Peter D. Rowley
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View article: The Growth and Collapse of a Volcanic Field: Detrital Zircon U/Pb Geochronology and Provenance of the Oligocene Bear Valley Formation, Southwest Utah, USA
The Growth and Collapse of a Volcanic Field: Detrital Zircon U/Pb Geochronology and Provenance of the Oligocene Bear Valley Formation, Southwest Utah, USA Open
The Bear Valley Formation (Fm.) is a distinctive eolian sandstone interbedded with thick volcanic rocks of the Marysvale volcanic field of southwest Utah, the southern part of which failed during eruptive activity along three mega-scale gr…
View article: Structural Relationships Across the Sevier Gravity Slide of Southwest Utah and Implications for Catastrophic Translation and Emplacement Processes of Long Runout Landslides
Structural Relationships Across the Sevier Gravity Slide of Southwest Utah and Implications for Catastrophic Translation and Emplacement Processes of Long Runout Landslides Open
The physical processes that facilitate long‐distance translation of large‐volume gravity slides remain poorly understood. To better understand these processes and the controls on runout distance, we conducted an outcrop and microstructural…
View article: The enigmatic Rattlesnake Knoll, Spring Valley, east-central Nevada—A geophysical perspective
The enigmatic Rattlesnake Knoll, Spring Valley, east-central Nevada—A geophysical perspective Open
First posted October 11, 2023 For additional information, contact: Geology, Minerals, Energy, & Geophysics Science CenterU.S. Geological SurveyBuilding 19, 350 N. Akron Rd.P.O. Box 158Moffett Field, CA 94035 Rattlesnake Knoll is a small, 3…
View article: Does tectonic deformation control episodic continental arc magmatism? Evidence from granitic magnetic fabrics (AMS)
Does tectonic deformation control episodic continental arc magmatism? Evidence from granitic magnetic fabrics (AMS) Open
This paper applies magnetic fabric analyses to plutons of the East Pacific continental arc. Continental arc magmatism is strongly episodic, with voluminous granitic magma addition occurring during discrete high-flux events (‘flare-ups’). T…
View article: The concept of tectonic provenance: Case study of the gigantic Markagunt gravity slide basal layer
The concept of tectonic provenance: Case study of the gigantic Markagunt gravity slide basal layer Open
Formation and evolution of the basal layer in large landslides has important implications for processes that reduce frictional resistance to sliding. In this report, we show that zircon geochronology and tectonic provenance can be used to …
View article: A site bearing on the origin of iron deposits in the Iron Springs Mining District, Iron County, Utah
A site bearing on the origin of iron deposits in the Iron Springs Mining District, Iron County, Utah Open
The discovery of the origin of iron in the Iron Springs mining district of southwestern Utah is a story of unconventional thinking based on detailed geologic mapping. This district, for many years the largest iron producer in the West, owe…
View article: Basin-range uplift and canyon cutting in 3 million years, Kingston Canyon, Piute County, southwestern Utah
Basin-range uplift and canyon cutting in 3 million years, Kingston Canyon, Piute County, southwestern Utah Open
The Sevier Plateau is a gently east-tilted, block-faulted range in the High Plateaus transition zone of southwestern Utah. Part of this range underwent basin-range deformation, including at least 6000 feet (1800 m) of uplift, in a 3-millio…
View article: An unconformity in the Pole Creek area (Sevier Plateau) west of Antimony, western Garfield County, Utah, and its bearing on the Sevier gravity slide
An unconformity in the Pole Creek area (Sevier Plateau) west of Antimony, western Garfield County, Utah, and its bearing on the Sevier gravity slide Open
Pole Canyon is cut into the western backslope of the Sevier Plateau of southwestern Utah, a gently-tilted, block-faulted range that extends north from Bryce Canyon National Park through the eastern part of the Marysvale volcanic field. The…
View article: Cedar Breaks National Monument, North View Overlook
Cedar Breaks National Monument, North View Overlook Open
Cedar Breaks National Monument straddles the western rim of the Markagunt Plateau, and, at over 10,000 feet (3050 m) in elevation, offers spectacular views westward into the adjacent Great Basin. The heart of the monument consists of a ser…
View article: 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 Open
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 run…