全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
湖泊科学  2015 

毛乌素沙地东南缘全新世湖相地层石英和钾长石释光测年对比

DOI: 10.18307/2015.0322

Keywords: 毛乌素沙地,湖相沉积,石英,钾长石,光释光测年,全新世

Full-Text   Cite this paper   Add to My Lib

Abstract:

采集来自毛乌素沙地东南缘巴图湾、大沟湾和三岔河等3处典型湖相地层出露点的3个样品,分别提取石英和钾长石矿物组分,采用小片技术(样品直径2mm)进行释光年代测试,并将两种矿物年代结果进行对比研究.应用单片再生剂量(SAR)流程测试了石英样品的等效剂量(预热温度选为260℃).剂量恢复实验和光释光特性显示,SAR流程测试条件选择合适,样品沉积前光释光信号晒退完全,说明石英年代结果可靠.另外,应用两步红外激发(激发温度分别为50℃和150℃)的单片再生剂量流程(post-infraredinfrared-stimulatedluminescence,简写为pIRIR流程)测试钾长石样品的等效剂量,剂量恢复实验和释光特性等各项检验均符合要求,剩余剂量在-0.2~0.026Gy之间,可忽略不计.钾长石的pIRIR150信号异常衰减速率为0.55~1.71(%/decade),因造成的误差较小,故无需对年代结果进行校正.3处湖相地层的石英年代分别为11.3±0.9、6.5±0.6、2.7±0.2kaBP,钾长石pIRIR150年代分别为10.0±0.7、6.9±0.5、2.4±0.2kaBP,两者在误差范围内一致,说明毛乌素沙地东南缘的全新世湖相沉积物适合用钾长石pIRIR150流程进行释光测年.本研究为毛乌素沙地部分样品因石英信号较弱而无法测年问题提供了解决办法,也为该区域全新世,尤其是历史时期(近2000年)以来的环境变化研究提供了年代学支撑.

References

[1]  Long H, Lai ZP, Frenzel P et al. Holocene moist period recorded by the chronostratigraphy of a lake sedimentary sequence from Lake Tangra Yumco on the south Tibetan Plateau. Quaternary Geochronology, 2012, 10:136-142.
[2]  Long H, Lai ZP, Fuchs M et al. Timing of Late Quaternary palaeolake evolution in Tengger Desert of northern China and its possible forcing mechanisms. Global and Planetary Change, 2012, 92:119-129.
[3]  Wintle AG. Anomalous fading of thermo-luminescence in mineral samples. Nature, 1973, 245(5421):143-144.
[4]  Huntley DJ, Lian OB. Some observations on tunnelling of trapped electrons in feldspars and their implications for optical dating. Quaternary Science Reviews, 2006, 25(19):2503-2512.
[5]  Thomsen KJ,Murray AS, Jain M et al. Laboratory fading rates of various luminescence signals from feldspar-rich sediment extracts. Radiation Measurements, 2008, 43(9):1474-1486.
[6]  Madsen AT, Buylaert JP,Murray AS. Luminescence dating of young coastal deposits from New Zealand using feldspar. Geochronometria, 2011, 38(4):379-390.
[7]  Li B, Li SH. Luminescence dating of K-feldspar from sediments:a protocol without anomalous fading correction. Quaternary Geochronology, 2011, 6(5):468-479.
[8]  Fu X, Li B, Li SH. Testing a multi-step post-IR IRSL dating method using polymineral fine grains from Chinese loess. Quaternary Geochronology, 2012, 10:8-15.
[9]  Li B, Li SH. Luminescence dating of Chinese loess beyond 130 ka using the non-fading signal from K-feldspar. Quaternary Geochronology, 2012, 10:24-31.
[10]  Murray AS, Thomsen KJ, Masuda N et al. Identifying well-bleached quartz using the different bleaching rates of quartz and feldspar luminescence signals. Radiation Measurements, 2012, 47(9):688-695.
[11]  Reimann T, Tsukamoto S. Dating the recent past (<500 years) by post-IR IRSL feldspar-Examples from the North Sea and Baltic Sea coast. Quaternary Geochronology, 2012, 10:180-187.
[12]  董光荣, 李保生, 高尚玉等. 鄂尔多斯高原的第四纪古风成沙. 地理学报, 1983, 38(4):341-347.
[13]  苏志珠, 董光荣. 萨拉乌苏组地层年代学研究. 地质力学学报, 1997, 3(4):90-96.
[14]  李保生, 靳鹤龄,吕海燕等.150ka 以来毛乌素沙漠的堆积与变迁过程. 中国科学:D 辑:地球科学, 1998, 28(1):85-90.
[15]  侯仁之. 从红柳河上的古城废墟看毛乌素沙漠的变迁. 文物, 1973, (1):35-41.
[16]  王乃昂, 何彤慧, 黄银洲等. 六胡州古城址的发现及其环境意义. 中国历史地理论丛, 2006, 21(3):36-46.
[17]  黄银洲, 王乃昂, 何彤慧等. 毛乌素沙地历史沙漠化过程与人地关系. 地理科学, 2009, 29(2):206-211.
[18]  黄银洲, 王乃昂, 何彤慧等. 明代边墙修筑时毛乌素沙地范围探讨. 干旱区研究, 2009,26(2):261-266.
[19]  Dong G, Su Z, Jin H. New views on age of the Salawusu Formation of Late Pleistocene in northern China. Chinese Science Bulletin, 1999, 44(7):646-650.
[20]  刘 凯, 赖忠平, 樊启顺等. 萨拉乌苏地区末次冰期酒坊台剖面光释光年代及其环境意义. 盐湖研究, 2010, 3(18):1-7.
[21]  胡 珂, 莫多闻, 王 辉等. 萨拉乌苏河两岸宋(西夏)元前后的环境变化与人类活动. 北京大学学报:自然科学版, 2011, 47(3):466-474.
[22]  Liu K, Lai ZP. Chronology of Holocene sediments from the archaeological Salawusu site in the Mu Us Desert in China and its palaeoenvironmental implications. Journal of Asian Earth Sciences, 2012, 45:247-255.
[23]  Long H, Lai ZP, Wang NA et al. A combined luminescence and radiocarbon dating study of Holocene lacustrine sediments from arid northern China. Quaternary Geochronology, 2011, 6(1):1-9.
[24]  Stokes S, Thomas DSG, Washington R. Multiple episodes of aridity in southernAfrica since the last interglacial period. Nature, 1997, 388(6638):154-158.
[25]  Goble RJ, Mason JA, Loope DB et al. Optical and radiocarbon ages of stacked paleosols and dune sands in the Nebraska Sand Hills, USA. Quaternary Science Reviews, 2004, 23(9):1173-1182.
[26]  Forman SL, Marín L, Gomez J et al. Late Quaternary eolian sand depositional record for southwestern Kansas:landscape sensitivity to droughts. Palaeogeography, Palaeoclimatology, Palaeoecology, 2008, 265(1):107-120.
[27]  Chase B. Evaluating the use of dune sediments as a proxy for palaeo-aridity:a southern African case study. Earth-Science Reviews, 2009, 93(1):31-45.
[28]  Lu H, Zhao C, Mason J et al. Holocene climatic changes revealed by aeolian deposits from the Qinghai Lake area (northeastern Qinghai-Tibetan Plateau) and possible forcing mechanisms. The Holocene, 2010,21(2):297-304.
[29]  He Z, Zhou J, Lai ZP et al. Quartz OSL dating of sand dunes of Late Pleistocene in the Mu Us Desert in northern China. Quaternary Geochronology, 2010, 5(2):102-106.
[30]  Long H, Lai ZP, Fuchs M et al. Palaeodunes intercalated in loess strata from the western Chinese Loess Plateau:Timing and palaeoclimatic implications. Quaternary International, 2012, 263:37-45.
[31]  赵 华, 卢演俦, 尹金辉. 科尔沁沙地全新世风沙沉积物的石英单测片蓝光释光测年和风沙活动年学. 核技术, 2005, 28(5):367-374.
[32]  更多...
[33]  弋双文, 鹿化煜, 周亚利等. 晚第四纪科尔沁沙地干湿变化的黄土记录. 中国沙漠, 2006, 26(6):869-874.
[34]  周亚利, 鹿化煜, Mason JA等. 浑善达克沙地的光释光年代序列与全新世气候变化. 中国科学:D辑:地球科学, 2008, 38(4):452-462.
[35]  杨林海, 赖忠平, 周 杰等. 光释光测年和孢粉分析揭示的晚冰期以来科尔沁沙地演化过程. 地理科学, 2011, 31(6):695-701.
[36]  Murray AS, Olley JM. Precision and accuracy in the optically stimulated luminescence dating of sedimentary quartz:a status review. Geochronometria, 2002, 21(1):1-16.
[37]  Forman SL, Marin L, Pierson J et al. Aeolian sand depositional records from western Nebraska:landscape response to droughts in the past 1500 years. The Holocene, 2005, 15(7):973-981.
[38]  Mason JA, Lu H, Zhou Y et al. Dune mobility and aridity at the desert margin of northern China at a time of peak monsoon strength. Geology, 2009, 37(10):947-950.
[39]  Fu X, Li SH. A modified multi-elevated-temperature post-IR IRSL protocol for dating Holocene sediments using K-feldspar. Quaternary Geochronology, 2013, 17:44-54.
[40]  Long H, Shen J, Tsukamoto S et al. Dry early Holocene revealed by sand dune accumulation chronology in Bayanbulak Basin (Xinjiang, NW China). The Holocene, 2014, 24:614-626.
[41]  Long H,Haberzettl T, Tsukamoto S et al. Luminescence dating of lacustrine sediments from Tangra Yumco (southern Tibetan Plateau) using post-IR IRSL signals from polymineral grains. Boreas, 2015, 44:139-152.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133