Argon-40/argon-39 Dating Pioneer
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isotope geochemistryGuardian
•Grenville Turner, who died aged 87 from a brain tumour, pioneered the argon-40/argon-39 method of radioactive dating
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Grenville Turner pioneered the method prior to becoming one of the few British scientists to be employed by Nasa as a principal investigator on the Apollo programme.
He provided the technique to precisely date the tiny but irreplaceable rock samples brought back by the astronauts of the Apollo moon landings programme.
In 2020 the British Antarctic Survey named a nunatak (an outcrop of rock protruding through an icefield) after him, following the discovery of a meteorite there.
Turner was notably modest about his achievements, preferring to share his knowledge and so encourage others to follow scientific careers.
Apart from academic work he enjoyed photography, walking and visiting the theatre.
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