Full title: The Gigantic Markagunt and Sevier Gravity Slides Resulting from Mid-Cenozoic Catastrophic Mega-Scale Failure of the Marysvale Volcanic Field, Utah, USA
Authors: Robert F. Biek, Peter D. Rowley, and David B. Hacker
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A Thompson Field Forum Volume
The Markagunt and Sevier gravity slides are gigantic landslides that resulted from gravitationally induced cata-strophic failure of the southern flank of the Oligocene to Miocene Marysvale volcanic field. Each is nearly 100 km long with runouts over the former land surface >35 km; together they span 7000 km2 and rank among Earth's largest terrestrial landslides. Basal cataclastic layers, injectites, pseudotachylyte, deformed clasts, and a variety of kinematic indicators demonstrate catastrophic emplacement, which was preceded by slow gravitational spreading of the volcanic field. This volume offers a history of their discovery, our current understanding of the gravity slides, and a guide to particularly instructive exposures for which the authors document their conclusions about the size, age, and significant structural features of these newly discovered features.Published: 12/04/2019
ISBN Number: 978-0-8137-0056-4
Pages: 121
Product Category: Field Guides