Scientists have discovered levels of iridium 30 times greater than average in the Cretaceous/Tertiary (KT) boundary, the layer of sedimentary ... now you don't" end to the dinosaurs implies ...

Termed the Cretaceous-Paleogene (also called the K-T and K-P) boundary, the post-impact Earth ... 66 million years later, formed a layer of sediment worldwide. The researchers from the University ...

Previous studies have posited that the mass extinction that wiped the dinosaurs off the face of the Earth was caused by the release of large volumes of sulfur from rocks within the Chicxulub impact ...

formerly the Cretaceous-Tertiary (K-T) boundary. This geological signature consists of a thin layer of sediment found across the planet in both marine and terrestrial rocks; it is often identified ...

This impact triggered a chain reaction of destructive events including a rapid climate change that eventually led to the extinction of the non-avian dinosaurs ... the K-Pg boundary layer in ...