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Research drilling in Yellowstone National Park

By Yellowstone Volcano Observatory
Research drilling in Yellowstone National Park
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Detailed Description

Research drilling in Yellowstone National Park.  (A) is an image from Fenner (1936) of the drilling setup in the Upper Geyser Basin during the 1929 field season. (B) is an image from White et al. (1975) of the USGS drill rig set up in the Norris Geyser Basin in 1967-68 during a steam eruption.

Sources/Usage

Public Domain.