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Late Miocene to Pliocene vertical-axis rotation attending development of the Silver Peak-Lone Mountain displacement transfer zone, west-central Nevada

Michael S. Petronis, John W. Geissman, John S. Oldow and William C. McIntosh
Late Miocene to Pliocene vertical-axis rotation attending development of the Silver Peak-Lone Mountain displacement transfer zone, west-central Nevada (in Late Cenozoic structure and evolution of the Great Basin-Sierra Nevada transition, John S. Oldow (editor) and Patricia H. Cashman (editor))
Special Paper - Geological Society of America (2009) 447: 215-253

Abstract

Paleomagnetic data from three regionally extensive Oligocene ignimbrite sheets, two sequences of Miocene andesite flows, and ten sequences of Upper Miocene to Pliocene basaltic andesite flows in the Candelaria Hills and adjacent areas, west-central Nevada, provide further evidence that, since the late Miocene, and possibly between latest Miocene and earliest Pliocene time, the broad region that initially facilitated Neogene displacement transfer between the Furnace Creek and central Walker Lane fault systems experienced some 20 degrees to 30 degrees of clockwise vertical-axis rotation. The observed sense and magnitude of rotation are similar to those previously inferred from paleomagnetic data from different parts of the Silver Peak Range to the south. We propose that clockwise rotation within the transfer zone formed in response to horizontal components of simple and pure shear distributed between early-formed, northwest-striking right-lateral structures that initiated in mid- to late Miocene time. Notably, the spatial distribution of the early-formed transfer zone is larger and centered south of the presently active stepover, which initiated in the late Pliocene and is characterized by a transtensional deformation field and slip on east-northeast-oriented left-oblique structures that define the Mina deflection. The sense and magnitude of rotation during this phase of deformation, which we infer to be of pre-latest Pliocene age, are inconsistent with the geodetically determined regional velocity field and seismologically determined strain field for this area. As a consequence, the longer-term kinematic evolution of the stepover system, and the adjoining parts of the Furnace Creek and Walker Lane fault systems, cannot be considered as a steady-state process through the Neogene.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 447
Title: Late Miocene to Pliocene vertical-axis rotation attending development of the Silver Peak-Lone Mountain displacement transfer zone, west-central Nevada
Title: Late Cenozoic structure and evolution of the Great Basin-Sierra Nevada transition
Author(s): Petronis, Michael S.Geissman, John W.Oldow, John S.McIntosh, William C.
Author(s): Oldow, John S.editor
Author(s): Cashman, Patricia H.editor
Affiliation: New Mexico Highlands University, Natural Resource Management Department, Las Vegas, NM, United States
Affiliation: University of Texas at Dallas, Department of Geosciences, Richardson, TX, United States
Pages: 215-253
Published: 2009
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 197
Accession Number: 2009-079384
Categories: Structural geologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. 4 tables, geol. sketch map
N38°00'00" - N38°30'00", W118°40'00" - W118°00'00"
Secondary Affiliation: University of Nevada, USA, United StatesUniversity of New Mexico, USA, United StatesUniversity of Texas at Dallas, USA, United StatesNew Mexico Institute of Mining and Technology, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200942
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