Abstract
The Shoo Fly Complex between Quartz Hill and Fall Creek Mountain contains Paleozoic folds and probable thrust faults that predate the intrusion of the Bowman Lake batholith. U-Pb analyses from six zircon fractions show that the youngest phase of the batholith is 409 ± 16 m.y. old. Previous suggestions that Paleozoic deformation in the Shoo Fly Complex is an early expression of the Late Devonian–Early Mississippian Antler orogeny are now viewed as less likely because the Antler orogeny postdated deformation of the Shoo Fly by at least 20 m.y.
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