THREE BUTTES

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GEOLOGY

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Eastern Butte & Middle Butte

MIDDLE BUTTE

The Western Side of the Sevier/Toroweap Fault Zone is comprised of Basaltic Volcanic Talus, the Eastern side is comprised of the sedimentary Claron Formation.

A small outcrop of the Mount Dutton Volcanic Sediment is visible next to Mafic Volcanic Sediments to the West and Clastic Talus to the East next to the Fault Zone along the Hanging Wall. 

A Volcanic Field is located further North along the Hanging Wall of the Fault Zone, it was previously unknown until the study in 2007. The volcanic vent system consists of several spatter cones and cinder cones, they were eroded so far back they went unrecognized.  

EASTERN BUTTE

The Western Side of the Sevier/Toroweap Fault Zone is comprised of Basaltic Volcanic Talus, the Eastern side is comprised of the sedimentary Claron Formation.

A small outcrop of the Mount Dutton Volcanic Sediment is visible next to Mafic Volcanic Sediments to the West and Clastic Talus to the East next to the Fault Zone along the Hanging Wall. 

A Volcanic Field is located further North along the Hanging Wall of the Fault Zone, it was previously unknown until the study in 2007. The volcanic vent system consists of several spatter cones and cinder cones, they were eroded so far back they went unrecognized.  

BIG SOUTHERN BUTTE

The Western Side of the Sevier/Toroweap Fault Zone is comprised of Basaltic Volcanic Talus, the Eastern side is comprised of the sedimentary Claron Formation.

A small outcrop of the Mount Dutton Volcanic Sediment is visible next to Mafic Volcanic Sediments to the West and Clastic Talus to the East next to the Fault Zone along the Hanging Wall. 

A Volcanic Field is located further North along the Hanging Wall of the Fault Zone, it was previously unknown until the study in 2007. The volcanic vent system consists of several spatter cones and cinder cones, they were eroded so far back they went unrecognized.  

REFEreNCES

Geology Unfolded 

Thomas H. Morris, Scott M. Ritter, Dallin P. Laycock

Page 21  (Bryce Canyon National Park)

Geology Unfolded LLC (2012)

"USGS Quaternary Fault and Fold Database"

Sevier fault (Class A) No. 2355

Last Review Date: 1999-10-01

 Black, B.D., and Hecker, S., compilers, 1999, Fault number 2355, Sevier fault, in Quaternary fault and fold database of the United States: U.S. Geological Survey website, https://earthquakes.usgs.gov/hazards/qfaults, accessed 12/04/2019 01:45 PM.

https://earthquake.usgs.gov/cfusion/qfault/show_report_AB_archive.cfm?fault_id=2355&section_id=

PALEOSEISMIC RECONNAISSANCE OF THE SEVIER FAULT, KANE AND GARFIELD COUNTIES, UTAH 

William R. Lund, Tyler R. Knudsen, and Garrett S. Vice

Paleoseismology of Utah, Volume 16

SPECIAL STUDY 122 UTAH GEOLOGICAL SURVEY

Utah Department of Natural Resources 2008

https://ugspub.nr.utah.gov/publications/special_studies/SS-122.pdf

"USGS Quaternary Fault and Fold Database"

Sevier/Toroweap fault zone, Sevier section (Class A) No. 997a

Last Review Date: 1997-04-03

 Black, B.D., and Hecker, S., compilers, 1997, Fault number 997a, Sevier/Toroweap fault zone, Sevier section, in Quaternary fault and fold database of the United States: U.S. Geological Survey website, https://earthquakes.usgs.gov/hazards/qfaults, accessed 12/04/2019 01:51 PM.

https://earthquake.usgs.gov/cfusion/qfault/show_report_AB_archive.cfm?fault_id=997&section_id=a

A Summary of Tertiary Volcanic Stratigraphy of the Southwestern High Plateaus and Acljacent Great Basin, Utah

GEOLOGICAL SURVEY BULLETIN 1405-B

PETER D. ROWLEY, JOHN J. ANDERSON, and PAULL. WILLIAMS

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1975

https://pubs.usgs.gov/bul/1405b/report.pdf