Microscopic

Peloids as Ghosts & Sponge Spicules (Mic/1)

5x
10x
2.5x
Outstanding feature Micrite faint ghosts of pelloids, bioclast fragments & sponge spicules
Folk Classification Sparse spicular and pelloid micrite
Dunham Classification Pelloid wackestone
Common Grains Pelloids and sponge spicules
Sorting  
Rounding  
Micritization & envelopes  None to be seen. Probably obscured by micrite
Cement & diagenetic fabric Micrite
Porosity  
Depositional Setting Low energy restricted quiet water
Diagenetic history Pellets compacted under their own weight and cemented during burial

This is a typical micrite with sponge spicules, angular fragments of bioclatice material and ghosts of pellets that accumulated in a very low energy probably restricted setting.


Tuesday, April 28, 2020
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