Late Oligocene–Early Miocene Detachment Faulting in Crystalline Basement, Mecca Hills, CA, Documented With Zircon (U–Th)/He Date‐eU‐Visual Radiation Damage Patterns

Abstract

Low-temperature thermochronometry is commonly used to quantify the timing and rates of exhumation in fault systems, reconstruct deformation histories, and link fault slip to topographic growth and sedimentation (

Where did the Arizona‐Plano Go? Protracted Thinning Via Upper‐ to Lower‐Crustal Processes

“…The hypothesized timing of California‐Arizona‐Sonora MCC extension (ca. 26–21 Ma) is coeval with the timing of slip along the Orocopia Mountains Detachment Fault in southwestern California (Jacobson et al., 2007; Moser et al., 2021). The synchronous timing of rapid cooling throughout southwestern US and northern Mexico underscores the large‐scale, regional attenuation of the crust at this time (Coney, 1980; G. H. Davis & Hardy, 1981; Platt et al., 2015; Whitney et al., 2013).…”