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Magnetic record of Mio-Pliocene red clay and Quaternary loess-paleosol sequence in the Chinese Loess Plateau

机译:黄土高原上新世上新世红黏土的磁记录及第四纪黄土古土壤序列

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This article presents magnetic data of a 300-m-thick Mio-Pliocene red clay and Quaternary loess-paleosol sequence near Chaona town in the Central Chinese Loess Plateau. Detailed magnetostratigraphy shows that the aeolian red clay began to accumulate at ca. 8.1Ma. Here, we presented a high-resolution rock magnetic data at 20–40cm intervals within 4.5–8ka span per sample of this section, which has been published in Song et al. (2014) and (2017) . The dataset including the following magnetic parameters: mass magnetic susceptibility ( χ ), frequency-dependent susceptibility ( χ fd ), saturation magnetization ( M s ), saturation remanent magnetization ( M rs ), coercive force ( B c ), remanent coercivity ( B cr ), saturation isothermal remanent magnetization (SIRM) and S-ratio. Magnetic susceptibility and hysteresis parameters were measured at Lanzhou University and Kyoto University, respectively. This data provides a high-resolution rock magnetic evidences for understanding East Asia Monsoon change, Asian interior aridification and tectonic effect of the uplift of the Tibetan Plateau since middle Miocene period.
机译:本文介绍了中国中部黄土高原Chauna镇附近一个厚度为300 m的Mio-上新世红粘土和第四纪黄土古土壤序列的磁数据。详细的地层学表明,风成红色粘土开始在约120处堆积。 8.1Ma。在这里,我们在本节的每个样本中以4.5–8ka跨度以20–40cm的间隔提供了高分辨率的岩石磁数据,该数据已在Song等人发表。 (2014)和(2017)。该数据集包括以下磁参数:质量磁化率(χ),频率相关的磁化率(χfd),饱和磁化强度(M s),饱和剩磁强度(M rs),矫顽力(B c),剩磁矫顽力(B cr),饱和等温剩余磁化强度(SIRM)和S比。磁化率和磁滞参数分别在兰州大学和京都大学测量。该数据为中东新世中期以来了解东亚季风变化,亚洲内部干旱化和青藏高原隆升的构造效应提供了高分辨率的岩石证据。

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