Luminescence-chronology of the loess palaeosol sequence Toshan, Northern Iran – A highly resolved climate archive for the last glacial–interglacial cycle
Luminescence-chronology of the loess palaeosol sequence Toshan, Northern Iran – A highly resolved climate archive for the last glacial–interglacial cycle
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伊朗北部托山黄土古土壤序列的发光年代学——最后一个冰期-间冰期周期的高度解析的气候档案
DOI：
10.1016/j.quaint.2015.03.045
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发表时间：
2017
影响因子：
2.2
通讯作者：
Khormali
中科院分区：
文献类型：
--
作者：
Frechen;Vlaminck;Lehndorff;Shahriari;Khormali
黄土-古土壤序列是恢复古环境的高分辨率档案，是联系欧洲和中亚黄土序列的重要纽带。对伊朗北方托山黄土古土壤序列建立了基于发光的年代学框架。研究了灰尘积累和土壤形成的时间，从而获得了该地区古环境条件变化的信息。对于释光测年，使用4-11 μm粒度级，并将pIRIR 290方法应用于多矿物。进行了有关漂白性、剂量恢复和异常褪色的试验。结果表明，剩余剂量对等效剂量的确定影响很小。Eemian（MIS 5e）土壤似乎被保存下来，但根据发光年龄对这种土壤进行年代学分类仍然很困难。从谱图的下部估计的pIRIR 290年龄范围为104 ± 9至127 ± 8 ka。发光年龄从中央轮廓部分点到MIS 4/MIS 3过渡周围开始的灰尘积累的增加。此外，年代框架interstadial土壤开发表明，例如，土壤形成在约40万年期间MIS 3和26万年期间MIS 2。剖面上部的年代约为22 ka。年龄估计表明，托山黄土剖面是一个高分辨率的黄土记录提供了宝贵的气候档案的最后一次冰期-间冰期周期反映了几个气候变化所代表的灰尘积累或增强程度的土壤形成（stadials和interstadials）。
Loess-palaeosol sequences are highly resolved archives for palaeoenvironmental reconstruction and build an important link to correlate European and Central Asian loess sequences. For the loess palaeosol sequence at Toshan, Northern Iran, a luminescence-based chronological framework was established. The timing of dust accumulation and soil formation was investigated and thereby information on changes in palaeoenvironmental conditions in the region obtained. For luminescence dating, the 4–11 μm grain size fraction was used and the pIRIR290approach was applied to polyminerals. Tests concerning bleachability, dose recovery and anomalous fading were conducted. The results show that residual doses have only minor influence on the determination of the equivalent dose. The Eemian (MIS 5e) soil seems to be preserved but a chronological classification based on luminescence ages for this soil remains difficult. The pIRIR290age estimates from the lower part of the profile range from 104 ± 9 to 127 ± 8 ka. Luminescence ages from the central profile-part point to an increase in dust accumulation starting around the MIS 4/MIS 3 transition. Furthermore, a chronological framework for interstadial soils was developed indicating e.g. soil formation at around 40 ka during MIS 3 and 26 ka during MIS 2. The top part of the profile was dated to about 22 ka. The age estimates show that the Toshan loess profile is a highly resolved loess record providing a valuable climate archive for the last glacial–interglacial cycle reflecting several climatic shifts represented by dust accumulation or enhanced degrees of soil formation (stadials and interstadials).
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影响因子：
4
作者：
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DOI：
--
发表时间：
2007
期刊：
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影响因子：
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影响因子：
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作者：
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DOI：
--
发表时间：
2014
期刊：
影响因子：
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作者：
T. Yanina
通讯作者：
T. Yanina