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Hornstone |
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hornstone [′hȯrn‚stōn]
(petrology) Hornstone (hornstein), siliceous rocks (flints, jaspers, menilites) with admixtures of clay material and iron hydroxides; they form concretions and intercalations in carbonate and clay beds. Hornstones often contain carbonates and organic remnants, such as sponges and radiolarians. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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