Fig. 4From: Improvement of 40Ar/39Ar age determinations for Quaternary basaltic rocks by eliminating the peak suppression effectAge probability diagrams of the basaltic rock. Left and right diagrams represent the 40Ar/39Ar ages of multiple aliquots using the original and modified gas preparation protocol, respectively. Note that the the precision of multiple aliquot analysis is significantly improved by using the modified cleaning protocolBack to article page