TY  - RPRT
TI  - The Manson Impact Structure: 40Ar/39Ar age and its distal impact ejecta in the Pierre Shale in southeastern South Dakota
AU  - G. A. Izett
AU  - W. A. Cobban
AU  - J. Obradovich
AU  - Michael J. Kunk
PY  - 1993
DO  - 10.1126/science.262.5134.729
UR  - https://pubs.usgs.gov/publication/70210407
ID  - 70210407
ER  -