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Sedimentological variability and depositional environment of the Anthemountas River (Northern Greece) during the Late Pleistocene and Holocene
Quaternary International ( IF 1.9 ) Pub Date : 2021-04-03 , DOI: 10.1016/j.quaint.2021.03.044
Sofia Doani , Iwona Hildebrandt-Radke , Konstantinos Vouvalidis , Konstantinos Albanakis , Georgios Syrides

Research has shown that fluvial systems exhibit a rapid response to extreme events, such as floods or climate-tectonic interplay, the evidence of which is recorded in fluvial sediments. This article provides new data and insights into the reconstruction of the Anthemountas River depositional environment. The study was conducted with granulometric analysis and with the lithostratigraphic and chronostratigraphic description of approximately 20000 yr B.P., the area's most extended sedimentary sequence to date. The evolution of the Anthemountas River Valley during the Late Pleistocene and Holocene is closely linked to tectonic activity and changes in the sea-level and climate. The interpretation of grain size cumulative curves, frequency curves, and the Passega C-M diagram is used in conjunction with the textural parameters of the sediments to obtain information about the means of transport and the intensity of environmental conditions. In addition, the loss on ignition method was used to estimate two parameters; organic matter and carbonates. Chronostratigraphic details were also obtained from the A.M.S. dating of charcoal samples. The analysis has identified the Late Pleistocene aggradation materials and the transition to the Holocene. Sedimentation can be described as a fluvial valley-fill sequence with periodical in-channel, off-channel, and floodplain series. After 3500 cal. B.P., the area is affected by the possible formation of a bay-head delta, with fluvial-dominated sands and the development of stable floodplains. Finally, the fluvial records of the Anthemountas River reveal phases of hydrological activity and stability.



中文翻译:

晚更新世和全新世期间Anthemountas河(希腊北部)的沉积学变异性和沉积环境

研究表明,河流系统对诸如洪水或气候-构造相互作用之类的极端事件具有快速反应,这些证据记录在河流沉积物中。本文为Anthemountas河沉积环境的重建提供了新的数据和见解。这项研究是通过粒度分析以及大约20000年BP的岩石地层学和年代地层学描述进行的,这是该地区迄今为止最广泛的沉积层序。晚更新世和全新世期间的Anthemountas流域的演变与构造活动以及海平面和气候变化密切相关。解释晶粒度累积曲线,频率曲线,Passega CM图与沉积物的纹理参数结合使用,以获得有关运输方式和环境条件强度的信息。另外,使用燃烧损失法估算了两个参数。有机物和碳酸盐。还从木炭样品的AMS测年获得了年代地层学细节。分析确定了晚更新世的凝结物质和向全新世的过渡。沉积可以描述为河道填谷序列,具有周期性的河道内,河道外和洪泛区系列。3500校准后 英国石油公司(BP)受可能形成河床三角洲,河床为主的砂土和稳定洪泛区的发展影响。最后,

更新日期:2021-04-04
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