TY - BOOK AU - Toth,Margo I. AU - Stacey,J.S. TI - Constraints on the formation of the Bitterroot lobe of the Idaho Batholith, Idaho and Montana, from U-Pb zircon geochronology and feldspar Pb isotopic data U1 - 552.309796 PY - 1992/// CY - Washington, DC PB - U.S. G.P.O. KW - Uranium-lead dating KW - Idaho Batholith (Idaho and Mont.) KW - Geology, Stratigraphic KW - Proterozoic N1 - Includes bibliographical references (p. 12-14) ER -