gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2017-8-3-0298gtcrust-439Research ArticleПАЛЕОГЕОДИНАМИКАPALEOGEODYNAMICSDEPLETED SSZ TYPE MANTLE PERIDOTITES IN PROTEROZOIC EASTERN SAYAN OPHIOLITES IN SIBERIADEPLETED SSZ TYPE MANTLE PERIDOTITES IN PROTEROZOIC EASTERN SAYAN OPHIOLITES IN SIBERIAWangKuo-LungWangKuo-Lung

Taipei;

Department of Geosciences, Taipei

Taipei;

Department of Geosciences, Taipei

ChuZhuyinChuZhuyin

Beijing

Beijing

GornovaM. A.GornovaM. A.

Irkutsk

Irkutsk

DrilS.DrilS.

Irkutsk

Irkutsk

BelyaevV. A.BelyaevV. A.

Taipei;

Irkutsk

Taipei;

Irkutsk

LinKuan-YuLinKuan-Yu

Taipei;

Department of Geosciences, Taipei

Taipei;

Department of Geosciences, Taipei

O’ReillySuzanne Y.O’ReillyS. Y.

CCFS/GEMOC Key Centre, Department of Earth and Planetary Sciences, 

Sydney

CCFS/GEMOC Key Centre, Department of Earth and Planetary Sciences, 

Sydney

Institute of Earth Sciences, Academia Sinica; National Taiwan UniversityТайваньInstitute of Earth Sciences, Academia Sinica; National Taiwan UniversityTaiwan, Province of ChinaInstitute of Geology and Geophysics, Chinese Academy of SciencesКитайInstitute of Geology and Geophysics, Chinese Academy of SciencesChinaA.P. Vinogradov Institute of Geochemistry, Siberian Branch of RASРоссияA.P. Vinogradov Institute of Geochemistry, Siberian Branch of RASRussian FederationInstitute of Earth Sciences, Academia Sinica A.P. Vinogradov Institute of Geochemistry, Siberian Branch of RASТайваньInstitute of Earth Sciences, Academia Sinica; A.P. Vinogradov Institute of Geochemistry, Siberian Branch of RASTaiwan, Province of ChinaMacquarie UniversityАвстралияMacquarie UniversityAustralia20171410201783583587Copyright © Wang K., Chu Z., Gornova M.A., Dril S., Belyaev V.A., Lin K., O’Reilly S.Y., 20172017Wang K., Chu Z., Gornova M.A., Dril S., Belyaev V.A., Lin K., O’Reilly S.Wang K., Chu Z., Gornova M.A., Dril S., Belyaev V.A., Lin K., O’Reilly S.Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/439

N.L. Dobretsov et al. [1985] first described the rock complexes in Eastern Sayan as ophiolites. Ophiolites formed in Dunzhugur island arc and were obducted onto Gargan block, a Neoarchean crystalline basement of the Tuva-Mongolian Massif (TMM), as a single nappe [Khain et al., 2002; Kuzmichev, 2004]. Zircons from plagiogranite were dated at 1021±5 Ma by multigrain TIMS and 1020±1 Ma by Pb-Pb single-grains evaporation method [Khain et al., 2002]. Later [Kuzmichev, Larionov, 2013] analysed 12 grains of detrital zircons from gravelstone of the Dunzhugur formation and obtained 206Pb/238U ages from 844±8 to 1048±12 Ma. Careful examination of these data shows that 206Pb/238U ages for concordant zircons only vary from 962±11 to 1048±12 Ma.

N.L. Dobretsov et al. [1985] first described the rock complexes in Eastern Sayan as ophiolites. Ophiolites formed in Dunzhugur island arc and were obducted onto Gargan block, a Neoarchean crystalline basement of the Tuva-Mongolian Massif (TMM), as a single nappe [Khain et al., 2002; Kuzmichev, 2004]. Zircons from plagiogranite were dated at 1021±5 Ma by multigrain TIMS and 1020±1 Ma by Pb-Pb single-grains evaporation method [Khain et al., 2002]. Later [Kuzmichev, Larionov, 2013] analysed 12 grains of detrital zircons from gravelstone of the Dunzhugur formation and obtained 206Pb/238U ages from 844±8 to 1048±12 Ma. Careful examination of these data shows that 206Pb/238U ages for concordant zircons only vary from 962±11 to 1048±12 Ma.

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The authors declare that there are no conflicts of interest present.