TY - RPRT TI - 40Ar-39Ar dating of the Manson impact structure: A Cretaceous-Tertiary boundary crater candidate AU - Michael J. Kunk AU - G. A. Izett AU - R. A. Haugerud AU - J. F. Sutter PY - 1989 DO - 10.1126/science.244.4912.1565 UR - https://pubs.usgs.gov/publication/70015456 ID - 70015456 ER -