gorgon Posted September 20, 2018 Share Posted September 20, 2018 This is interesting. Haven't seen one like this before. Any ideas? Grand Traverse, East Bay shoreline. The coin is a US quarter. Link to post Share on other sites
ynot Posted September 20, 2018 Share Posted September 20, 2018 Oolitic jasper. (aka poppy jasper) 1 Link to post Share on other sites
abyssunder Posted September 20, 2018 Share Posted September 20, 2018 Maybe those are pisoids. Pisolite 1 Link to post Share on other sites
Ludwigia Posted September 21, 2018 Share Posted September 21, 2018 Could also be a sedimentary conglomerate made up of water-worn pebbles and sandy clay. Link to post Share on other sites
abyssunder Posted September 21, 2018 Share Posted September 21, 2018 17 hours ago, Ludwigia said: Could also be a sedimentary conglomerate made up of water-worn pebbles and sandy clay. It crossed my mind, Roger, but the concentric layers of the constituent elements might rule out "puddingstone", I think. 2 Link to post Share on other sites
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