High in the Rocky Mountains, an unusual type of rock called Tava holds the secret to Snowball Earth - a period long ago when evidence suggests the entire planet was encased in ice. #environment #Earth
theconversation.com/missing-li…
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Missing link to Snowball Earth history emerges from some unusual rocks on Colorado’s Pikes Peak
The evidence is in the unusual way Tava rocks formed there around 700 million years ago.The Conversation
