Photograph (left) and partially stained photomicrograph (right)

Photograph (left) and partially stained photomicrograph (right)

Detailed Description

Photograph (left) and partially stained photomicrograph (right) of a layered phreatic speleothem from the lower passages of Wind Cave National Park, South Dakota. Photograph shows millimeter-scale subsamples analyzed for U-series disequilibrium dating plus 87Sr/86Sr, 234U/238U, δ18O, and δ13C analyses. (Photo credit: James Paces, Margaret Palmer)

Details

Image Dimensions: 1319 x 462

Location Taken: US

Credits

Photos:  James Paces and Margaret Palmer