Thermoluminescence dating of sand dunes in Rajasthan, India
Thermoluminescence dating of sand dunes in Rajasthan, India
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DOI：
10.1038/295313a0
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发表时间：
1982-01
期刊：
影响因子：
64.8
通讯作者：
A. Singhvi;Y. P. Sharma;Y. P. Sharma;D. P. Agrawal
中科院分区：
文献类型：
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作者：
A. Singhvi;Y. P. Sharma;Y. P. Sharma;D. P. Agrawal
本文报道了热释光（TL）在沙丘测年中的新应用。这种应用假定暴露在阳光下会使沉积物的地质TL漂白到一个残余值，并且当沉积物被埋在新的沉积物下并因此与太阳隔绝时，TL积累又开始了。虽然TL方法已经应用于黄土1,2和海洋沉积物3,4，但该技术在沙丘上的应用为沙丘动力学、古气候学和沙漠扩展提供了第一个可靠的测年控制。
We report here a new application of thermoluminescence (TL) for dating sand dunes. This application assumes that exposure to sunlight causes bleaching of the geological TL of a sediment to a residual value and that TL accumulation starts again when the sediment is buried under fresh deposit and is thus shielded from the Sun. Although the TL method has been applied to loess1,2and ocean sediments3,4, the application of this technique to sand dunes provides the first reliable dating control for dune dynamics, palaeoclimatology and spread of deserts.