TY  - RPRT
TI  - Paleomagnetic and 40Ar/39Ar geochronologic data from late Proterozoic mafic dikes and sills, Montana and Wyoming
AU  - Stephen S. Harlan
AU  - John William Geissman
AU  - Lawrence W. Snee
PY  - 1997
DO  - 10.3133/pp1580
UR  - https://pubs.usgs.gov/publication/pp1580
ID  - pp1580
ER  -