More pictures of the Mississippian microbial reef in North Alabama.
Dense clotted thrombolite (dT) and loose (lT) forming framework of reef. Voids filled with coarse calcite cement (F) or micropelletal calcite cement (upper arrow). Fossils include fenestraye bryozoa (B) and microconchids (lower arrow). 2.5 millimeters in long direction.
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