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Triple drill rig, Niobrara Fm., Denver-Julesburg Basin, CO 2017
Visitors from the Chinese Academy of Sciences in the Black Hills with Dan, 2019
Dan at the Grand Canyon, 2019
Dan and two grad students collecting microbe samples from the 4100 ft level of the SURF, 2022
Axis of Sidling Hill syncline in road cut on I-68 in Maryland, 2016
SDSMT petroleum geology camp at Alcova Reservoir, Wyoming 2018
The Great Unconformity contact in Alcova Reservoir, WY 2018 Top photo: Halemaʻumaʻu Crater on Kilauea in Hawaii, 2021
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