gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2021-12-3-0545gtcrust-1246Research ArticleДИСКУССИЯDISCUSSIONОТВЕТ НА КОММЕНТАРИИ К СТАТЬЕ М.В. МИНЦА И К.А. ДОКУКИНОЙ «СУБДУКЦИОННЫЕ ЭКЛОГИТЫ БЕЛОМОРСКОЙ ЭКЛОГИТОВОЙ ПРОВИНЦИИ (ВОСТОК ФЕННОСКАНДИНАВСКОГО ЩИТА, РОССИЯ): МЕЗОАРХЕЙ, НЕОАРХЕЙ ИЛИ ПОЗДНИЙ ПАЛЕОПРОТЕРОЗОЙ?» (С.Г. СКУБЛОВ, А.В. БЕРЕЗИН, Л.И. САЛИМГАРАЕВА)REPLY TO COMMENTS FROM S.G. SKUBLOV, A.V. BEREZIN, AND L.I. SALIMGARAEVA ON THE ARTICLE AUTHORED BY M.V. MINTS AND K.A. DOKUKINA – THE BELOMORIAN ECLOGITE PROVINCE (EASTERN FENNOSCANDIAN SHIELD, RUSSIA): MESO-NEOARCHEAN OR LATE PALEOPROTEROZOIC?МинцМ. В.MintsM. V.

119017, Москва, Пыжевский пер., 7

7 Pyzhevsky Ln, Moscow 119017

michael-mints@yandex.ruДокукинаК. А.DokukinaK. A.

119017, Москва, Пыжевский пер., 7

7 Pyzhevsky Ln, Moscow 119017

Геологический институт РАНРоссияGeological Institute, Russian Academy of SciencesRussian Federation202117092021123662667Copyright © Минц М.В., Докукина К.А., 20212021Минц М.В., Докукина К.А.Mints M.V., Dokukina K.A.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/1246

Авторы Комментариев, определив в качестве главного объекта своего исследования позднепалеопротерозойские каймы цирконов, проигнорировали многие важные детали ими же полученных данных. Комментарии базируются на ложной идее, будто бы эклогитовые цирконы обладают уникальными геохимическими (REE, Th/U) и изотопными (Lu-Hf, δ18O) характеристиками, которые не зависят от типа породы и высокого или сверхвысокого давления при метаморфизме, что позволяет однозначно датировать эклогитовый метаморфизм по единичным образцам.

In their research, the authors of the comments have focused on the Late Paleoproterozoic rims of zircons, but ignored many important details of their own data. Their comments are based on a misconception that eclogite zircons have unique geochemical (REE, Th/U) and isotopic (Lu-Hf, δ18O) characteristics that do not depend on rock types and pressure rates (that were high or ultrahigh) during metamorphism. This idea leads to false unambiguous dating of the eclogite facies metamorphism based on single samples of the rocks.

ReferencesAngiboust S., Harlov D.E., 2017. Ilmenite Breakdown and Rutile-Titanite Stability in Metagranitoids: Natural Observations and Experimental Results. American Mineralogist 102 (8), 1696–1708. https://doi.org/10.2138/am-2017-6064.Angiboust S., Harlov D.E., 2017. Ilmenite Breakdown and Rutile-Titanite Stability in Metagranitoids: Natural Observations and Experimental Results. American Mineralogist 102 (8), 1696–1708. https://doi.org/10.2138/am-2017-6064.Henderson P., 1980. Rare Earth Element Partition between Sphene, Apatite and Other Coexisting Minerals of the Kangerdlugssuaq Intrusion, E. Greenland. Contributions to Mineralogy and Petrology 72 (1), 81–85. https://doi.org/10.1007/BF00375570.Henderson P., 1980. Rare Earth Element Partition between Sphene, Apatite and Other Coexisting Minerals of the Kangerdlugssuaq Intrusion, E. Greenland. Contributions to Mineralogy and Petrology 72 (1), 81–85. https://doi.org/10.1007/BF00375570.Herwartz D., Skublov S.G., Berezin A.V., Mel’nik A.E., 2012. First Lu-Hf Garnet Ages of Eclogites from the Belomorian Mobile Belt (Baltic Shield, Russia). Doklady Earth Sciences 443 (1), 377–380. https://doi.org/10.1134/S1028334X12030130.Herwartz D., Skublov S.G., Berezin A.V., Mel’nik A.E., 2012. First Lu-Hf Garnet Ages of Eclogites from the Belomorian Mobile Belt (Baltic Shield, Russia). Doklady Earth Sciences 443 (1), 377–380. https://doi.org/10.1134/S1028334X12030130.Hoskin P.W.O., Schaltegger U., 2003. The Composition of Zircon and Igneous and Metamorphic Petrogenesis. Reviews in Mineralogy and Geochemistry 53, 27–62. https://doi.org/10.2113/0530027.Hoskin P.W.O., Schaltegger U., 2003. The Composition of Zircon and Igneous and Metamorphic Petrogenesis. Reviews in Mineralogy and Geochemistry 53, 27–62. https://doi.org/10.2113/0530027.Korzhinsky D.S., 1955. Essay on Metasomatic Processes. In: A.G. Betekhtin (Ed.), Basic Problems in Studies of Magmatogenic Ore Deposits. Publishing House of the USSR Academy of Science, p. 335–456 (in Russian) [Коржинский Д.С. Очерк метасоматических процессов // Основные проблемы в учении о магматогенных рудных месторождениях / Ред. А.Г. Бетехтин. М.: Изд-во АН СССР, 1955. С. 335–456].Korzhinsky D.S., 1955. Essay on Metasomatic Processes. In: A.G. Betekhtin (Ed.), Basic Problems in Studies of Magmatogenic Ore Deposits. Publishing House of the USSR Academy of Science, p. 335–456 (in Russian) [Коржинский Д.С. Очерк метасоматических процессов // Основные проблемы в учении о магматогенных рудных месторождениях / Ред. А.Г. Бетехтин. М.: Изд-во АН СССР, 1955. С. 335–456].Kostitsyn Yu.A., 2019. Work Program of the Discipline "Geochemistry of Isotopes and Geochronology". Faculty of Geology, MSU, Moscow, 12 p. (in Russian) [Костицын Ю.А. Рабочая программа дисциплины «Геохимия изотопов и геохронология». М.: Геологический факультет МГУ им. М.В. Ломоносова, 2019. 12 с.].Kostitsyn Yu.A., 2019. Work Program of the Discipline "Geochemistry of Isotopes and Geochronology". Faculty of Geology, MSU, Moscow, 12 p. (in Russian) [Костицын Ю.А. Рабочая программа дисциплины «Геохимия изотопов и геохронология». М.: Геологический факультет МГУ им. М.В. Ломоносова, 2019. 12 с.].Marks M.A.W., Coulson I.M., Schilling J., Jacob D.E., Schmitt A.K., Markl G., 2008. The Effect of Titanite and Other HFSE-Rich Mineral (Ti-Bearing Andradite, Zircon, Eudialyte) Fractionation on the Geochemical Evolution of Silicate Melts. Chemical Geology 257 (1–2), 153–172. https://doi.org/10.1016/j.chemgeo.2008.09.002.Marks M.A.W., Coulson I.M., Schilling J., Jacob D.E., Schmitt A.K., Markl G., 2008. The Effect of Titanite and Other HFSE-Rich Mineral (Ti-Bearing Andradite, Zircon, Eudialyte) Fractionation on the Geochemical Evolution of Silicate Melts. Chemical Geology 257 (1–2), 153–172. https://doi.org/10.1016/j.chemgeo.2008.09.002.Mints M.V., Dokukina K.A., 2020a. The Belomorian Eclogite Province (Eastern Fennoscandian Shield, Russia): Meso-Neoarchean or Late Paleoproterozoic? Geodynamics & Tectonophysics 11 (1), 151–200 (in Russian) [Минц М.В., Докукина К.А. Субдукционные эклогиты Беломорской эклогитовой провинции (восток Фенноскандинавского щита, Россия): мезоархей, неоархей или поздний палеопротерозой? // Геодинамика и тектонофизика. 2020. Т. 11. № 1. С. 151–200]. https://doi.org/10.5800/GT-2020-11-1-0469.Mints M.V., Dokukina K.A., 2020a. The Belomorian Eclogite Province (Eastern Fennoscandian Shield, Russia): Meso-Neoarchean or Late Paleoproterozoic? Geodynamics & Tectonophysics 11 (1), 151–200 (in Russian) [Минц М.В., Докукина К.А. Субдукционные эклогиты Беломорской эклогитовой провинции (восток Фенноскандинавского щита, Россия): мезоархей, неоархей или поздний палеопротерозой? // Геодинамика и тектонофизика. 2020. Т. 11. № 1. С. 151–200]. https://doi.org/10.5800/GT-2020-11-1-0469.Mints M.V., Dokukina K.A., 2020b. Age of Eclogites Formed by the Subduction of the Mesoarchaean Oceanic Crust (Salma, Belomorian Eclogite Province, Kola Peninsula, Russia): A Synthesis. Precambrian Research 350, 105879. https://doi.org/10.1016/j.precamres.2020.105879.Mints M.V., Dokukina K.A., 2020b. Age of Eclogites Formed by the Subduction of the Mesoarchaean Oceanic Crust (Salma, Belomorian Eclogite Province, Kola Peninsula, Russia): A Synthesis. Precambrian Research 350, 105879. https://doi.org/10.1016/j.precamres.2020.105879.Mints M.V., Dokukina K.A., Konilov A.N., 2014. The Meso-Neoarchaean Belomorian Eclogite Province: Tectonic Position and Geodynamic Evolution. Gondwana Research 25 (2), 561–584. https://doi.org/10.1016/j.gr.2012.11.010.Mints M.V., Dokukina K.A., Konilov A.N., 2014. The Meso-Neoarchaean Belomorian Eclogite Province: Tectonic Position and Geodynamic Evolution. Gondwana Research 25 (2), 561–584. https://doi.org/10.1016/j.gr.2012.11.010.Müller S., Dziggel A., Kolb J., Sindern S., 2018. Mineral Textural Evolution and PT-Path of Relict Eclogite-Facies Rocks in the Paleoproterozoic Nagssugtoqidian Orogen, South-East Greenland. Lithos 296–299, 212–232. https://doi.org/10.1016/j.lithos.2017.11.008.Müller S., Dziggel A., Kolb J., Sindern S., 2018. Mineral Textural Evolution and PT-Path of Relict Eclogite-Facies Rocks in the Paleoproterozoic Nagssugtoqidian Orogen, South-East Greenland. Lithos 296–299, 212–232. https://doi.org/10.1016/j.lithos.2017.11.008.O’Reilly S.Y., Griffin W.L., Pearson N.J., Jackson S.E., Belousova E.A., Alard O., Saeed A., 2008. Taking the Pulse of the Earth: Linking Crustal and Mantle Events. Australian Journal of Earth Sciences 55 (6–7), 983–995. https://doi.org/10.1080/08120090802097450.O’Reilly S.Y., Griffin W.L., Pearson N.J., Jackson S.E., Belousova E.A., Alard O., Saeed A., 2008. Taking the Pulse of the Earth: Linking Crustal and Mantle Events. Australian Journal of Earth Sciences 55 (6–7), 983–995. https://doi.org/10.1080/08120090802097450.Page F.Z., Essene E.J., Mukasa S.B., Valley J.W., 2014. A Garnet-Zircon Oxygen Isotope Record of Subduction and Exhumation Fluids from the Franciscan Complex, California. Journal of Petrology 55 (1), 103–131. https://doi.org/10.1093/petrology/egt062.Page F.Z., Essene E.J., Mukasa S.B., Valley J.W., 2014. A Garnet-Zircon Oxygen Isotope Record of Subduction and Exhumation Fluids from the Franciscan Complex, California. Journal of Petrology 55 (1), 103–131. https://doi.org/10.1093/petrology/egt062.Puga E., Fanning C.M., Nieto J.M., De Federico A.D., 2005. Recrystallization Textures in Zircon Generated by Ocean-Floor and Eclogite-Facies Metamorphism: A Cathodoluminescence and U-Pb Shrimp Study, with Constraints from REE Elements. The Canadian Mineralogist 43 (1), 183–202. https://doi.org/10.2113/gscanmin.43.1.183.Puga E., Fanning C.M., Nieto J.M., De Federico A.D., 2005. Recrystallization Textures in Zircon Generated by Ocean-Floor and Eclogite-Facies Metamorphism: A Cathodoluminescence and U-Pb Shrimp Study, with Constraints from REE Elements. The Canadian Mineralogist 43 (1), 183–202. https://doi.org/10.2113/gscanmin.43.1.183.Rubatto D., Angiboust S., 2015. Oxygen Isotope Record of Oceanic and High-Pressure Metasomatism: A P-T-Time-Fluid Path for the Monviso Eclogites (Italy). Contributions to Mineralogy and Petrology 170 (44), 1–16. https://doi.org/10.1007/s00410-015-1198-4.Rubatto D., Angiboust S., 2015. Oxygen Isotope Record of Oceanic and High-Pressure Metasomatism: A P-T-Time-Fluid Path for the Monviso Eclogites (Italy). Contributions to Mineralogy and Petrology 170 (44), 1–16. https://doi.org/10.1007/s00410-015-1198-4.Skublov S.G., Berezin A.V., Berezhnaya N.G., 2012. General Relations in the Trace-Element Composition of Zircons from Eclogites with Implications for the Age of Eclogites in the Belomorian Mobile Belt. Petrology 20 (5), 427–449. https://doi.org/10.1134/S0869591112050062.Skublov S.G., Berezin A.V., Berezhnaya N.G., 2012. General Relations in the Trace-Element Composition of Zircons from Eclogites with Implications for the Age of Eclogites in the Belomorian Mobile Belt. Petrology 20 (5), 427–449. https://doi.org/10.1134/S0869591112050062.Skublov S.G., Berezin A.V., Mel’nik A.E., Lee S.-Kh., Rubatto D., Herwartz D., 2018. Paleoproterozoic Eclogites of the Belomorian Belt: Data of Radiogenic and Stable Isotopes for Rock-Forming and Accessory Minerals. In: Along the Wake of a Large Ship: Current Problems of Magmatism, Metamorphism and Geodynamics. Proceedings of the III Conference Dedicated to the 85th Anniversary of the Honored Professor of Moscow State University L.L. Perchuk (November 23–24, 2018). Chernogolovka, p. 67–68 (in Russian) [Скублов С.Г., Березин А.В., Мельник А.Е., Ли С.Х., Рубатто Д., Хервартц Д. Палеопротерозойские эклогиты Беломорского пояса: данные радиогенных и cтабильных изотопов для породообразующих и акцессорных минералов // В кильватере большого корабля: современные проблемы магматизма, метаморфизма и геодинамики: Материалы III конференции, посвященной 85-летию со дня рождения заслуженного профессора МГУ Л.Л. Перчука (23–24 ноября 2018 г.). Черноголовка, 2018. С. 67–68].Skublov S.G., Berezin A.V., Mel’nik A.E., Lee S.-Kh., Rubatto D., Herwartz D., 2018. Paleoproterozoic Eclogites of the Belomorian Belt: Data of Radiogenic and Stable Isotopes for Rock-Forming and Accessory Minerals. In: Along the Wake of a Large Ship: Current Problems of Magmatism, Metamorphism and Geodynamics. Proceedings of the III Conference Dedicated to the 85th Anniversary of the Honored Professor of Moscow State University L.L. Perchuk (November 23–24, 2018). Chernogolovka, p. 67–68 (in Russian) [Скублов С.Г., Березин А.В., Мельник А.Е., Ли С.Х., Рубатто Д., Хервартц Д. Палеопротерозойские эклогиты Беломорского пояса: данные радиогенных и cтабильных изотопов для породообразующих и акцессорных минералов // В кильватере большого корабля: современные проблемы магматизма, метаморфизма и геодинамики: Материалы III конференции, посвященной 85-летию со дня рождения заслуженного профессора МГУ Л.Л. Перчука (23–24 ноября 2018 г.). Черноголовка, 2018. С. 67–68].Trail D., Watson E.B., Tailby N.B., 2012. Ce and Eu Anomalies in Zircon as Proxies for the Oxidation State of Magmas. Geochimica et Cosmochimica Acta 97 (15), 70–87. https://doi.org/10.1016/j.gca.2012.08.032.Trail D., Watson E.B., Tailby N.B., 2012. Ce and Eu Anomalies in Zircon as Proxies for the Oxidation State of Magmas. Geochimica et Cosmochimica Acta 97 (15), 70–87. https://doi.org/10.1016/j.gca.2012.08.032.Vervoort J., 2014. Lu-Hf Dating: The Lu-Hf Isotope System. In: W. Rink, J. Thompson (Eds), Encyclopedia of Scientific Dating Methods. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6326-5_46-1.Vervoort J., 2014. Lu-Hf Dating: The Lu-Hf Isotope System. In: W. Rink, J. Thompson (Eds), Encyclopedia of Scientific Dating Methods. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6326-5_46-1.Yu H.L., Zhang L.F., Wei C.J., Li X.L., Guo J.H., 2017. Age and P–T Conditions of the Gridino-Type Eclogite in the Belomorian Province, Russia. Journal of Metamorphic Geology 35, 855–869. https://doi.org/10.1111/jmg.12258.Yu H.L., Zhang L.F., Wei C.J., Li X.L., Guo J.H., 2017. Age and P–T Conditions of the Gridino-Type Eclogite in the Belomorian Province, Russia. Journal of Metamorphic Geology 35, 855–869. https://doi.org/10.1111/jmg.12258.Zeh A., Cabral A.R., Koglin N., Decker M., 2018. Rutile Alteration and Authigenic Growth in Metasandstones of the Moeda Formation, Minas Gerais, Brazil – A Result of Transamazonian Fluid–Rock Interaction. Chemical Geology 483, 397–409. https://doi.org/10.1016/j.chemgeo.2018.03.007.Zeh A., Cabral A.R., Koglin N., Decker M., 2018. Rutile Alteration and Authigenic Growth in Metasandstones of the Moeda Formation, Minas Gerais, Brazil – A Result of Transamazonian Fluid–Rock Interaction. Chemical Geology 483, 397–409. https://doi.org/10.1016/j.chemgeo.2018.03.007.

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