DOI: 10.1016/j.quascirev.2014.04.016
Scopus记录号: 2-s2.0-84899847969
论文题名: Glaciers and rivers: Pleistocene uncoupling in a Mediterranean mountain karst
作者: Adamson K.R. ; Woodward J.C. ; Hughes P.D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 94 起始页码: 28
结束页码: 43
语种: 英语
英文关键词: Coupling
; Fluvial
; Glacial
; Karst
; Mediterranean
; Outwash
; Pleistocene
Scopus关键词: Catchments
; Couplings
; Isotopes
; Landforms
; Sedimentology
; Sediments
; Fluvial
; Glacial
; Karst
; Mediterranean
; Outwash
; Pleistocene
; Glacial geology
; aggradation
; alluvial plain
; basin analysis
; depocenter
; fluvial deposit
; glaciation
; headwater
; Holocene
; karst hydrology
; landscape change
; marine isotope stage
; Mediterranean environment
; mountain region
; outwash
; Pleistocene
; sediment transport
; uranium-lead dating
; Alps
; Balkans
; Dinaric Alps
; Eastern Alps
; Montenegro
; Orjen
; Southern Europe
英文摘要: Large-scale coupling between headwater catchments and downstream depocentres is a critical influence on long-term fluvial system behaviour and on the creation of the fluvial sedimentary record. However, it is often difficult to examine this control over multiple Quaternary glacial cycles and it has not been fully explored in karst basins. By investigating the Pleistocene glacial and fluvial records on and around Mount Orjen (1894m) in Montenegro, we show how the changing connectivity between glaciated mountain headwater source zones and downstream alluvial basins is a key feature of long-term karst system behaviour - especially in relation to the creation and preservation of the surface sedimentary record. Middle and Late Pleistocene glacial deposits are well preserved on Mount Orjen. Uranium-series dating of 27 carbonate cements in fluvial sediments shows that many alluvial depocentres were completely filled with coarse glacial outwash before 350. ka during the largest recorded glaciation. This major glaciation is correlated with the Skamnellian Stage in Greece and Marine Isotope Stage 12 (MIS 12, c 480-420. ka). This was a period of profound landscape change in many glaciated catchments on the Balkan Peninsula. Later glaciations were much less extensive and sediment supply to fluvial systems was much diminished. The extreme base level falls of the Late Miocene produced the world's deepest karst networks around the Mediterranean. After MIS 12, the subterranean karst of Mount Orjen formed the dominant pathway for meltwater and sediment transfer so that the depositional basins below 1000m became disconnected (uncoupled) from the glaciated headwaters. There is little evidence of post-MIS 12 aggradation or incision in these basins. This absence of later Pleistocene and Holocene fluvial activity means these basins contain some of the thickest and best-preserved outwash deposits in the Mediterranean. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60263
Appears in Collections: 过去全球变化的重建
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作者单位: School of Geography, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom; Geography, School of Science and the Environment, Manchester Metropolitan University, Manchester M1 5GD, United Kingdom; Quaternary Environments and Geoarchaeology Research Group, Geography, School of, Environment, Education and Development, University of Manchester, Manchester M13 9PL, United Kingdom
Recommended Citation:
Adamson K.R.,Woodward J.C.,Hughes P.D.. Glaciers and rivers: Pleistocene uncoupling in a Mediterranean mountain karst[J]. Quaternary Science Reviews,2014-01-01,94