Continental extension may occur in two main different modes, narrow and wide rifting, which
mainly differ in the width of the deformed region. A third mechanism, the core complex, has …

Metamorphic core complexes are products of normal-fault displacements sufficient to
exhume rocks from below the brittle–ductile transition. These faults (detachments) may …

Large igneous provinces are exceptional intraplate igneous events throughout Earth's
history. Their significance and potential global impact are related to the total volume of …

Zirconium and Hf are nearly identical geochemically, and therefore most of the crust
maintains near-chondritic Zr/Hf ratios of~ 35–40. By contrast, many high-silica rhyolites and …

The major and trace element composition of late Cenozoic basalts (0–10 Ma) across the
Basin and Range province (B&R) preserve a clear signal of mantle melting depth variations …

Abstract Hafnium, U, Th, and REE content of zircons from the Spirit Mountain batholith in
southern Nevada correlate with calculated temperatures from the Ti-in-zircon thermometer to …

The Wasatch fault and adjacent fault zones provide an opportunity to compare present‐day
deformation rate estimates obtained from space geodesy with geologic displacement rates …

Two recent large earthquakes in the Mojave Desert, California—the magnitude 7.3 1992
Landers and magnitude 7.1 1999 Hector Mine earthquakes—have each been followed by …

Herein we present oxygen isotope records from Cretaceous to Recent terrestrial sediments
in the western North American Cordillera. The purpose of this analysis is to use oxygen …

▪ Abstract Cenozoic extension in the western United States presents a complex interrelation
of extension, volcanism, and plate boundary tectonics that defeats simple notions of “active” …