KnowraK–Pg boundaryLinked fromLinked fromThe 15 pages that link to K–Pg boundary, each with the reason it gives.All 15Broader topic 3Related 11Narrower topic 1Cretaceous–Paleogene extinction eventBroader topic: The boundary layer records the abrupt global transition associated with the extinction.Impact winterBroader topic: Its globally distributed deposits record the event associated with impact-induced atmospheric darkness.Walter AlvarezBroader topic: Alvarez and colleagues measured iridium in clay from this worldwide boundary layer.