Neogene Deformation between Central Utah and the Mojave Desert
Neogene Deformation between Central Utah and the Mojave Desert

Author: R. Ernest Anderson

Publisher: Geological Society of America

Published: 2013-10-24

Total Pages: 104

ISBN-13: 0813724996

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"This book is a must-read for researchers interested in extensional tectonics in general and the Neogene tectonics of the Basin and Range in particular, because it challenges, on the basis of more than 50 years of field studies, the existing paradigm of province-wide uniformly large extension and replaces it with a model integrating extension with extension-normal shortening-both as primary strains. The first chapter takes the reader on two journeys southwestward from central Utah through the Lake Mead area: the first to emphasize the lack of uniformly distributed or integrated extension and the second to highlight left-lateral shear at 13 localities along the east margin of the Basin and Range that is kinematically compatible with right-lateral shear along the west margin. The compatibility provides a basis for understanding the extreme Neogene tectonics of the Lake Mead area. The second chapter summarizes multifaceted field evidence from the well-studied eastern Lake Mead area as a focused example of the need for a complete revision of the extensional paradigm." -- Publisher's description.

The Gigantic Markagunt and Sevier Gravity Slides Resulting from ­ Mid-Cenozoic Catastrophic Mega-Scale Failure of the Marysvale Volcanic Field, Utah, USA
The Gigantic Markagunt and Sevier Gravity Slides Resulting from ­ Mid-Cenozoic Catastrophic Mega-Scale Failure of the Marysvale Volcanic Field, Utah, USA

Author: Robert F. Biek

Publisher: Geological Society of America

Published: 2019-12-31

Total Pages: 132

ISBN-13: 0813700566

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"The Markagunt and Sevier gravity slides are gigantic landslides that resulted from gravitationally induced catastrophic 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"--

Transform Plate Boundaries and Fracture Zones
Transform Plate Boundaries and Fracture Zones

Author: Joao C. Duarte

Publisher: Elsevier

Published: 2018-09-25

Total Pages: 480

ISBN-13: 0128122463

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Transform Plate Boundaries and Fracture Zones bridges the gap between the classic plate tectonic theory and new emerging ideas, offering an assessment of the state-of-the-art, pending questions, and future directions in the study of transform plate boundaries and fracture zones. The book includes a number of case studies and reviews on both oceanic and continental tectonic settings. Transform Plate Boundaries and Fracture Zones is a timely reference for a variety of researchers, including geophysicists, seismologists, structural geologists and tectonicists, as well as specialists in exploration geophysics and natural hazards. This book can also be used as an up-to-date reference at universities in both undergraduate and postgraduate levels. - Reviews ideas and concepts about transform plate boundaries and fracture zones - Includes a variety of case studies on both oceanic and continental settings - Addresses innovative and provocative ideas about the activity of fracture zones and transform faults and their impacts to the human society

Paleomagnetic Rotations and Continental Deformation
Paleomagnetic Rotations and Continental Deformation

Author: Catherine Kissel

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 516

ISBN-13: 9400908695

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One of the most interesting results obtained in the last two decades in the study of crustal deformation has been the recognition that large regions of continental crust undergo rotations about vertical axis during deformation. Proof of such rotations has come through the paleomagnetic studies, which reveal rotations when paleomagnetic declinations within the deforming region arc compared with those found in coeval rocks in the stable regions outside the deforming zone. Such rotations were first described in Oregon then in the North American Cordilleras and in Southern California and were a surprise to everyone. Even in California which, as a result of oil exploration, was among the best geologically explored regions in the world, no one could claim to have predicted that these rotations would be found. Rotations have subsequently been found in other areas of recent continental tectonic activity, notably in the Basin and Range province, New Zealand, the Andes, Greece and Western Turkey, so that they appear as an important feature of continental deformation.