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Chicxulub Impact Crater Hosted Hydrothermal System for 8 Million Years
Key points
- Chicxulub impact created a hydrothermal system.
- System lasted 8 million years, not 2 million.
- Hot water and porous rock supported potential life.
- Research based on rock samples from 2016 drilling.
Chicxulub Impact's Aftermath
The Chicxulub asteroid impact 66 million years ago caused widespread destruction, including tsunamis and debris that led to the extinction of non-avian dinosaurs. The impact site, located in the Yucatan Peninsula, also generated significant subterranean effects.
Formation of a Hydrothermal System
The collision deformed rock up to 35 km deep, melting a large volume of rock. Seawater exposure made this rock porous, allowing hot water to seep in and create a hydrothermal system. This system could have provided a habitat for microorganisms and other life forms in the deep ocean.
Underestimated Longevity
Initial estimates suggested the hydrothermal system lasted for 2 million years. However, a new study led by geologist Annemarie Pickersgill of the University of Glasgow analyzed rock samples from a 2016 drilling expedition. This analysis revealed the system persisted for at least 8 million years, four times longer than previously thought.
Implications for Life
The extended duration and scale of this hydrothermal system suggest a prolonged period during which life could have thrived in the impact zone. The hot water in an otherwise cold environment would have attracted and sustained microbial communities, potentially serving as a refuge after the global cataclysm.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
New research indicates the Chicxulub asteroid impact created a hydrothermal system that persisted for 8 million years, four times longer than previously estimated. This system, formed by seawater interacting with hot, porous rock, may have supported microbial life after the extinction event.