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Variations of the effective elastic thickness over China and surroundings and their relation to the lithosphere dynamicsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
- Авторы: Chen Bo, Chen Chao, Kaban Mikhail K., Jinsong Du, Liang Qing, Thomas Maik
- Журнал: Earth and Planetary Sciences Letters
- Том: 363
- Год издания: 2013
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 61
- Последняя страница: 72
- DOI: 10.1016/j.epsl.2012.12.022
- Аннотация: The effective elastic thickness (T-e) characterizes response of the lithosphere to a long-term tectonic loading. As a proxy of the lithospheric strength, T-e can be used to address mechanical behavior and deformation of the blocks with complex geological structure. Here we use the multitaper coherence method to determine spatial variations of T-e in China and surroundings based on the topography and Bouguer gravity anomaly data. The results show that the T-e values are high ( > 70 km) over the cratons, e.g. India craton, the Siberian Craton, North China Block and also variations of these values are significant over these blocks. Low T-e corresponds to the young orogens, e.g. Himalayas, Altun Shan-Qilian Shan-Longmenshan, Qinling-Dabie, and Daxing'anling-Taihang Mountains etc. Combined with other data, the lateral variations of Te within the North China and South China Blocks and the Tibetan Plateau indicate that the lithospheric strength in China Mainland depends on both lithospheric structure and mantle dynamics. We guess that during the Mesozoic-Cenozoic period, the strength of the lithosphere might have been significantly altered by the thermodynamic processes associated with the India-Eurasia collision in the southwest and the subduction of the Pacific plate in the east. The T-e variations also play a major role in the lithospheric evolution and deformation since the Mesozoic. (c) 2012 Elsevier B.V. All rights reserved.
- Добавил в систему: Кабан Михаил Константинович