Fig. 5: Zircon and rutile U–Pb age patterns.
From: Changes in orogenic style and surface environment recorded in Paleoproterozoic foreland successions

Kernel density estimates of detrital zircon and detrital/metamorphic rutile U–Pb ages from samples of the Dengfeng Complex (a), Songshan (b, e) and Wufoshan (f, g) groups. Note the different age patterns between rutile (e) and zircon (b–d) from the Songshan Group. Fm Formation, Gr Group.