074-dcfacad8af2d/

U2 - 10.1134/S1028334X23601049

DO - 10.1134/S1028334X23601049

M3 - Article

VL - 512

SP - 810

EP - 818

JO - Doklady Earth Sciences

JF - Doklady Earth Sciences

SN - 1028-334X

IS - 1

ER -

ID: 59265310