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首页> 外文期刊>eEarth >Holocene evolution and sedimentation rate of Alikes Lagoon, Zakynthos island, Western Greece: preliminary results
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Holocene evolution and sedimentation rate of Alikes Lagoon, Zakynthos island, Western Greece: preliminary results

机译：希腊西部扎金索斯岛阿​​里克斯泻湖的全新世演化和沉积速率：初步结果

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摘要

In the present study we present preliminary results from Alikes lagoon in Zakynthos island, an area that is one of the most seismically active regions of Greece. In order to estimate – interpret the Holocene evolution of the area and to reconstruct the palaeoenvironmental changes, we based on data derived from a 21 m sediment core. Sediment types, structure, colour, as well as contact depths and bed characteristics were recorded in the field. Standarised sedimentological analysis was carried out, on 46 samples including grain size analysis, calculation of moment measures, and micro- and molluscan fossils of 17 selected samples. Moreover, radiocarbon age determinations have been made on individual Cardium shells from two horizons and whole – core Magnetic Susceptibility (MS) measurements were taken. The interpretation of depositional environments suggests a coastal environment (restricted-shallow) with reduced salinity such as a lagoon margin and in a tidal flat and/or marsh particularly. The maximum age of the studied sediments is about 8500 BP. The rate of sedimentation between 8280 BP while 5590 BP was 5.3 mm/yr and between 5590 BP and modern times is on the order of 1.03 mm/yr. These sedimentation rates results are similar to other coastal areas of western Greece.
机译：在本研究中，我们提供了扎金索斯岛Alikes泻湖的初步结果，该地区是希腊地震最活跃的地区之一。为了估算–解释该地区的全新世演化并重建古环境变化，我们基于21 m沉积物岩心的数据。现场记录了沉积物的类型，结构，颜色以及接触深度和河床特征。对46个样品进行了标准化的沉积学分析，包括颗粒大小分析，弯矩量度的计算以及选择的17个样品的显微和软体动物化石。此外，已经从两个角度对单个Cardium壳进行了放射性碳年龄测定，并进行了全芯磁化率（MS）测量。沉积环境的解释表明，盐度降低的沿海环境（浅层受限），例如泻湖边缘，尤其是在潮滩和/或沼泽中。研究沉积物的最大年龄约为8500 BP。 8280 BP和5590 BP之间的沉积速率为5.3 mm / yr，5590 BP与现代之间的沉积速率约为1.03 mm / yr。这些沉积率结果与希腊西部其他沿海地区相似。

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