Skeletal - Calcareous Algae - Rhodophytae (Al/14/Ple/Ber)
| Outstanding feature |
Abundant calcareous red algae |
| Folk Classification |
Red calcareous bound-stone algal micrite |
| Dunham Classification |
Algal wackestone & boundstone |
| Common Grains |
Micrite and algal laminations |
| Sorting |
Poor |
| Rounding |
Poor |
| Micritization & envelopes |
Micrite cements portions of this rock |
| Cement & diagenetic fabric |
Micrite cements & leached aragonite grains |
| Porosity |
Intra and inter-particle |
| Depositional Setting |
Reef bommie from margin of Bermuda |
| Diagenetic history |
Grains cemented by micrite & then aragonite leached by fresh water |
Sample is from a cored well in Bermuda which penetrates algal reefs that have been cemented and undergone digenesis. Sample includes rhodophytae grains, micrite & gastropod fragments cemented by micrite while aragonite materials are leached by fresh water
Thursday, November 11, 2021