Grapestone & Peloids (int/18/Miss/Ind)
 10x
|
 10x
|
 2.5x
|
 5x
|
 10x wave plate
|
 10x wave plate
|
 5x cross nicol
|
| Outstanding feature |
Intraclasts, foraminifera & crinoids with calcite spar overgrowths |
| Folk Classification |
Poorly washed skeletal intrasparite |
| Dunham Classification |
Skeletal intraclastic packstone |
| Common Grains |
Intraclasts, foraminifera & crinoids |
| Sorting |
Poor |
| Rounding |
Poor |
| Micritization & envelopes |
Local micrite cement and micritized bioclasts |
| Cement & diagenetic fabric |
Mixed early micritic cement and later equant calcite spar and overgrowths |
| Porosity |
None |
| Depositional Setting |
Moderate energy open marine shelf |
| Diagenetic history |
Early micritic cement and later equant calcite spar and overgrowths |
Intraclasts, foraminifera & crinoids collect on moderate energy open marine shelf where early micritic cement and later equant calcite spar develops along with overgrowths on crinoid plates and ossicles.
Thursday, November 11, 2021