Griffiths, S., Bayliss, A., Ford, B., Hounslow, M., Karloukski, V., Bronk Ramsey, C., Cook, G., and Marshall, P.
Some 250 miles south of Portland, Oregon, Crater Lake is the deepest lake in the United States. It was once the top of Mount Mazama, a supervolcano in the Cascade Range that towered over 12,000 feet above sea level.
The rain that then came to put out the fires filled the crater to form Crater Lake, a sacred site which they kept secret from outsiders until a white settler accidentally discovered it in 1852.
For archaeologists, understanding Mount Mazama is critical to understanding their cultural history.
Mount Mazama itself is made up of many smaller shield volcanoes and stratovolcanoes that, through time, eruptions, and glaciation merged into one supervolcano before its ultimate eruption and collapse.
Remnants of the cones of these other volcanoes remain, and geologists and archaeologists can date the lava they erupted to find how Mount Mazama itself evolved.
One of the limitations is that it requires a lot of extra information about the archaeological site such as radiation levels, which may not be accessible if artefacts have already been sitting in a museum for many years.
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Moira Wilson of the University of Manchester and her team document how “rehydroxlation dating” has so far dated objects up to 2000 years old, and they believe it could extend back as far as 10, 000 years.
“Given the number and intensity of [dating] debates in archaeology, there is a huge gap in the field for this,” Wilson told