Compston, William; Clement, Stephen
Andersen and Hinthorne reported in situ Pb isotope ages for lunar minerals in the early 1970s. 'Peak stripping' was used to subtract isobaric interferences but it worked only for old, U-rich targets. Jim Long entered the race for in situ mineral dating using high resolution to separate isobars. Despite low sensitivity, he achieved 207Pb/206Pb dating of zircons in the late 1970s. In 1980 we finished the large instrument SHRIMP I based on the magnetic analyser design of Matsuda that delivered...[Show more]
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.