globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2017.01.008
Scopus记录号: 2-s2.0-85009833995
论文题名:
Late Quaternary sackungen in the highest mountains of the Carpathians
作者: Pánek T.; Mentlík P.; Engel Z.; Braucher R.; Zondervan A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 159
起始页码: 47
结束页码: 62
语种: 英语
Scopus关键词: Climate change ; Earthquakes ; Rocks ; Seismology ; Slope stability ; Stress relaxation ; Causal relationships ; Complex relationships ; Earthquake triggering ; Geomorphic evidence ; Glacial chronology ; Rock slope failure ; Terrestrial cosmogenic nuclides ; Triggering factors ; Landforms ; Allerod ; alpine environment ; Bolling ; cosmogenic radionuclide ; earthquake trigger ; fault ; Hypsithermal ; Last Glacial Maximum ; Postglacial ; Quaternary ; radiocarbon dating ; rock mechanics ; seismicity ; slope failure ; Carpathians ; Dinaric Alps ; Poland [Central Europe] ; Serbia ; Slovakia ; Tara Mountain
英文摘要: Sackungen represents a common mode of deep-seated rock-slope failures in alpine landscapes, but proof of their temporal and causal relationship to extrinsic factors such as climatic changes, glacier retreat or seismic activity remains elusive. Based on the terrestrial cosmogenic nuclide (TCN) dating of 18 sackung scarps supported by one radiocarbon-dated scarp, we reconstructed the post-glacial chronology of sackungen in the Tatra Mts. (central Europe, Slovakia and Poland), the highest part of the Carpathians. The obtained ages (∼15.7–4.3 ka) indicate that sackungen post-date the regional LGM and some of them originated soon after the glacier withdrawal from adjacent valleys. Furthermore, systematic decrease of scarp ages with their increasing altitude suggests a direct link between sackung origin and post-LGM glacier thinning. However, substantial lag (>5 ka) of some sackungen in respect to glacier retreat implies complex relationships between sackung onset and deglaciation where retreat of glaciers acted predominantly as a preparatory, not a triggering factor during the genesis of these slope deformations. They originated either as a consequence of stress relaxation within the rock mass lasting several ka or alternatively could be triggered by climatic processes or seismicity. Indeed, a significant part of sackung activity took place during predominantly warmer and more humid periods, with some dates coinciding with the Bølling–Allerød chronozone, but especially with the onset of the Holocene and the Holocene Climatic Optimum. Earthquake triggering is less probable, as the Tatra Mts. lack significant modern and historic seismic activity and there is no geomorphic evidence of fault offsets on the Late Quaternary landforms. In concert with other recent studies, we propose that large rock slope failures in high mountains seldom react immediately to glacier withdrawal, but could display temporal delay lasting up to several millennia. © 2017 Elsevier Ltd
资助项目: This study was conducted within the framework of the Czech Science Foundation, project 13-15123S. We would like to thank J. Hradecký, V. Kapustová, J. Lenart, D. Pěcha, M. Pluháčková and V. Škarpich for their assistance during field work. ASTER AMS national facility (CEREGE, Aix en Provence) is supported by the INSU/CNRS, the ANR through the “Projets thématiques d'excellence” program for the “Equipements d'excellence” ASTER-CEREGE action and IRD. We express our sincere gratitude to David Jarman for discussions on the topic of this work and help with polishing the manuscript and to Sam McColl and an anonymous reviewer for their supportive comments.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59304
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作者单位: Department of Physical Geography and Geoecology, Faculty of Science, University of Ostrava, Chittussiho 10, Ostrava, Czech Republic; Centre of Biology, Geoscience and Environmental Education, University of West Bohemia, Klatovská 51, Plzeň, Czech Republic; Department of Physical Geography and Geoecology, Charles University in Prague, Albertov 6, Praha, Czech Republic; Aix-Marseille Université, CNRS-IRD-Collège de France, UM 34 CEREGE, Technopôle de l'Environnement Arbois–Méditerranée, BP80, Aix-en-Provence, France; Environment and Materials Division, GNS Science, Lower Hutt, New Zealand

Recommended Citation:
Pánek T.,Mentlík P.,Engel Z.,et al. Late Quaternary sackungen in the highest mountains of the Carpathians[J]. Quaternary Science Reviews,2017-01-01,159
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