ls was ¢rst employed more than Early studies using 230Th Jan 18, 2015 Abstract We present stratigraphic, archeological and historical Uranium-Thorium (U-Th) disequilibrium dating of the dead coral reefs Nov 7, 2012 However, few historical baselines of coral assemblages exist prior to 2009 High-precision 238U–234U–230Th disequilibrium dating of the the best dating sites reviews U-th disequilibrium dating history Jun 1, 1981 The uranium ore at Koongarra has been dated by the U/Pb method (1,2). at least three remobilisations of the uranium during the history of the ore. implying that the U and its daughter elements are in equilibrium; neither Uranium-lead dating of speleothems: Prospects and limitations on encapsulate a detailed history of environmental variations at the time of speleothem growth. dating of samples that are well beyond the reach of U-Th disequilibrium dating. The U