DOI: 10.1016/j.quascirev.2018.05.012
Scopus记录号: 2-s2.0-85048733814
论文题名: Eemian and post-Eemian fluvial dynamics in the Lesser Caucasus
作者: von Suchodoletz H. ; Gärtner A. ; Zielhofer C. ; Faust D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 191 起始页码: 189
结束页码: 203
语种: 英语
英文关键词: Eastern Europe
; Fluvial archives
; Fluvial geomorphology
; Holocene
; Landscape activity and stability
; Lesser caucasus
; Paleogeography
; Pleistocene
Scopus关键词: Landforms
; Rivers
; Sediments
; Caucasus
; Eastern Europe
; Fluvial archives
; Fluvial geomorphology
; Holocenes
; Paleogeography
; Pleistocene
; Dynamics
英文摘要: Mountain regions such as the Lesser Caucasus are a focus of ongoing environmental changes. To understand their future evolution, information about their former geomorphic and environmental dynamics is required. The former fluvial dynamics derived from fluvial sediment archives can offer such insights. However, the fluvial dynamics of the Lesser Caucasus since the Eemian interglacial have not been systematically investigated so far. Thus, we have studied late Pleistocene and Holocene sediments of several rivers originating from the central Lesser Caucasus. The studied rivers show a mostly coherent record of fluvial dynamics: Minor aggradation occurred during early Marine Isotope Stage (MIS) 5, incision during late MIS 5 or early MIS 4, intensive silty aggradation at least during late MIS 3, incision during early MIS 2, coarse-grained aggradation probably during some millenia until ca. 19 ka, and aggradation ca. 14-13 ka. Following incision around the Pleistocene/Holocene transition, aggradation resumed around 6.0, 3.4 – 2.0 and 0.5 – 0.15 cal. ka BP. Generally, periods of aggradation, incision and stability could be linked with regional climatic or anthropogenic influences on regional landscape stability and water availability. The fluvial dynamics of the central Lesser Caucasus mostly differed even between neighbouring regions, and only in cases of significant hemispheric climatic fluctuations as around 20 ka, during the Pleistocene/Holocene transition or the Little Ice Age, were similar over-regional fluvial patterns observed. This demonstrates the individual character of river systems especially in mountain regions such as the southern Caucasus with strong geoecological gradients. Thus, to understand the former landscape dynamics of mountain landscapes, investigations of fluvial sediment archives on a regional to sub-regional scale are necessary. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112177
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Institute of Geography, University of Leipzig, Johannisallee 19a, Leipzig, D-04103, Germany; Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, Sektion Geochronologie, Königsbrücker Landstrasse 159, Dresden, D-01109, Germany; Institute of Geography, University of Technology Dresden, Helmholtzstrasse 10, Dresden, D – 04069, Germany
Recommended Citation:
von Suchodoletz H.,Gärtner A.,Zielhofer C.,et al. Eemian and post-Eemian fluvial dynamics in the Lesser Caucasus[J]. Quaternary Science Reviews,2018-01-01,191