Plax Posted December 14, 2016 Share Posted December 14, 2016 Here are a few of the dolomitic pseudomorphs I mentioned in an earlier post. They form at the contact between the Rocky Point and Island Creek Members of the Peedee Formation. Dolomite apparently migrates from the Island Creek member to fill voids in the top of the Rocky Point member. Before its formal description the Island Creek Member was called the dolosilt. Drag line operators at local (Castle Hayne) quarries call it gumbo clay. The Island Creek is a nuisance because it lies between two usable (fit for the crushing mill) rock units. As nearly the oldest unusable unit exposed in the quarry it is often on the top of the spoil heaps. The Rocky Point Member is product rock so it isn't always easy to find a frag from the contact with these pseudomorphs. 3 Link to comment Share on other sites More sharing options...
masonboro37 Posted December 14, 2016 Share Posted December 14, 2016 Thanks for the informative post! Libby Process of identification "mistakes create wisdom". Link to comment Share on other sites More sharing options...
Plax Posted December 14, 2016 Author Share Posted December 14, 2016 forgot to mention that the scale is centimeters. thanks Libby Link to comment Share on other sites More sharing options...
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