@misc{indiciae8fdcf17cbddd, title = {The mesoproterozoic Beaverhead impact structure and its tectonic setting, Montana-Idaho: 40Ar/39 and U-Pb isotopic constraints}, author = {K.S. Kellogg and L.W. Snee and D.M. Unruh}, year = {2003}, url = {https://pubs.usgs.gov/publication/70024931}, note = {Source identifier: 70024931} }