To obtain subsurface geologic information about the alluvium in the Big Thompson River valley, S-wave refraction data were collected along three roads that cross the valley. The refraction data were used to estimate velocities and thickness for a layered-earth model; from these models, three cross sections of the river valley were constructed. These cross sections show the thickness and the gross stratigraphy of the alluvium.
Additional publication details
USGS Numbered Series
Assessment of the alluvial sediments in the Big Thompson River Valley, Colorado
U.S. Geological Survey
Geology, Geophysics, and Geochemistry Science Center