
Fine dust from pulverized rock released by the Chicxulub meteorite impact 66 million years ago played a dominant role in the cooling of the climate, the disruption of photosynthesis and the mass extinction in which most dinosaurs went extinct.
Until now, the precise circumstances of the mass extinction, such as the effect of the different types of impact material ejected from the crater on global climate were unclear. After previous research, rather than silicate dust emissions into the atmosphere, it was thought that sulfur gas and particles during the impact, and soot from forest fires after the impact, were the main causes of a kind of "nuclear winter. ...