U-series dating applied to speleothems from Los Covachos Cave, South of Spain

被引：1
|
作者：
Alcaraz-Pelegrina, J. M. [1 ]
Martinez-Aguirre, A. [2 ]
Rodriguez-Vidal, J. [3 ]
机构：
[1] Univ Cordoba, Fac Ciencias, Dept Fis, Cordoba 14071, Spain
[2] Univ Seville, Dept Fis Aplicada 1, EUITA, Seville 41013, Spain
[3] Univ Huelva, Dept Geol, Palos De La Frontera 21819, Huelva, Spain
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 298卷 / 01期
关键词：
U-Th dating; Speleothem; Los Covachos Cave; IMPURE CARBONATES; DIRTY CALCITES; ABRIC-ROMANI; URANIUM; TERRACES; TH-230/U; DEPOSITS; VALLEY; ALPHA; BASIN;
D O I：
10.1007/s10967-013-2579-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
U-series dating method is applied to speleothems from Los Covachos Cave in the south of Spain. A combination of solvent extraction method with ion-exchange resins is used for uranium and thorium isotopes. Uranium concentrations are low and for younger samples correction by detrital contamination is necessary. Ages obtained range from 30 to 135 ky with a hiatus between 50 and 80 ky BP. Changes in uranium isotopes activity ratios indicate a change in climatic conditions.
引用
收藏
页码：87 / 94
页数：8
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