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Searching for the Ordovician-Silurian boundary in Iowa, Midwest, United Stated


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I'm wondering if anyone has any knowledge of what I should look for when determining the obvious signs of the O-S boundary. If there is a general strata or formation I should keep my eyes open for when looking for it? I keep seeing a reddish boundary when I search for it online. However, I can't find any pictures from anywhere within 1000 miles of where I am, so am a bit skeptical. Any help would be great! A  clear picture would be better! This image is from Manitoba, Canada. It's description is a bit vague.


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Moved to Question and Answers.


(Help and Suggestions is for Forum/website related questions. ) ;)


Have you read through this article?  LINK


Another potentially helpful PDF. LINK


   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

"In every walk with nature one receives far more than he seeks."

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