Full Title: Miocene Tectonics of the Lake Mead Region, Central Basin and Range
Editors: Paul J. Umhoefer, L. Sue Beard, and Melissa A. Lamb
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The Lake Mead region is in the eastern part of the Central Basin and Range, a classic extensional belt. Many seminal papers have been published based on research around Lake Mead: low-angle normal faulting was first recognized here, large-scale extension was demonstrated and quantified, and the rolling hinge hypothesis was first proposed. Ongoing research seeks to address the interplay of extensional and strike-slip faults and shortening features and to understand the driving forces behind deformation in this area. This volume’s 19 chapters provide insights that are not only relevant to this area but to extensional processes in general. This Special Paper provides a historical overview of research of the region, a 1:250,000 regional geologic map centered on Lake Mead, and a geophysical analysis of the region’s basins and faults. The remaining chapters focus on Miocene basins and structure, new tectonic models, and a new and controversial model of large-volume dissolution accompanying extension in the Mormon Mountains. This volume is dedicated to R. Ernie Anderson, whose contributions span more than fifty years of research.