Michael Braunagel
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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: Claron basin provenance shift from Sevier-Laramide compression to Basin and Range extension
Claron basin provenance shift from Sevier-Laramide compression to Basin and Range extension Open
The Eocene-Oligocene Brian Head Formation is the basal volcanic unit throughout much of the southern Marysvale volcanic field but rests atop Sevier-Laramide synorogenic strata of the Claron foreland basin in southern Utah. The Brian Head F…
View article: Zircon geochronology records frictional weakening and restrengthening during emplacement of the Sevier gravity slide, southwest Utah (USA)
Zircon geochronology records frictional weakening and restrengthening during emplacement of the Sevier gravity slide, southwest Utah (USA) Open
The exceptional transport distance of long-runout landslides requires a mechanism for reduced frictional resistance to sliding. Here, we use zircons in the frictional wear products generated during emplacement of the Sevier gravity slide (…