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首页> 外文期刊>Journal of Asian earth sciences >Using n-alkanes as a proxy to reconstruct sea-level changes in Thale Noi, the west coast of the Gulf of Thailand
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Using n-alkanes as a proxy to reconstruct sea-level changes in Thale Noi, the west coast of the Gulf of Thailand

机译：使用N-烷烃作为重建泰国西海岸的Thale Noi中的海平面变化的代理

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摘要

The n-alkanes content in the sedimentary sequence from Thale Noi, on the west coast of the Gulf of Thailand, was analyzed and used to reconstruct the past sea-level fluctuations. The results were further compared with those based on sediment characteristics, loss on ignition, grain size distribution, and pollen analysis from the same core to investigate the efficiency of n-alkanes as a paleoenvironmental proxy. The analysis of n-alkanes indicated the likely periods of regression and transgression from c. 8300?7950 cal. a BP and from c 7950?7665 cal. a BP that agrees well with the reconstructed sea-level changes from the sediment characteristics and pollen records. The steady abundance of mangrove pollen taxa in the sediment core points to a standstill in the sea-level from 7650?6870 cal. a BP. However, the results from the n-alkanes analysis further suggested a sea-level fall at c. 7650?7610 cal. a BP and at c. 7400?6870 cal. a BP, and a sea-level rise at c. 7610?7400 cal. a BP. Furthermore, these sea-level changes were intervened by short intervals of regression centered at c.7590 and 7470 cal. a BP.
机译：分析了泰国海湾西海岸的Thale Noi的沉积序列中的N-烷烃含量，并用于重建过去的海平面波动。与基于沉积物特征的那些，从同一核心，晶粒尺寸分布和花粉分析中的损失，从同一核心，研究结果，从同一核心进行比较，以研究N-烷烃作为古环境代理的效率。 N-烷烃的分析表明了来自C的可能性和侵犯的可能时期。 8300？7950 Cal。 BP和C 7950？7665 Cal。与重建的海平面变化相当的BP，从沉积物特征和花粉记录中变化。沉积物核心的红树林花粉队的稳定丰富点从7650年的海平面点静止到6870克。 BP。然而，N-烷烃分析的结果进一步提出了C的海平面下降。 7650？7610 Cal。 bp和c。 7400？6870 cal。 BP和C的海平面上升。 7610？7400 cal。 BP。此外，这些海平面变化是通过在C.7590和7470 Cal的速度短的短期间隔进行干预。 BP。

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