DOI: 10.1016/j.quascirev.2018.07.030
Scopus记录号: 2-s2.0-85050410090
论文题名: 10Be dating reveals pronounced Mid-to Late Holocene activity of deep-seated landslides in the highest part of the Czech Flysch Carpathians
作者: Břežný M. ; Pánek T. ; Lenart J. ; Zondervan A. ; Braucher R.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 195 起始页码: 180
结束页码: 194
语种: 英语
英文关键词: 10Be dating
; Deep-seated gravitational slope deformations
; Deep-seated landslides
; Flysch rocks
; Landslide chronology
; Outer Western Carpathians
Scopus关键词: Deformation
; Digital subscriber lines
; Lithology
; Deep seated landslide
; Episodic activity
; Gravitational movement
; Late Holocene activity
; Mid to late Holocene
; Slope deformation
; Western carpathians
; ^10Be dating
; Landslides
; beryllium isotope
; claystone
; deformation
; episodic event
; fault scarp
; flysch
; ground movement
; Holocene
; hydrometeorology
; landslide
; lithology
; slope stability
; threshold
; Carpathians
; Czech Republic
; Moravskoslezsky
; Western Carpathians
英文摘要: Although the highest part of the Czech Outer Western Carpathians lacks significant recent landslide activity, the vast area (∼20%) of their territory is occupied by relict deep-seated landslides and deep-seated gravitational slope deformations. Dating these deformations might help to determine degrees of present-day landslide hazard in that area. Based on the 10Be exposure dating of eight rocky scarps and walls of ridge-top trenches, we estimated the minimal ages of the deep-seated landslides (DSLs) and one deep-seated gravitational slope deformation (DSGSD) in the Satina River basin in the Moravskoslezské Beskydy Mts. The obtained ages (∼9.7–2.9 ka) suggest Holocene slope instability in the area with a pronounced cluster of ages spanning from ∼6.0 to 2.9 ka. Except for one DSL, the ages reveal rather episodic activity of gravitational movements. Mid-to early Late Holocene activity of large landslides in the study area corresponds to the ages of several previously dated landslides both in an adjacent region as well as within the Central European context. With respect to the historical quiescence of the DSLs and DSGSDs in the area and because the slopes have not been destabilized, even during the most extreme hydrometeorological events within the last few decades, we infer that the hydrometeorological thresholds necessary for their activation are seldom exceeded in this area. Therefore, the highest parts of the Carpathians built by rigid thick-bedded lithology reveal a rather lower frequency of events in comparison with adjacent parts formed by claystone-dominated flysch, where several large DSLs originated in the last few decades as a consequence of heavy rainfalls. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112097
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physical Geography and Geoecology, Faculty of Science, University of Ostrava, Chittussiho 10, Ostrava, 710 00, Czech Republic; Environment and Materials Division, GNS Science, BOX 30368, Lower Hutt, 5040, New Zealand; Aix-Marseille Univ., CNRS-IRD-Collège de France, UM 34 CEREGE, Technopôle de l'Environnement Arbois–Méditerranée, BP80Aix-en-Provence 13545, France
Recommended Citation:
Břežný M.,Pánek T.,Lenart J.,et al. 10Be dating reveals pronounced Mid-to Late Holocene activity of deep-seated landslides in the highest part of the Czech Flysch Carpathians[J]. Quaternary Science Reviews,2018-01-01,195