Tag Archives: US Geological Survey

Main image: USGS geologist G. K. Gilbert climbing an outcrop near Berkeley, California, around 1906. Inset: A photo from around 1891 showing Gilbert's experiments that demonstrated the formation of impact craters by throwing balls of hard clay into soft clay.
1879: The Evolution of the United States Geological Survey – The Legacy of G. K. Gilbert

The US Geological Survey, founded in 1879, was pivotal in exploring America's expanding territories. Notable geologist G. K. Gilbert's contributions, especially in understanding the Meteor Crater, underscored the agency's role in advancing geological knowledge, which [...]