Inside USGS, No. 3, Robert Fournier, Yellowstone
Detailed Description
USGS emeritus geologist RobertFournier describes his career working on Yellowstone geysers and hydrothermal systems from the 1960's through 2014. Bob's work along with his USGS colleagues revealed the details of Yellowstone's explosive volcanic past and how its spectacular geysers and other hydrothermal features work.
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Sources/Usage
Public Domain.