Abstract
Introduction
Location and objectives
Acknowledgments
Structural features
Southwestern structural unit
San Cayetano block
Grosvenor Hills block
Montosa Canyon block
Salero block
Santa Rita fault scar
Central structural unit
Mount Wrightson block
Adobe Canyon block
Sawmill Canyon faultl zone
Northeastern structural unit
Greaterville block
Rosemont block
Helvetia block
Tear faults
Thrust faults
Folds
Dikes
Range-front faults
Structural development
Pre-Laramide deformation
Laramide Orogeny
Piman phase
Mid-Laramide quiescent time
Helvetian phase
Post-Laramide deformation
References cited.