Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California

The Volcanic Tableland, a plateau at the northern end of Owens Valley, CA, is capped by the rhyolitic Bishop Tuff. It hosts many tectonic and volcanic landforms, including hundreds of fault scarps, large joint sets, and inactive fumarolic mounds and ridges. The 1986 Chalfant Valley earthquake sequen...

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Autores principales:	William T. Jenkins, Christian Klimczak, Patrick M. Trent, Douglas E. Crowe
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Bishop Tuff faulting joints mineralization strike-slip tectonics Mineralogy QE351-399.2
Acceso en línea:	https://doaj.org/article/2893a5d9de994da7a7097852861a5780
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spelling	oai:doaj.org-article:2893a5d9de994da7a7097852861a57802021-11-25T18:25:55ZFumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California10.3390/min111111672075-163Xhttps://doaj.org/article/2893a5d9de994da7a7097852861a57802021-10-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1167https://doaj.org/toc/2075-163XThe Volcanic Tableland, a plateau at the northern end of Owens Valley, CA, is capped by the rhyolitic Bishop Tuff. It hosts many tectonic and volcanic landforms, including hundreds of fault scarps, large joint sets, and inactive fumarolic mounds and ridges. The 1986 Chalfant Valley earthquake sequence shed light on a blind strike-slip fault system beneath the Bishop Tuff. The spatial relationships of the volcanic and tectonic structures have previously been well documented, however, the mechanisms of formation of structures and their enhancement as fumarolic pathways remain largely unexplored. We collected fault kinematic indicators, joint orientations, and documented fumarolic alterations of microcrystalline quartz in the Bishop Tuff and combined those field observations with fault response modeling to assess whether strike-slip activity played a key role in the development of fumarolic pathways. We found field evidence of dip-slip and strike-slip faulting that are consistent with the overall transtensional regional tectonics. Our modeling indicates that a blind strike-slip fault system would dilate joints in the overlying Bishop Tuff with preferred orientations that match observed orientations of joints along which fumarolic activity occurred. Our results imply that the localization of fumaroles was tectonically controlled and that fault activity in the valley floor likely initiated prior to tuff emplacement.William T. JenkinsChristian KlimczakPatrick M. TrentDouglas E. CroweMDPI AGarticleBishop Tufffaultingjointsmineralizationstrike-slip tectonicsMineralogyQE351-399.2ENMinerals, Vol 11, Iss 1167, p 1167 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bishop Tuff faulting joints mineralization strike-slip tectonics Mineralogy QE351-399.2
spellingShingle	Bishop Tuff faulting joints mineralization strike-slip tectonics Mineralogy QE351-399.2 William T. Jenkins Christian Klimczak Patrick M. Trent Douglas E. Crowe Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California
description	The Volcanic Tableland, a plateau at the northern end of Owens Valley, CA, is capped by the rhyolitic Bishop Tuff. It hosts many tectonic and volcanic landforms, including hundreds of fault scarps, large joint sets, and inactive fumarolic mounds and ridges. The 1986 Chalfant Valley earthquake sequence shed light on a blind strike-slip fault system beneath the Bishop Tuff. The spatial relationships of the volcanic and tectonic structures have previously been well documented, however, the mechanisms of formation of structures and their enhancement as fumarolic pathways remain largely unexplored. We collected fault kinematic indicators, joint orientations, and documented fumarolic alterations of microcrystalline quartz in the Bishop Tuff and combined those field observations with fault response modeling to assess whether strike-slip activity played a key role in the development of fumarolic pathways. We found field evidence of dip-slip and strike-slip faulting that are consistent with the overall transtensional regional tectonics. Our modeling indicates that a blind strike-slip fault system would dilate joints in the overlying Bishop Tuff with preferred orientations that match observed orientations of joints along which fumarolic activity occurred. Our results imply that the localization of fumaroles was tectonically controlled and that fault activity in the valley floor likely initiated prior to tuff emplacement.
format	article
author	William T. Jenkins Christian Klimczak Patrick M. Trent Douglas E. Crowe
author_facet	William T. Jenkins Christian Klimczak Patrick M. Trent Douglas E. Crowe
author_sort	William T. Jenkins
title	Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California
title_short	Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California
title_full	Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California
title_fullStr	Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California
title_full_unstemmed	Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California
title_sort	fumarolic pathways were structurally controlled by a strike-slip fault system beneath the bishop tuff, bishop, california
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2893a5d9de994da7a7097852861a5780
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Fumarolic Pathways Were Structurally Controlled by a Strike-Slip Fault System Beneath the Bishop Tuff, Bishop, California

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