Table of Contents

Arizona Geological Society Digest 21

Desert Heat – Volcanic Fire

The Geologic History of the Tucson Mountains and Southern Arizona

edited by D.A. Kring

104 p., softbound, 2002

Chapter Pages
Introduction
The Tucson Mountains
Types of igneous rocks
Types of volcanoes
The Cretaceous seas of southern Arizona and the Rocky Mountain region map of Amole Lake sedimentary rocks
Amole Lake
Pre-caldera stratovolcanoes; Map of Late Cretaceous igneous rocks
The Tucson Mountains volcanic caldera, ash-flow tuffs, chaotic megabreccias, post-collapse lava flows, and magmatic intrusions
The Southern Arizone Caldera Field
How long does it take to build a volcano?
Rock formations in the Tucson Mountains
Convergent Plate margins and the Laramide Orogeny – Map of Mid-Tertiary volcanic rocks
Mid-Tertiary volcanism
Mineralization
Porphyry copper deposits
Detachment faulting and the roots of the Tucson Mountains volcanic caldera
Ice-age mammals
Recent sedimentary and erosional processes