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首页> 外文期刊>Quaternary International >Climatically- and tectonically-controlled development of the late quaternary alluvial fan in the north piedmont of Zhongtiao Shan (ZTS), north China
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Climatically- and tectonically-controlled development of the late quaternary alluvial fan in the north piedmont of Zhongtiao Shan (ZTS), north China

机译：中国北山（ZTS）北山麓的后期四元强化粉丝的高潮和整体上控制发展

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摘要

The evolution of alluvial fans is controlled by the tectonic setting and climatic fluctuations. This study focused on the Lidian alluvial fan in the northern piedmont of Zhongtiao Shan, north China, to study the fluvial responses to paleoenvironmental changes since the late Last Glacial Maximum. In combination with series of accelerator mass spectrometry (AMS) 14C dating data on fan sediments, sedimentary analyses indicated that the primary fan accumulation was controlled by episodic millennium-scale debris and sheet flood flow related aggradation during 13.3-13.0, 12.7-11.3, 6.2-4.5, and 4.5-2.8 cal ka BP. Between the accumulation periods, the fan process was dominated by aeolian paleosol-and-loess sequence development and the reworking of fan clasts. Considering regional hydraulic conditions and sediment flux, we proposed that the millennium-scale episodic debris flow related fan aggradation during 13.3-13.0, 12.7-11.3, and 4.5-2.8 cal ka BP was controlled by high-volume sediment influx of the permafrost and physical weathering during cold events. The millennium-scale sheet flood-dominated fan aggradation event during 6.2-4.5 cal ka BP was related to the abrupt coarsening and high sediment yield forced by tectonic uplift. We also suggest that the scattered distributed channelized floods and debris backfilling sediments within the fine-grain layers indicate that the deposition of irregular fan lobe accumulation coincided with hydraulic shifts over shorter temporal scales.
机译：冲积球迷的演变由构造环境和气候波动控制。本研究专注于北京中山北部山麓的潮汐冲积粉丝，以便自上次冰川最大次数以来研究苍白环境变化的河流反应。结合系列加速器质谱（AMS）14C在风扇沉积物上的数据数据数据，沉积分析表明，初级风扇积累是由情节千年规模碎片和板洪流量相关的综合加剧，12.7-11.3,6.2 -4.5和4.5-2.8 Cal Ka BP。在累积期间，风扇工艺由风扇古溶解和黄土序列开发和粉丝泥浆的重新加工为主。考虑到区域液压条件和沉积物助焊剂，建议在13.3-13.0,12.7-11.3和4.5-2.8克拉BP控制期间，千年级巨型碎片流量相关风扇委员会受到永久冻土和物理的大量沉积物涌入控制在冷事件期间风化。在6.2-4.5 Cal Ka BP期间，千年规模的薄片泛滥主导的风扇委员会汇总事件与构造隆起强制突然的粗化和高沉积物相关。我们还建议，微晶片层内的散射分布声道泛滥和碎片回填沉积物表明，不规则风扇叶积累的沉积与液压刻度相一致。

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  • 来源
    《Quaternary International》 |2021年第10期|51-59|共9页
  • 作者

    Hu Xiu; Li Youli; Lv Shenghua; Wang Yiran; Xiong Jianguo;

  • 作者单位

    Peking Univ Key Lab Earth Surface Proc Minist Educ Beijing 100871 Peoples R China;

    Peking Univ Key Lab Earth Surface Proc Minist Educ Beijing 100871 Peoples R China;

    Qingdao Inst Marine Geol Key Lab Marine Environm Geol Minist Nat Resources Qingdao 266071 Shandong Peoples R China;

    Peking Univ Key Lab Earth Surface Proc Minist Educ Beijing 100871 Peoples R China;

    Peking Univ Key Lab Earth Surface Proc Minist Educ Beijing 100871 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Alluvial fan; Holocene; Zhongtiao Shan; Climate change;

    机译：alluvial fan;Holocene;Z红条s韓;climate change;

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