Investigating the Local Reservoir Age and Stable Isotopes of Shells from Southeast Arabia

Investigating the Local Reservoir Age and Stable Isotopes of Shells from Southeast Arabia
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调查当地储层年龄和来自阿拉伯东南部的贝壳的稳定同位素

DOI:
10.1017/rdc.2016.80
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发表时间:
2016
期刊:
影响因子:
8.3
通讯作者:
Hinderer
Hinderer
中科院分区:
地球科学4区
文献类型:
--
作者:
Lindauer;Marali;Schöne;Uerpmann;Kromer;Hinderer

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我们最近开始了一个系统的方法,以确定在阿拉伯半岛东南部的水库年龄及其对软体动物物种及其环境的依赖。本部分的研究集中在当地的水库年龄和稳定同位素的泻湖物种Terebralia palustris和Anadara uropigimelana在霍尔Kalba,阿曼海。环境和营养对软体动物的影响反映在放射性碳和稳定同位素信号中。我们发现当地的储层年龄为A。uropigimelana和T. palustris为800年。硬年代学分析得到了关于生长和死亡季节性的信息。uropigimelana。现代的网缘石螺(Periglypta reticulata)与阿纳达拉(Anadara sp.)共享食物资源和栖息地,我们没有找到现代的标本它提供了反映气候条件的泻湖系统适应性所需的对温度变化的反应的信息。我们感兴趣的碳途径的红树林在Kalba和红树林重新种植在前红树林沉积物在阿治曼。作为炭源和食物的T。palustris使这些信息成为必要。将进行进一步分析,将复杂泻湖系统中储层年龄的变化解释为对环境变异性的反应。
We recently started a systematic approach to determine the reservoir age in southeast Arabia and its dependence on mollusk species and their environment. This part of the study concentrates on local reservoir age and stable isotopes of the lagoonal species Terebralia palustris and Anadara uropigimelana at Khor Kalba, Oman Sea. Environmental and nutritive influences on mollusks are reflected in the radiocarbon and stable isotope signal. We found a local reservoir age of A. uropigimelana of about 940 yr and that of T. palustris as 800 yr. Sclerochronological analyses yielded information about seasonality of growth and death in A. uropigimelana. The modern shell of Periglypta reticulata shares food resources and habitat with Anadara sp., of which we did not find a modern specimen. It provided information on response to changes in temperature in the lagoonal system needed for suitability as reflecting climatic conditions. We were interested in carbon pathways of the mangrove in Kalba and a mangrove planted anew on a former mangrove sediment in Ajman. Being an obvious source of charcoal and food of T. palustris makes this information necessary. Further analyses will be performed to interpret changes in reservoir age in complex lagoonal systems as reaction to environmental variability.
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