Iridium Anomaly at the K-Pg Boundary

(This is a continuation of the discussion introducing a theory developed by Dr. Wright.)

Iridium Anomaly at the K-Pg Boundary and the Fountains of the Great Deep in the Rahab Theory

Within the Rahab model, the well-known iridium-rich layer at the Cretaceous-Paleogene (K-Pg) boundary, often linked in secular models to the Chicxulub crater and the supposed extinction of the dinosaurs, receives a far more coherent explanation through the events of Noah’s Flood. Secular scientists interpret the global iridium anomaly as evidence of a single large asteroid (or comet) impact roughly 66 million years ago. However, the total quantity of iridium deposited worldwide at this boundary is far too great to be accounted for by one Chicxulub-sized impactor alone. Estimates of the global iridium fluence (around 55 ng/cm² on average across studied sites) imply an amount that exceeds what a single 10–15 km asteroid could reasonably supply, even when allowing for complete vaporization and atmospheric dispersal. Moreover, the Chicxulub site itself shows surprisingly little iridium in its impact melt rocks and ejecta, which weakens the idea that it was the primary source.

In the biblical Rahab framework, this iridium layer was deposited during the global Flood (Genesis 6–9), most likely in the early to middle stages as the catastrophic geological processes unfolded. When “the fountains of the great deep” broke open (Genesis 7:11), massive tectonic rifting, mantle upwelling, and intense volcanic activity brought enormous volumes of material from deep within the Earth to the surface. Iridium is a highly siderophile (iron-loving) element that is extremely rare in Earth’s crust but far more abundant in the mantle and especially the core. The violent fracturing of the crust and rapid mantle degassing during the Flood would have mobilized significant quantities of iridium-rich material, dispersing it globally through volcanic plumes, hydrothermal vents, ocean currents, and atmospheric circulation.

This deep-Earth source was supplemented by iridium delivered directly from the Rahab asteroid debris swarm that bombarded Earth during the same Flood year. The combination of terrestrial iridium extruded from the mantle via the fountains of the great deep and extraterrestrial iridium from Rahab fragments easily accounts for both the observed global abundance and the distribution pattern—far better than a single impact event.

Terrestrial Iridium (with platinum, palladium, gold, and rhodium), Turramurra, NSW (This sample in The Flood Museum Collection)

Regarding associated isotope signatures (such as osmium, chromium, and other platinum-group elements), the same principles outlined earlier in the Rahab theory apply. The meteoritic component reflects both the initial created isotopic diversity on Day 4 and the rapid fractionation that occurred during Rahab’s catastrophic breakup and the high-energy impacts and mixing during the Flood. The deep-Earth iridium mobilized by the fountains of the great deep would carry mantle-like isotopic ratios, but the intense Flood conditions caused rapid chemical exchange and fractionation, producing the mixed signatures observed today. This unified catastrophic process explains the data without requiring millions of years of slow accumulation or a separate deep-time extinction event.

Thus, rather than marking a singular asteroid impact that ended the age of dinosaurs, the K-Pg iridium layer stands as powerful evidence of the global Flood judgment. God used both the cosmic bombardment from Rahab’s remnants and the violent opening of the fountains of the great deep to reshape the Earth, while the dinosaurs and other creatures perished as part of that same cataclysmic event. This interpretation remains fully consistent with the rest of the Rahab model, including the post-Flood stabilization of the asteroid belt and the occasional modern meteorite falls that continue to remind us of the original created and catastrophically processed material.