Asian Monsoon variation over the late Neogene–early Quaternary recorded by Anisotropy of Magnetic Susceptibility (AMS) from Chinese loess
Asian Monsoon variation over the late Neogene–early Quaternary recorded by Anisotropy of Magnetic Susceptibility (AMS) from Chinese loess
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中国黄土磁化率各向异性（AMS）记录的新近纪晚期至第四纪早期的亚洲季风变化
DOI：
10.1016/j.quaint.2015.04.061
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发表时间：
2016-04
影响因子：
2.2
通讯作者：
Qiufang Chang
中科院分区：
文献类型：
--
作者：
Feng Xian;Zhenkun Wu;Xianghui Kong;Qiufang Chang
本文讨论了黄土高原南缘蓝田黄土剖面新近纪晚期至第四纪早期磁化率记录的各向异性。AMS结果表明，该网站反映了古季风方向的变化。蓝田黄土沉积物主要是风成的，但也包括一个薄层，表现出次生水沉积的特点。黄土样品中的主椭球轴AMS方位表明，自晚第三纪以来，普遍存在西北-东南方向的分量。从那时起，W-E分量逐渐超过N-S分量，这可能解释了这段时间干旱度增加的趋势。最后，蓝田地区在2.6Ma左右发生了一次强降水事件，这可能是导致L33层沉积物水相再沉积的原因。
This paper discusses the Anisotropy of Magnetic Susceptibility (AMS) records during late Neogene to early Quaternary from the Lantian loess section near the southern margin of the Chinese Loess Plateau. The AMS results for this site are shown to reflect variations in the direction of the paleomonsoon. The Lantian loess sediments are largely aeolian in origin, but also include a thin layer that exhibits secondary aqueous depositional features. The major ellipsoid axis AMS orientations in the loess samples indicate a pervasive Northwest–Southeast directional component since the late Neogene. Since that time, the W–E component gradually overtakes the N–S component, which may explain the trend toward increased aridity during that time. Finally, a local heavy rainfall event seemingly occurred in the Lantian region about 2.6 Ma, which may have been responsible for the aqueous redeposition of sediments observed in L33layer in this study.
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影响因子：
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