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Wiens has a Ph D in Physics, with a minor in Geology.
His Ph D thesis was on isotope ratios in meteorites, including surface exposure dating.
The typical turn-round time for providing a date is circa 3-4 months, although, rapid dating (circa 4-6 weeks or sometimes less, depending on machine time and sample type) using our fast track service can be undertaken.
OSL dating results including Dose equivalent (De) estimate, dose rate measurement and calculated age will be reported as a short pdf document by email.
Occasionally menstruation does not occur at puberty; this is known as primary amenorrhea.