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last mo.

Stromatolites Found Buried Under South Korea Impact Crater

Geochemical signs point to a post-impact hydrothermal lake that may have hosted microbial communities for thousands of years.

Evidence of ancient life has just been found buried inside an asteroid crater — and the discovery suggests the warm lakes created by major impacts may have been some of the original cradles of life on Earth
Ancient asteroid crater in South Korea may preserve evidence of life after impact
Evidence of Ancient Life Found Buried Under an Asteroid Crater

Overview

  • A Korea Institute of Geoscience and Mineral Resources team led by Jaesoo Lim published the peer-reviewed study in late May 2026 reporting stromatolites beneath the Hapcheon (Jeokjung–Chogye) crater.
  • The researchers found multiple layered structures about 10 to 20 centimeters across buried in the northwestern part of the crater that match stromatolite morphology.
  • Chemical analyses showed europium enrichment and elevated calcium, calcite, and sulfur, a suite of signals commonly linked to hot, mineral-rich hydrothermal fluids.
  • Radiocarbon dates on stromatolite material fall roughly between 23,400 and 14,600 years ago, which suggests the post-impact hydrothermal lake lasted for tens of millennia but the team notes age reversals and possible older-carbon contamination that make exact timing uncertain.
  • The authors propose impact-created crater lakes could have served as temporary microbial refuges and localized oxygen-producing zones on early Earth and that similar buried signals make crater-hydrothermal sites promising targets in the search for past life on Mars, but they call for more fieldwork and tighter dating to test those ideas.