Episode

48: The Impossible Rock

Podcast
Bedrock: Earth's Earliest History
Published
Oct 22, 2025
Duration seconds
1871
Processing state
not_requested
Canonical source
https://bedrock.captivate.fm/episode/48-the-impossible-rock
Audio
https://episodes.captivate.fm/episode/c0b83189-1c68-4cc8-a3f2-ea3edc921808.mp3
JSON
/v1/public/podcasts/bedrock-earth-s-earliest-history-4890111/episodes/48-the-impossible-rock
Markdown
/podcast/bedrock-earth-s-earliest-history-4890111/48-the-impossible-rock.md

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Summary

What is the hardest rock to make? Today's rock is very common in Earth's ancient past, and it should be everywhere today. However, it's nearly impossible to form in nature or the laboratory. Some experiments have tried for 32 years with no success! This rock is dolomite. Today, we address The Dolomite Problem, one of geology's longest-running mysteries. Along the way, we'll meet some smelly but helpful bacteria, sort a fruit stand, and learn about the cutting edge of geology research. Extra Credit: Eat some citrus, and check your home for natural gas leaks.