Microscopic

Cemented Grapestone - Some Botryoidal Grains & Ooids (Int/1/Hol/Bah)

10x
2.5x
2.5x
5x
5x
5x
5x
5x
Outstanding feature Grapestones, pelloids, and micritized ooids
Folk Classification Intramicrite
Dunham Classification Grapestone Packstone
Common Grains Grapestones, pelloids, and micritized ooids
Sorting poorly sorted
Rounding Rounded
Micritization & envelopes Mcritization of grapestones, ooids and pelloids
Cement & diagenetic fabric Micrite cementing and replacing grains
Porosity 30% Interpartical
Depositional Setting Moderate energy shoal
Diagenetic history Marine cementation of sea floor to form hardgrounds.

Striking marine cementation and replacement of grains by micrite. Empty pore spaces between grains are now filled by blue stained epoxy. 


Thursday, August 15, 2019
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