Ribbon chert and interbedded shaleApril 30, 2017/in /by Marli Miller sedimentary, siliciclastic, green shale, radiolarian, ribbon chert 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 Miller2017-04-30 20:25:402017-09-03 21:21:26Ribbon chert and interbedded shale