Trans-Hudson-Orogene in the north and north-east of our study area and other reworked Archean crust within Utah and Nevada give upper Orosirian ages (1.9 - 1.8 Ga), too. The Yavapai terranes dominate the south-east with ages between 1.76 - 1.72 Ga (Statherian), which is the same period as the Mazatzal terranes (1.69 - 1.65 Ga), outside our narrower study area. As well outside, only slightly touching it, is the Granite Rhyolite Province with ages from...