formuchdeliberationScientists have uncovered an unexpected witness to Earth’s distant past: tiny iron oxide stones called ooids. These mineral snowballs lock away traces of ancient #carbon revealing that #oceans between 1,000 and 541 million years ago held far less #organiccarbon than previously thought... #earth #minerals #EarthScience #ooids #science
https://www.sciencedaily.com/releases/2025/09/250926035026.htm
Tiny stones rewrite Earth’s evolution story
Scientists have uncovered an unexpected witness to Earth’s distant past: tiny iron oxide stones called ooids. These mineral snowballs lock away traces of ancient carbon, revealing that oceans between 1,000 and 541 million years ago held far less organic carbon than previously thought. This discovery challenges long-standing theories linking carbon levels, oxygen surges, and the emergence of complex life.
Dr. Brad Rosenheim has moved!