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Comparative post-IR IRSL (pIRIR(290)) K-feldspar age estimates for Qinghai Lake highstands: A comment

机译:比较后红外IRSL(Pirir(290))K-FELDSPAR年龄估计,青海湖展台:评论

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Using a post-IR IRSL (pIRIR(290)) K-feldspar luminescence dating method, Long et al. (2018) suggest the highest exposed shoreline features of Qinghai Lake date to early MIS 3. This age estimate is in conflict with a host of quartz and post-IR IRSL (pIRIR(29)(0)) K-feldspar luminescence age estimates suggesting lake highstands in other basins, which, like Qinghai Lake, are also fed by Qilian Mountains precipitation, date to MIS 5. We think the apparent conflict may be due to the use of different average water content estimates. Depending on whether estimates of 10-20% are used, many samples can date to anywhere from late MIS 5 to early MIS 3. It thus becomes critical that better ways to estimate water content must be developed before OSL chronologies can be used for understanding lake histories, and by extension, climatic change.
机译:使用后红外IRSL(Pirir(290))K-Feldspar发光约会方法,Long等人。 (2018)建议青海湖日期迄今为止最高的暴露海岸线特征3.这一年龄估计与一系列石英和红外伊尔德尔(Pirir(29)(0))K-feldspar发光年龄估计建议 在其他盆地的湖泊高层,如青海湖,也由祁连山降水,日期为MIS 5.我们认为明显的冲突可能是由于使用不同的平均水量估计。 取决于是否使用了10-20%的估计,许多样本可以从晚期MIS 5到早期MIS中的任何地方约会。因此,必须在OSL时间顺序使用之前开发更好的估计水含量的方法来实现估计水含量的更好方法 历史,并通过延伸,气候变化。

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