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Meteorite which wiped out the dinosaurs also created record-breaking hydrothermal system: Study
Researchers said the crater’s heated underground waters may have supported microbes for 8 million years and could guide the search for life beyond Earth.
A new study published in Nature Communications reveals the Chicxulub impact crater in Mexico hosted a hydrothermal system for eight million years, a life-supporting environment lasting far longer than previous models estimated.
About 66 million years ago, a 10km-wide asteroid struck Earth, wiping out about 70% of marine species and all non-avian dinosaurs, leaving a crater stretching nearly 200km across.
Dr. Annemarie Pickersgill of the Scottish Universities Environmental Research Centre used argon-argon dating to analyze samples from 2,316 to 2,480 feet below the seafloor, confirming the long span of hydrothermal activity.
Continuous hydrothermal activity created a "unique marine environment" that supported rapid ecosystem recovery, according to lead author Honami Sato of Kyushu University, enriching the overlying ocean with nutrients.
Researchers suggest these findings help identify impact craters on other planets like Mars that could sustain life, positioning impact-generated hydrothermal systems as critical for understanding extraterrestrial habitability.