Is the Mystery of Earth's 1.2 Billion Missing Years Solved? | SciShow News

The video explores the Great Unconformity, a geological mystery where over a billion years of Earth's history is missing. Researchers propose that massive glaciers during the Snowball Earth period eroded the Earth's surface, removing significant geological records. By studying zircon crystals, they suggest that this material was subducted into the Earth's mantle. The findings also hint at a connection between this erosion and the Cambrian explosion of life. However, questions remain about the timing and processes involved, requiring further research.

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