Abstract
Introduction
General geology of the Battle Mountain mining district
Geology of the Copper Canyon area
Chemistry of the granodiorites
Major elements
Minor elements
Biotite compositions
Altered granodiorite of the Copper Canyon area
Granodiorites of the Long Peak and Timber Canyon areas
K-Ar ages
K-Ar analytical procedure and precision
Cretaceous granodiorite of Trenton Canyon
Tertiary granodiorite and altered granodiorite
Samples collected outside the Copper Canyon area
Copper Canyon area
Significance of the data
Summary
References cited.