Explanation for 1:12 000 Scale Geologic Map of the South Virgin Mountains, Southeastern Nevada and Northwestern Arizona: Supplement 6 from \"The Geology of the Gold Butte Breakaway Zone and the Mechanical Evolution of Normal Fault Systems\" (Thesis)

Robert John Brady
The Gold Butte breakaway zone is the easternmost and oldest of the major Tertiary normal fault systems in the central Basin and Range province of the southwestern U.S. The normal faults of the breakaway zone crop out across the South Virgin Mountains (SVM), and define a narrow boundary zone between the Colorado Plateau and the highly extended central Basin and Range Province. Geochronologic data, including 40Ar/39Ar muscovite ages, (U-Th)/He apatite ages, and (U-Th)/Pb monazite ages,...
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