2013
DOI: 10.1007/s10967-013-2579-7
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U-series dating applied to speleothems from Los Covachos Cave, South of Spain

Abstract: U-series dating method is applied to speleothems from Los Covachos Cave in the south of Spain. A combination of solvent extraction method with ionexchange 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.

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“…Finally ( Fig 11 ), it is worth noting that this reactivation of carbonate deposits on the karst during the range of ages obtained by the three 14 C/AMS results (for the hyena jaw in Sector 2, patina 2 and carbonates on the carinated endscraper), which are within virtually the final stages of MIS 3, was also documented on numerous outcrops in southern Iberia and on the coast (Gibraltar), as well as in the inner mountain ranges (Sierra Morena and Sierra de Grazalema) [ 47 , 48 , 49 , 50 , 51 ].…”
Section: Discussionmentioning
confidence: 99%
“…Finally ( Fig 11 ), it is worth noting that this reactivation of carbonate deposits on the karst during the range of ages obtained by the three 14 C/AMS results (for the hyena jaw in Sector 2, patina 2 and carbonates on the carinated endscraper), which are within virtually the final stages of MIS 3, was also documented on numerous outcrops in southern Iberia and on the coast (Gibraltar), as well as in the inner mountain ranges (Sierra Morena and Sierra de Grazalema) [ 47 , 48 , 49 , 50 , 51 ].…”
Section: Discussionmentioning
confidence: 99%