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Role of flysch in rock avalanches formation in the eastern sector of the Alpine-Mediterranean beltстатья
Дата последнего поиска статьи во внешних источниках: 20 июля 2022 г.
- Авторы: Strom Alexander, Zerkal Oleg
- Журнал: ITALIAN GEOTECHNICAL JOURNAL-RIVISTA ITALIANA DI GEOTECNICA
- Том: 1236
- Номер: 2
- Год издания: 2022
- Первая страница: 24
- Последняя страница: 33
- DOI: 10.19199/2022.2.0557-1405.024
- Аннотация: Flysch is one of the most widespread syn-orogenic sedimentary successions all over the World, characterized by cyclic sedimentationand significant variability of the mechanical properties resulting in the relatively low overall strength of large flysch massifs.The peculiar feature of the Alpine-Mediterranean belt eastern sector (the Crimean Mountains and the Greater Caucasus) is thatnumerous high slopes are composed of relatively soft terrigenous flysch at the base, overlain by hard carbonate or volcaniclastic units.Such slopes are often subjected to deep-seated rock slope failures of the strong overlying rocks that fall on the lower parts of the slopescomposed of the weak flysch or compress the underlying flysch, which squeezes out at the foot of high and steep cliffs. The collapsinghard rocks transform into long-runout rock avalanches. Many of them formed in the Middle-Late Neopleistocene, during theclimatic optimum period when climate conditions were much warmer and wetter than at present. Case studies of such large-scalerock slope failures from Crimea, Western and Central Caucasus are presented.
- Добавил в систему: Стром Александр Леонидович