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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第26卷

期数:

2004年第02期

页码:

85-87

栏目:

出版日期:

2004-06-20

文章信息/Info

Title:

Separation of quartz from loess in luminescence dating

作者:

黄土释光测年中石英的分离 陈淑娥¹; 黄春长²; 李虎侯³; 付淑清¹; 丁仨平⁴

1.长安大学地球科学与国土资源学院,陕西西安710054;2.陕西师范大学旅游与环境学院,陕西西安710062; 3.首都师范大学资源与环境学院,北京100037;4.甘肃省地矿局第三地质调查勘查院,甘肃兰州730050

Author(s):

CHEN Shu-e¹; HUANG Chun-chang²; LI Hu-hou³; FU Shu-qing¹; DING Sa-ping⁴

1.School of Earth Sciences and Resources Management,Chang′an University,Xi′an 710054,China;2.College of Tourism and Environment Sciences,Shaanxi Normal University, Xi′an 710054,China;3.Capital Normal University, Beijing 100037,China; 4. Third Survey Insti

关键词:

释光测年; 石英; 分离; 溶蚀; 黄土

Keywords:

luminescence dating ; quartz; separation ; etch ; loess

分类号:

P533

DOI:

-

文献标志码:

A

摘要:

根据黄土样品和40～90μm纯石英和长石的氢氟酸HF)和氟硅酸H2SiF6)溶蚀实验,认为黄 土样品用40%氢氟酸溶蚀40min,尽管可以全部溶蚀掉长石,但对石英的损失太大,不适合黄土中石英 的分离。用30%氟硅酸20mL/g)溶蚀6d,溶蚀分离黄土中40～90μm的石英颗粒,这样即可以溶蚀 掉长石颗粒,又对石英损失较小。石英的纯度既可用IRSL来检测,也可用石英的110℃热释光TL)峰 来检测其纯度。

Abstract:

When quartz fraction is cleaned of feldspar grains by etching in concentrated HF for 40min,more quartz fraction is etched away,and this method may be not suitable for the purity of quartz in loess.As quartz fraction in loess is separated by the tedious process of etching with fluorosilicic acid for about 6 days,20ml 30% fluorosilicic acid per gram,not only the feldsparsin loess can be removed completely, but also less quartz is etched away.The purification of quartz can be checked up not only by IRSL,but also by 110℃ TL peak of quartz.

参考文献/References:

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[3] 李虎侯.热释光断代[M] .S cienti st Press International , Inc. 1999 .
[4] 王维达.考古物质的热释光测定年代[A] .王维达主编.中 国热释光与电子自旋共振测定年代研究[C] .北京:中国计 量出版社, 1997 .58 ～ 92 .
[5] Bailey S D , Wintle A G , Duller G A T , et al.Sand deposition during the last millennium at Aberf f raw , Anglesey , North Walses as determined by OSL of quartz[J] .Quaternary Science Review s , 2001 , 20 :701 ～ 704 .
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[7] Radtke U , Janot ta A, Hilgers A , et al.The pot ent ial of OSL and TL for dating Lateglacial and Holocene dune sand test ed with independent age cont rol of the Laacher See t ephra12 880 a)at the Section ' Mainz-Gonsenheim' [J] .Quaternary Science Review s , 2001 , 20 :719 ～ 724 .
[8] 刘东生.黄土与环境[M] .北京:科学出版社, 1985 .
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[10] Mu rray A S .Incomplete stimulation of luminescence in young quartz sediments and i ts ef fect on the regenerat ed signal[J] .Radiation Measurement s , 1996 , 26 :221 ～ 231 .
[11] Folz E, Bodu P , Bonte P , et al.OSL dat ing of fluvial quartz Le Closeau, a Late Paleolithic site near Paris-comparison with 1C4 chronology[J] .Quaternary Science Reviews , 2001 , 20 :927 ～ 933 .

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备注/Memo

备注/Memo:

[收稿日期]2003-04-18
[基金项目]国家自然科学基金项目40071006)
[作者简介]陈淑娥1964-),女,陕西三原人,副教授,博士,现从事古生物地层学、第四纪年代学研究。

常用功能

更新日期/Last Update: 2004-06-20