⁴⁰Ar/³⁹Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana /
Harlan, Stephen S.
Geological Survey (U.S.)
Reston, Va. : U.S. Geological Survey,
2005.
Includes bibliographical references (p. 18-19).
Geochronometry
Rocks, Igneous
Geology, Stratigraphic
Geology, Stratigraphic
Radioactive dating