Graded bed, sandstone and shale sedimentary, hand sample, specimen https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png Marli Miller2017-04-30 20:06:242017-09-25 21:06:10Graded bed, sandstone and shale
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