Figure 2.
Non-normalized kernel density estimates with 10-m.y. bandwidth comparing U-Pb zircon ages from Colorado Plateau transition zone (CPTZ; Chino Valley and Camp Creek localities) xenoliths with pluton ages from the Mojave Desert (Barth et al., 2008; Wells and Hoisch, 2008; Needy et al., 2009; Chapman et al., 2018) and the CPTZ (Vikre et al., 2014; Tosdal and Wooden, 2015; Chapman et al., 2018). N—number of analyzed samples; n—number of analyzed grains.