doi:10.1002/nadc.19540020209No abstract is available for this article.John Wiley & Sons, Ltd.Nachrichten aus der Chemie
The age spectrum shows a small (7%) loss of radiogenic 40Ar from low temperature fractions. Ages of 698 ± 22 Ma and 560 ± 12 Ma were obtained from isochrons for the Jnisjrvi and Sksjrvi samples, respectively. Data obtained by laser degassing support the Sksjrvi result. The presence ...