Researching ancestral pathways/channels of the Yellowstone River in Montana. If anyone can provide input and or resources, that would be appreciated. The purpose is to understand the development of the Yellowstone River in order to map its ancient river channels.
If the bedrock is shallow, you might look for buried bedrock valleys. This is usually done by mapping the bedrock surface by drilling until refusal, or using geophysics (i.e., seismic, ground penetrating radar, electrical resistivity) to identify erosion of the bedrock surface.
See Steelman, C.M., Arnaud, E., Pehme, P. and Parker, B.L., 2018. Geophysical, geological, and hydrogeological characterization of a tributary buried bedrock valley in southern Ontario. Canadian Journal of Earth Sciences, 55(7), pp.641-658.
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