https://www.usgs.gov/publications/mesoproterozoic-beaverhead-impact-structure-and-its-tectonic-setting-montana-idaho
The mesoproterozoic Beaverhead impact structure and its tectonic setting, Montana-Idaho: 40Ar/39...
New 40Ar/39Ar and uranium-lead (U-Pb) zircon data from the Beaverhead impact structure, first identified by extensive shatter coning of Proterozoic quartzite...
beaverhead impact structuretectonic settingmesoproterozoicmontanaidaho