@misc{indiciaef7db3609863d, title = {40Ar/39Ar age-spectrum data of Neogene and younger basalts in west central Colorado}, author = {Michael J. Kunk and Lawrence W. Snee}, year = {1998}, doi = {10.3133/ofr98243}, url = {https://pubs.usgs.gov/publication/ofr98243}, note = {Source identifier: ofr98243} }