Jurassic radiolarian chert, OregonApril 19, 2022/in /by Marli Miller silica, deep sea sedimentary rock, bedding, strata, closeup, close-up https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png Marli Miller2022-04-19 05:16:432022-04-19 05:20:48Jurassic radiolarian chert, Oregon
