Table of Contents
Introduction vii
Part 1 Pre-Valles Caldera Geology
Early Geologic Events and Old Rocks 3
The Supercontinent Pangaea 9
The Western Interior Seaway of North America 11
The Cretaceous-Tertiary Extinction 13
The Colorado Plateau 17
The Rio Grande Rift: Structure, Sedimentation, and Volcanism 19
The Jemez Lineament 27
Part 2 Geology of Jemez Volcanic Field and Valles Caldera
Jemez Volcanic Field 31
Formation of Toledo and Valles Calderas 41
Evolution of Valles Caldera 45
The Resurgent Caldera and Ash-Flow Tuff Models 53
Eruption Volumes, Eruption Impacts, and Eruption Frequency 57
The Next Valles Eruption 59
Where Does the Magma Come From and Is There More? 61
Magnetic Polarity Events 63
Geophysical Character of Valles Caldera 65
The Valles Geothermal System 69
Valles Lake History 77
Climate Change Research at Valles Caldera 81
Other Geoscience in Valles after 2000 85
Conclusions 87
Acknowledgments 89
Geologic Glossary 91
Selected Bibliography 99
Index 109
