gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2012-3-3-0070gtcrust-161Research ArticleТЕКТОНОФИЗИКАTECTONOPHYSICSВНУТРЕННЯЯ СТРУКТУРА РАЗЛОМНЫХ ЗОН: ПРОСТРАНСТВЕННО- ВРЕМЕННАЯ ЭВОЛЮЦИЯ НА ОСНОВЕ РЕЗУЛЬТАТОВ ФИЗИЧЕСКОГО МОДЕЛИРОВАНИЯINTERNAL STRUCTURE OF FAULT ZONES: SPATIAL AND TEMPORAL EVOLUTION STUDIES ON CLAY MODELSСеминскийКонстантин ЖановичSeminskyKonstantin Zh

докт. геол.-мин. наук, зав. лабораторией тектонофизики,

664033, Иркутск, ул. Лермонтова, 128

Doctor of Geology and Mineralogy, Head of Laboratory of Tectonophysics,

128 Lermontov street, Irkutsk 664033

seminsky@crust.irk.ruИнститут земной коры СО РАНРоссияInstitute of the Earth’s Crust, Siberian Branch of RASRussian Federation20122409201533183194Copyright © Семинский К.Ж., 20152015Семинский К.Ж.Seminsky K.Z.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/161

На основе обобщения результатов экспериментов на моделях из влажной глины установлены главные закономерности эволюции сдвиговых и сбросовых зон, структура которых формируется неравномерно во времени и пространстве. Отражением пространственной неравномерности является регулярность в строении разломной зоны, связанная с чередованием в продольном направлении двух типов участков. В пределах участков 1-го типа сравнительно быстро формируется магистральный сместитель. Участки 2-го типа характеризуются длительной эволюцией структуры, существенной шириной, высокой плотностью разрывов и на заключительных этапах развития представлены релей-структурами. Отражением временной неравномерности является наличие стадий и подстадий развития разрывной сети, которые тесно взаимосвязаны. Каждой из трех главных стадий соответствуют строго определенные деформационное поведение субстрата и тип разрывной сети, что представлено в тектонофизической модели формирования разломной зоны, которая описана в конце статьи и проиллюстрирована примерами природных сбросов и сдвигов.

Based on results obtained from experiments on clay models, it appeared possible to establish main regularities in the evolution of normal and strike-slip zones which structures are formed heterogeneously in time and space. The spatial heterogeneity is reflected in the regular pattern of the fault zone structure due to the fact that sectors of two different types are length-wisely alternating in the fault zone. Within sectors of Type 1, the main fault forms rapidly. Sectors of Type 2 are characterized by the long-term evolution of the pattern, significant width and high densities of fractures; in final development phases, they are represented by relay structures. The temporal heterogeneity is manifested by stages and sub-stages in the development of the fracture network, which are closely interrelated. Each of the three main stages is associated with specific deformational behaviour of the medium and a particular type of the fracture pattern, as suggested by results of our tectonophysical modelling of fracturing. The model is presented in the article; it is supported by data on natural normal and strikeslip faults.

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