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Podcast: That's Ruddy Mysterious!
Episode: S04E01 [Historical Mystery] The Great Unconformity: What caused it?
Description: An unconformity is the absence of rock history. The Great Unconformity represents anywhere from 250 million years to 1.2 billion years. What happened to make us lose all that history?Music by JuliusH "Mystery Bells - Ambient Chill Out Music" Transcript and references available at https://thatsruddymysterious.wordpress.com/2026/01/06/s04e01-historical-mystery-the-great-unconformity-what-caused-it/