出典:Wiktionary
出典:『Wiktionary』 (2025/12/01 22:32 UTC 版)
radiolarite (countable and uncountable, plural radiolarites)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/24 06:59 UTC 版)
Radiolarite or radiolarian chert is a high silica sedimentary rock which may be considered a variety of chert. It is formed as primary deposits and contains radiolarian microfossils. Radiolarite indicates deep water deposition below the lysocline where siliceous sediments are stable and carbonates are dissolved.