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首页> 外文期刊>Zeitschrift der Deutschen Gesellschaft fur Geowissenschaften: ZDGG >Periods of recent dune sand mobilisation in Cuddalore, Southeast India
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Periods of recent dune sand mobilisation in Cuddalore, Southeast India

机译:印度东南部的Cuddalore最近沙丘沙子动员的时期

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In this study the results from optically stimulated luminescence (OSL) dating of dune sands from the southeast coast of India are presented. The samples were taken from a dune belt running parallel to the coast of Tamil Nadu between the cities of Cuddalore and Porto Novo. Based on previous studies of sea level changes a Holocene age of the sand mobilisation was expected. Our results show a very young age of dune formation. The investigated dunes are not older than 200 years. Periods of increased sand movement are recorded in the dunes. These periods correlate with reduced rainfall during the NE-monsoon in Tamil Nadu. A soil-like horizon and an event layer with dewatering structures provide evidence for environmental changes within the last 200 years. This work demonstrates the application of OSL dating on recent sediments and the potential of the dunes in the study area for palaeoenvironmental reconstruction.
机译:在这项研究中,光学刺激的发光(OSL)来自印度东南沿岸的沙丘沙丘约会的结果。 样品从Cuddalore和Porto Novo之间的城市之间并行运行的沙丘带跑。 基于以前的海平面研究,预期了沙子动员的全新世时代。 我们的结果表明了沙丘形成的非常年轻。 调查的沙丘不超过200年。 在沙丘中记录了增加的砂运动的时期。 这些时期与泰米尔纳德邦的Ne-Monsoon期间降雨量降低相关。 土壤样地平线和脱水结构的事件层提供了过去200年内的环境变化的证据。 这项工作展示了OSL约会在近期沉积物上的应用以及古环境重建研究领域的沙丘的潜力。

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