The Feasibility of Using Melanopsis Shells as Radiocarbon Chronometers, Lake Kinneret, Israel
The Feasibility of Using Melanopsis Shells as Radiocarbon Chronometers, Lake Kinneret, Israel
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使用 Melanopsis 贝壳作为放射性碳计时器的可行性，以色列基内雷特湖
DOI：
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发表时间：
2007
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影响因子：
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通讯作者：
M. Stein
中科院分区：
文献类型：
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作者：
L. Lev;E. Boaretto;J. Heller;S. Marco;M. Stein
我们研究了在以色列约旦河谷地，利用黑果壳作为古湖泊和泉水的放射性碳计时器的可行性。为此，我们分析了约旦河谷北部和基尼雷湖(加利利海)不同淡水水体中活黑藻贝壳中文石的14C含量，并将其与同时代的水值进行了比较。黑藻的贝壳与其栖息地的水处于14C的平衡状态，允许为不同的水类型指定特定的水库年龄。我们测量了金内特湖的∼750年，约旦北部的∼230年，金内特北部泉水的∼4600年，以及直接从碳酸盐含水层流出的溪流的∼7200年。这些结果通过对已知年代的黑果壳化石的分析得到了检验和证实，这些贝壳是用同时代的有机质测量的。结果表明，黑果壳是一种可靠的14C计时器，具有作为古水文示踪剂的潜力。
We investigated the feasibility of using Melanopsis shells as radiocarbon chronometers of paleolakes and springs in the Jordan Valley, Israel. For this purpose, we analyzed the 14C content of aragonite of living Melanopsis shells from different freshwater bodies of the northern Jordan Valley and Lake Kinneret (Sea of Galilee) and compared them to the contemporaneous water values. The Melanopsis shells are in 14C equilibrium with their habitat waters, allowing to specify a particular reservoir age for various water types. We measured ∼750 yr for Lake Kinneret, ∼2300 yr for northern Jordan, ∼4600 yr for springs in the north Kinneret, and ∼7200 yr for streams flowing directly from carbonate aquifers. These results were tested and corroborated by analyzing fossil Melanopsis shells of known age, measured on contemporaneous organic matter. We conclude that Melanopsis shells are reliable 14C chronometers and have the potential to be used as paleohydrological tracers.