References

gtcrust

Геодинамика и тектонофизика

Geodynamics & Tectonophysics

2078-502X

Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch

10.5800/GT-2023-14-6-0731

gtcrust-1761

Research Article

СОВРЕМЕННАЯ ГЕОДИНАМИКА

RECENT GEODYNAMICS

ПРИЧИНЫ ДЕЛАМИНАЦИИ КОНТИНЕНТАЛЬНОЙ ЛИТОСФЕРЫ ПОД АРАВИЙСКО-ЕВРАЗИЙСКОЙ И ТЯНЬ-ШАНЬСКОЙ (КИРГИЗИЯ) КОЛЛИЗИОННЫМИ ЗОНАМИ

CAUSES OF CONTINENTAL LITHOSPHERE DELAMINATION BENEATH THE ARABIAN-EURASIAN AND TIEN-SHAN (KYRGYZSTAN) COLLISION ZONES

Медведь

И. В.

Medved

I. V.

630090, Новосибирск, ул. Пирогова, 1; 630090, Новосибирск, пр-т Академика Коптюга, 3; 630090, Новосибирск, пр-т Академика Коптюга, 3

1 Pirogov St, Novosibirsk 630090; 3 Academician Koptyug Ave, Novosibirsk 630090; 3 Academician Koptyug Ave, Novosibirsk 630090

Новосибирский государственный университет; Институт геологии и минералогии им. В.С. Соболева СО РАН; Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАНРоссияNovosibirsk State University; Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of SciencesRussian Federation

2023

14122023

146731731

2023

Медведь И.В.

Medved I.V.

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/1761

Мантийные процессы, происходящие в коллизионных зонах, являются причиной множества тектонических и геодинамических процессов на поверхности, вызывающих высокий уровень сейсмической активности. В результате исследований методом сейсмической томографии стало известно, что под зонами коллизии некоторых регионов, например под Аравийско-Евразийской и Тянь-Шаньской коллизионными зонами, происходит отслоение мантийной части континентальной литосферы от коры, дальнейший отрыв и погружение в мантию, что также называется деламинацией. В данной работе был произведен сравнительный анализ разномасштабных 3D-моделей сейсмической томографии коры и мантии коллизионных зон Аравийско-Евразийской и Тянь-Шаньской коллизионных зон, полученных ранее, с целью обнаружения сходств и различий между наблюдаемыми неоднородностями. В работе также приведен обзор выполненных исследований численного моделирования. Сравнительный анализ сейсмотомографических моделей в совокупности с данными из математического моделирования, а также с данными по тектонической эволюции дает возможность рассуждать о причинах деламинации в исследуемых регионах.

The mantle processes occurring in collisional zones give rise to the occurrence of many tectonic and geodynamic processes on the surface which is associated with a high seismicity level. Seismic tomography studies showed that beneath some collision zones, such as for example, the Arabian-Eurasian and Tien-Shan, the mantle part of the continental lithosphere delaminates from the crust, with a further separation and plunge into the mantle which is also called delamination. This paper deals with a comparative analysis of the earlier obtained different-scale 3D models for seismic tomography of the crust and mantle of the Arabian-Eurasian and Tien-Shan collision zones to identify similarities and differences between the inhomogeneities observed. The paper also provides a review of the numerical modeling studies. A comparative analysis of seismotomographic models in combination with the results of mathematical modeling and the data on tectonic evolution allows making speculations about the causes of delamination in the studied regions.

коллизионные зоныделаминациясейсмическая томографияКавказТянь-ШаньВосточная АнатолияАравийско-Евразийская коллизиягеодинамика

collision zonesdelaminationseismic tomographyCaucasusTien-ShanEastern Anatolia RegionArabian-Eurasian collisiongeodynamics

Работа по изучению процесса деламинации и истории эволюции изучаемых регионов была выполнена при поддержке РФФИ, грант «Перспектива» № 19-35-60002. Работа по обзору математического моделирования была выполнена в рамках государственного задания FWZZ-2022-0030, работа по сравнению моделей сейсмической томографии различных регионов в рамках государственного задания FSUS-2022-0019

The work on studying the process of delamination and the evolutional history of the investigated regions was supported by the RFBR, grant "Perspektiva" 19-35-60002. The work on reviewing the mathematical modeling results was done as part of the state assignment FWZZ-2022-0030, and that on comparing the seismic tomography models of different regions – as part of the state assignment FSUS-2022-0019

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