Rock-magnetic characteristics and mechanisms of the Titel loess-paleosol sequence in northern Serbia since late Middle Pleistocene
Rock-magnetic characteristics and mechanisms of the Titel loess-paleosol sequence in northern Serbia since late Middle Pleistocene
复制标题
塞尔维亚北部中更新世晚期以来Titel黄土-古土壤层序的岩磁特征及机制
DOI：
10.1007/s11430-021-9854-7
复制
发表时间：
2022-01
期刊：
影响因子：
--
通讯作者：
Ruina HE
中科院分区：
文献类型：
--
作者：
Zhi Liu;Xiuming Liu;Slobodan B. MARKOVIĆ;Bin Lu;Ruina HE
东欧黄土沉积物磁性特征的变化规律与中国黄土高原的变化规律最为相似，都受成土作用强度的控制。因此，对东欧黄土岩石磁学的系统研究不仅有助于了解其自身保存的古气候信息，而且有助于促进对黄土记录中成土机制的认识。本文对采自塞尔维亚北方泰特尔黄土高原的70个黄土/古土壤样品进行了详细的岩石磁性分析，以更好地了解中更新世晚期以来的磁性记录。研究结果为我们提供了一些启示。第一，泰特尔黄土-古土壤序列中古土壤的磁化率值一般小于100×10− 8 m3 kg −1，明显低于气候条件相似的黄土剖面。然而，与这两个区域中的磁性粒子分布相关的参数的行为是相似的。亚铁磁性矿物含量的差异是造成它们磁性差异的主要原因，但其机理尚待进一步研究。其次，通过对热磁曲线的分析，发现在过去的四个冰期-间冰期旋回中，磁赤铁矿的相对含量有逐渐增加的趋势。中国黄土中热不稳定磁赤铁矿的发现使我们推测，泰特尔黄土-古土壤序列中磁赤铁矿相对含量的长期增加趋势很可能是潘诺尼亚盆地中更新世以来大陆性气候逐渐增强的矿物学响应。
The changing pattern of magnetic characteristics in eastern European loess deposits is the most similar across the world to that of the Chinese Loess Plateau, both of which are dominated by the strength of pedogenesis. Hence a systematical study to the rock magnetism of eastern European loess is not only helpful for understanding the paleoclimatic information preserved by themselves, but also beneficial for promoting the cognition of the pedogenic mechanism in loess records. In this study, a detailed rock-magnetic analysis of seventy loess/paleosol samples, taken from the Titel Loess Plateau in northern Serbia, is carried out for a better understanding of the magnetic records since late Middle Pleistocene. The results provide us some implications. First, the magnetic susceptibility values of the paleosols in the Titel loess-paleosol sequence are generally less than 100×10−8m3kg−1, significantly lower than those of the loess sections in the Chinese Loess Plateau, even though they are under similar climatic conditions. However, the behaviors of the parameters related to the distributions of magnetic particles in these two regions are similar. The difference in the contents of ferrimagnetic minerals is the leading reason that caused the difference in their magnetic characteristics, but the mechanism is still open to study. Second, based on the analysis of thermomagnetic curves, a gradually increasing trend of the relative contents of maghemite over the last four glacial-interglacial cycles is identified. The realization of thermally unstable maghemite from Chinese loess leads us to speculate that the long-term increasing trend of the relative contents of maghemite in Titel loess-paleosol sequence likely is a mineralogical response to the progressive enhancement of continental climate in the Pannonian Basin since the Middle Pleistocene.
登录
查看更多内容
影响因子：
64.8
作者：
L. Zhou;F. Oldfield;A. Wintle;S. Robinson;J. T. Wang
通讯作者：
L. Zhou;F. Oldfield;A. Wintle;S. Robinson;J. T. Wang
影响因子：
2.8
作者：
Dearing, JA;Bird, PM;Benjamin, SF
通讯作者：
Benjamin, SF
中国黄土L9的再磁化机制及新时代模型
影响因子：
2.3
作者：
Jin, Chunsheng;Liu, Qingsong
通讯作者：
Liu, Qingsong
影响因子：
2.2
作者：
Guoyong Zhao;Xiu-ming Liu;Qu Chen;Bin Lü;H. Niu;Zhi Liu;Pingyuan Li
通讯作者：
Guoyong Zhao;Xiu-ming Liu;Qu Chen;Bin Lü;H. Niu;Zhi Liu;Pingyuan Li
影响因子：
64.8
作者：
J. Beget;D. Hawkins
通讯作者：
J. Beget;D. Hawkins