Zircon age peaks: Production or preservation of
Additional support for the interpretation of zircon age peaks as crustal production peaks is the preservation of both peaks and valleys in detrital sediments (Parman, 2015). The prominence of the 1900 and 1100 Ma peaks and the 2300 and 1500 Ma valleys in detrital zircons from progressively younger sediments suggests that the memory of these peaks is preserved and propagated through time.