Skeletal - Halimeda, Molluscs & Corals (B/21/Ple/Eni)
![](Images/_Gallery_Micro/Photos_Related/b-021-2-5x-01.jpg) 2.5x
|
![](Images/_Gallery_Micro/Photos_Related/b-021-5x-01.jpg) 5x
|
![](Images/_Gallery_Micro/Photos_Related/b-021-Xf-5x-01.jpg) 5x wave plate
|
![](Images/_Gallery_Micro/Photos_Related/b-021-5x-02.jpg) 5x
|
![](Images/_Gallery_Micro/Photos_Related/b-021-Xf-5x-02.jpg) 5x wave plate
|
![](Images/_Gallery_Micro/Photos_Related/b-021-Xf-10x-02.jpg) 10x wave plate
|
Outstanding feature |
Very porous rock undergoing early marine cementation |
Folk Classification |
Halimeda biosparite |
Dunham Classification |
Halimeda packstone |
Common Grains |
Halimeda, mollusks & foraminifera |
Sorting |
Good |
Rounding |
Well rounded |
Micritization & envelopes |
Thin envelopes on some grains |
Cement & diagenetic fabric |
Circumgranular aragonite cements |
Porosity |
40% intergranular |
Depositional Setting |
High energy portion of atoll reef |
Diagenetic history |
Marine cementation |
Sample collected from 80ft in the XGK-7-3-80 well Eniwetok, Marshall Islands. Halimeda flakes that have undergone marine cementation on the margins of the atoll.
Thursday, November 11, 2021