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首页> 外文期刊>Journal of Asian earth sciences >Luminescence chronology and palaeoenvironmental significance of limnic relics from the Badain Jaran Desert, northern China
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Luminescence chronology and palaeoenvironmental significance of limnic relics from the Badain Jaran Desert, northern China

机译：中国北方巴丹吉林沙漠中的石灰岩遗迹的发光年代学及其古环境意义

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摘要

The Badain Jaran Desert in northern China is well known for the highest mega-dunes on Earth and unique alternating megadune-lake landform, and various formation mechanisms have been proposed. Although the relics of interdune lakes are generally considered as good palaeoenvironmental records, their evolutions and relevance to paleoenvironment change are poorly understood due to limited age control. In this study, quartz optically stimulated luminescence (OSL) and K-feldspar post-infrared infrared stimulated luminescence (pIRIR) were used to establish a chronological framework for limnic relics in order to reconstruct the evolution of interdune lakes. Our results indicate that limnic relics were deposited in MIS 5 and MIS 1, due to a lake level transgression and humid environmental condition. During the Holocene, humid conditions occurred at early to middle Holocene, immediately preceded and followed by aridity. The last 600 years have been characterized by high rates of aeolian activity. Based on field observation and luminescence ages, we propose that climate fluctuations since the Late Pleistocene have played a pivotal role in the formation of the unique landform assemblages.
机译：中国北部的巴丹吉林沙漠以地球上最高的大型沙丘和独特的交替大沙丘湖地貌而闻名，并提出了各种形成机制。尽管人们普遍认为间湖的遗迹是良好的古环境记录，但是由于年龄的限制，人们对它们的演变及其与古环境变化的相关性了解甚少。在这项研究中，石英光学激发发光（OSL）和钾长石后红外红外激发发光（pIRIR）被用于建立木遗迹的年代学框架，以重建中度湖的演化。我们的结果表明，由于湖泊水位的侵袭和潮湿的环境条件，石灰岩遗物沉积在MIS 5和MIS 1中。在全新世期间，潮湿条件发生在全新世早期至中期，紧随其后是干旱。在过去的600年中，风沙活动率很高。基于野外观察和发光年龄，我们认为自晚更新世以来的气候波动在独特的地形组合形成中起着关键作用。

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  • 来源
    《Journal of Asian earth sciences》 |2019年第15期|240-249|共10页
  • 作者

    Chen Tianyuan; Lai Zhongping; Liu Siwen; Wang Yixuan; Wang Zhen-ting; Miao Xiaodong; An Fuyuan; Yu Lupeng; Han Fengqing;

  • 作者单位

    Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China|Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Geol & Environm Qinghai Prov, Xining 810008, Qinghai, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Shantou Univ, Inst Marine Sci, Shantou 515063, Peoples R China;

    Natl Res Ctr Geoanal, Beijing 100037, Peoples R China|Minist Nat Resources, Key Lab Ecogeochem, Beijing 100037, Peoples R China;

    Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China|Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Geol & Environm Qinghai Prov, Xining 810008, Qinghai, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China;

    Linyi Univ, Sch Resource & Environm Sci, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276000, Shandong, Peoples R China;

    Qinghai Normal Univ, Sch Geog Sci, Qinghai Prov Key Lab Phys Geog & Environm Proc, Xining 810008, Qinghai, Peoples R China;

    Linyi Univ, Sch Resource & Environm Sci, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276000, Shandong, Peoples R China;

    Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China|Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Geol & Environm Qinghai Prov, Xining 810008, Qinghai, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Badain Jaren Desert; Limnic relics; Late Quaternary; K-feldspar pIRIR dating; Quartz OSL dating;

    机译：巴丹贾伦沙漠;林姆遗迹;晚第四纪;钾长石pIRIR测年;石英OSL测年;

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