Chicxulub Hydrothermal System Lasted 8 Million Years, Study Finds
New analysis of rock samples from the Chicxulub crater shows the asteroid impact's hydrothermal system lasted at least 8 million years, four times longer than previously estimated.
A new analysis of rock samples from the Chicxulub impact crater has found that the hydrothermal system generated by the asteroid strike lasted at least 8 million years, four times longer than the previous estimate of around 2 million years.
The study was led by geologist and planetary scientist Annemarie Pickersgill of the SUERC Center for Isotope Sciences at the University of Glasgow. The findings were reported by arstechnica.com.
About 66 million years ago, the Chicxulub asteroid smashed into Earth, causing tsunamis and hot debris that annihilated non-avian dinosaurs and many other species.
In 2016, researchers drilled for samples in the impact zone and studied rock types formed by the asteroid strike. The new analysis of those samples indicates the hydrothermal system persisted far longer than previously thought.
Quick answers
How long did the Chicxulub hydrothermal system last?
At least 8 million years, according to the new analysis.
Who led the study?
Geologist and planetary scientist Annemarie Pickersgill of the SUERC Center for Isotope Sciences at the University of Glasgow.
What was the previous estimate for the hydrothermal system's lifespan?
Around 2 million years.