Transactions of KarRC RAS :: Scientific publications

О.П. Полянский, А.Д. Ножкин, Э.В. Сокол, А.В. Бабичев, А.Н. Семенов.

Псевдотахилиты Главного Анабарского разлома (Анабарский щит): петролого-реологические индикаторы плавления и возраст деформаций

// Труды КарНЦ РАН. No 5. Сер. Геология Докембрия. 2022. C. 111-115

O.P. Polyansky, A.D. Nozhkin, E.V. Sokol, A.V. Babichev, A.N. Semenov. Pseudotachylites of the main anabar fault (anabar shield): petrological-rheological indicators of melting and the age of deformations // Transactions of Karelian Research Centre of Russian Academy of Science. No 5. Precambrian Geology Series. 2022. Pp. 111-115

Keywords: pseudotachylites; Anabar shield; deformations; 40Ar / 39Ar age; rheology

The results of the ⁴⁰Ar/³⁹Ar dating of the vein material of pseudotachylite from the deformation zone of the Main Anabar fault (Northern Yakutia) are presented. The depth of formation of pseudotachyllites is reconstructed using the principles of thermochronology and rheological parameters of deformation. Their ⁴⁰Ar/³⁹Ar age (1910 ± 24 Ma) is compared with the stages of formation of the main deformation belts of the Anabar Shield. A thermochronological interpretation of the results obtained is given. A method for estimating the depth of deformations and the magnitude of differential stresses is proposed.

URL: http://journals.krc.karelia.ru/index.php/precambrian/article/view/1678

DOI: 10.17076/geo1678

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