The paleoproterozoic Kandalaksha Anorthosite Massif: New U–Pb (ID–TIMS) data and geochemical features of zircon

Steshenko, Ekaterina; Nikolaev, A. I.; Bayanova, T. B.; Drogobuzhskaya, Svetlana; Chashchin, V. V.; Serov, Pavel; Lyalina, L. М.; Novikov, A.I.

doi:10.1134/s1028334x17120194

Cited by 7 publications

(5 citation statements)

References 11 publications

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“…The determination limits were in the range of 0.01 ppm when the diameter of the laser beam was 155 µm, which was in compliance with the available data [17][18][19]. The results were verified in interlaboratory cross-checks and analyses of internationally approved standard zircon samples 91500, TEMORA 1, and Mud Tank [11][12][13].…”

Section: La-icp-mssupporting

confidence: 83%

“…External calibration was carried out using NIST 612 glass with the known contents of REE, U, and Th of 40 ppm as a multipoint calibration forced through the origin after blank correction. The diameter of the laser beam was changed, while all of the rest parameters remained the same: From 35 µm to 240 µm (r = 0.999) [11][12][13]. Sample NIST SRM 610 with the content of 450 ppm was used to check the accuracy of data reduction [14][15][16].…”

Section: La-icp-msmentioning

confidence: 99%

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The Paleoproterozoic Kandalaksha-Kolvitsa Gabbro-Anorthosite Complex (Fennoscandian Shield): New U–Pb, Sm–Nd, and Nd–Sr (ID-TIMS) Isotope Data on the Age of Formation, Metamorphism, and Geochemical Features of Zircon (LA-ICP-MS)

2020

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The paper provides new U–Pb, Sm–Nd, and Nd–Sr isotope-geochronological data on rocks of the Paleoproterozoic Kandalaksha-Kolvitsa gabbro-anorthosite complex. Rare earth element (REE) contents in zircons from basic rock varieties of the Kandalaksha-Kolvitsa area were analyzed in situ using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Plots of REE distribution were constructed, confirming the magmatic origin of zircon. Temperatures of zircon crystallization were estimated using a Ti-in-zircon geochronometer. The U–Pb method with a 205Pb artificial tracer was first applied to date single zircon grains (2448 ± 5 Ma) from metagabbro of the Kolvitsa massif. The U–Pb analysis of zircon from anorthosites of the Kandalaksha massif dated the early stage of the granulite metamorphism at 2230 ± 10 Ma. The Sm–Nd isotope age was estimated on metamorphic minerals (apatite, garnet, sulfides) and whole rock at 1985 ± 17 Ma (granulite metamorphism) for the Kolvitsa massif and at 1887 ± 37 Ma (high-temperature metasomatic transformations) and 1692 ± 71 Ma (regional fluid reworking) for the Kandalaksha massif. The Sm–Nd model age of metagabbro was 3.3 Ga with a negative value of εNd = 4.6, which corresponds with either processes of crustal contamination or primary enriched mantle reservoir of primary magmas.

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Section: La-icp-mssupporting

confidence: 83%

Section: La-icp-msmentioning

confidence: 99%

The Paleoproterozoic Kandalaksha-Kolvitsa Gabbro-Anorthosite Complex (Fennoscandian Shield): New U–Pb, Sm–Nd, and Nd–Sr (ID-TIMS) Isotope Data on the Age of Formation, Metamorphism, and Geochemical Features of Zircon (LA-ICP-MS)

2020

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“…This would suggest that Ti-in-zircon temperatures for granites have to be significantly upward corrected relative to the original TiO 2 - and SiO 2 -saturated calibration of the thermometer, in the order of + 70 °C. Looking through the literature, we observe that many applications of Ti-in-zircon thermometry to granites so far (including the most recent papers) involved no or only a minor / correction and could thus bear a significant systematic error (e.g., Sepidbar et al 2018 ; Roberts et al 2018 ; Chen et al 2018 ; Grajales-Nishimura et al 2018 ; Langone et al 2018 ; Steshenko et al 2017 ; Zhang et al 2018 ; Shabanian et al 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Application of Ti-in-zircon thermometry to granite studies: problems and possible solutions

Schiller

Finger

2019

Contrib Mineral Petrol

128

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The application of the Ti-in-zircon thermometer to granitic rock requires consideration of and during zircon crystallization. Thermodynamic software programs such as rhyolite-MELTS or Perple_X permit the estimation of and values from whole-rock geochemical data as a function of pressure and temperature. Model calculations carried out on a set of 14 different granite types at 2 kbar, 5 kbar, and H 2 O = 3 wt% show during zircon crystallization close to 1 (0.75–1) and generally far below unity (0.1–0.6). This would suggest that Ti-in-zircon temperatures for granites must be significantly upward corrected relative to the original TiO 2 - and SiO 2 -saturated calibration of the thermometer. Both the rhyolite-MELTS and Perple_X calculations indicate that is typically around 0.5 in ilmenite-bearing granites. Thus, for ilmenite-series granites (that is, almost all S-type and many I-type granites), it could be a reasonable first order approximation to apply a constant temperature correction of + 70 °C to the Ti-in-zircon thermometer. Granites lacking the paragenesis zircon–ilmenite, that is, some A-type granites and a few special I-type granites may have even lower (0.1–0.5) and some of them may require a huge upward correction of Ti-in-zircon temperatures on the order of 100–200 °C. Using a set of Ti-in-zircon measurements from a Variscan granite of the Bohemian Massif, we introduce a novel T -dependent and correction of Ti-in-zircon calculated temperatures which is based on -, – T functions modelled with rhyolite-MELTS. This method takes into account that early and late zircons in granitic systems may crystallize at different and . Furthermore, we highlight the usefulness of comparing the corrected results of Ti-in-zircon thermometry with bulk-rock-Zr-based zircon solubility thermometry and ideal zircon crystallization temperature distributions for granites, and we present a graphical method that enables this comparison. In addition, this paper addresses the problem that Ti-in-zircon measurements are commonly collected with only moderate spatial analytical resolution, which leads to an averaging effect and to difficulties in recording accurate crystallization temperatures. Therefore, we propose that Ti-in-zircon thermometry for granites should generally rely on the more representative median- T ( T med ) value of a series of zircon analyses. Peak magma temperatures will be, in general, 35–50 °C above T med , as can be modelled using zircon crystallization temperature distributions.

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“…Для метагаббро Кандалакшского массива определён новый прецизионный U-Pb возраст по единичным зернам циркона, равный 2453.5 ± 4.8 млн. лет, который интерпретируется временем магматического формирования пород массива (Steshenko et al, 2017(Steshenko et al, , 2018.…”

Section: заключениеunclassified

Актуальные Проблемы Геологии Докембрия, Геофизики И Геоэкологии: Материалы XXXIII Молодежной Научной Школы-Конференции, Посвященной Памяти Члена-Корреспондента АН СССР К.О. Кратца И Академика РАН Ф.П. Митрофанова, Г. Апатиты, 3–7 Октября 2022 Г.

2022

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Данный сборник представляет собой материалы XXXIII молодежной научной школы- конференции, посвященной памяти члена-корреспондента АН СССР К.О. Кратца и академика РАН Ф.П. Митрофанова. Статьи подготовлены молодыми учеными из академических, образовательных и производственных учреждений Апатитов, Санкт-Петербурга, Петрозаводска, Москвы, Казани, Новосибирска, Томска, Черноголовки, Гомеля, Воронежа, Тюмени, Благовещенска, Улан-Удэ, Иркутска. В сборнике отражены результаты исследований в области геологии, петрологии, геохимии, геохронологии, минералогии, кристаллохимии, науке о полезных ископаемых, геофизики и геоэкологии. Публикация рассчитана на широкий круг студентов, аспирантов и специалистов в области геологии, геофизики и геоэкологии. Конференция молодых учёных, посвящённая памяти члена-корреспондента АН СССР К.О. Кратца и академика РАН Ф.П. Митрофанова, традиционно проводится ежегодно в разных городах Северо-Запада России, начиная с 1985 года. Инициатором и учредителем Конференции является академик Ф.П. Митрофанов, заслуженный геолог России (2011), лауреат Государственной премии Российской Федерации в области науки и технологий за научное обоснование и открытие крупных месторождений платино-палладиевых руд на Кольском полуострове (2011). Особенностью конференции является то, что она проводится под эгидой Советов молодых учёных научных организаций поочередно в Апатитах (на базе ГИ КНЦ РАН), Петрозаводске (ИГ КарНЦ РАН) и Санкт-Петербурге (ИГГД РАН). В настоящее время особую важность приобретают исследования в области стратегических видов минерального сырья (в том числе, включающие изучение техногенных месторождений), без прироста запасов которого невозможно перспективное устойчивое развитие России. В докладах будут рассмотрены сообщения о ранее неизвестных рудопроявлениях и точках минерализации. Именно молодые геологи в будущем будут решать задачи стратегической безопасности и развития минерально-сырьевой базы России. Опыт проведения подобных конференций показывает, что они плодотворны для роста квалификации молодых исследователей, расширяя круг их научных интересов. Важнейшим результатом ежегодных встреч стало создание молодёжных творческих коллективов из различных городов, включающих специалистов в различных областях наук о Земле. Ежегодное издание трудов и проведение Конференции способствует росту квалификации кадров в академических институтах, вузах и производственных организациях в сфере рационального природопользования. Авторы лучших докладов награждаются дипломами конференции и ценными призами. В ходе конференции запланированы полевые экскурсии по уникальным геологическим объектам Кольского полуострова и посещение Музея геологии и минералогии им И.В. Белькова ГИ КНЦ РАН.

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The paleoproterozoic Kandalaksha Anorthosite Massif: New U–Pb (ID–TIMS) data and geochemical features of zircon

Cited by 7 publications

References 11 publications

The Paleoproterozoic Kandalaksha-Kolvitsa Gabbro-Anorthosite Complex (Fennoscandian Shield): New U–Pb, Sm–Nd, and Nd–Sr (ID-TIMS) Isotope Data on the Age of Formation, Metamorphism, and Geochemical Features of Zircon (LA-ICP-MS)

The Paleoproterozoic Kandalaksha-Kolvitsa Gabbro-Anorthosite Complex (Fennoscandian Shield): New U–Pb, Sm–Nd, and Nd–Sr (ID-TIMS) Isotope Data on the Age of Formation, Metamorphism, and Geochemical Features of Zircon (LA-ICP-MS)

Application of Ti-in-zircon thermometry to granite studies: problems and possible solutions

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