This sample is 20 cm across from left to right. Gastropod fossils in the Reynolds Limestone member of the Mississippian Mauch Chunk Formation. Note the cavity fills: Compare the position of fine, gray sediment (original) with white sparry calcite (crystallized during diagenesis). Which way is “geopetal up” for this sample?
By: callanbentley
Image: RR/MAGIC
License:
Creative Commons Non Commercial ⧉
Uploaded: 19 Oct 2019
Last Updated: 19 Oct 2019
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