Carbonate sand, Plage de St. Jean, St. Barthelmy, Caribbean
|
| |
| |
Plage de St. Jean, St. Barthelmy | Fragments of red algae |
Location |
...
Beach, Plage de St.Jean, St. Barthelmy, Caribbean |
...
Provenance:
...
Depositional facies | replace this with text about the dep facies |
Provenance | Diverse and typical mixture of carbonate fragments of marine provenance and some quite particular VRFs and MRFs of landward andesitic provenance |
Composition |
...
Dominant white carbonate sand (CaCO3, calcite and aragonite); few fractions of quartz, chlorite?, hornblende, fine grained and dark mafic rock fragments (Lv), intermediary plutonic fragments, black obsidian | |
Texture | Medium sand (ca. 350 µ), moderately sorted, subangular |
...
Petrographic thin section:
...
Description | Characteristic "finger print" red algae, tubular serpulids, few benthic foraminifera, radial coralline sceletal fragments, angular echinoid plate |
| Characteristic "finger print" red algae, | |
Bright field |
| Dark field |
...
Texture:
...
Medium sand (ca. 350 µ), moderately sorted, subangular
|
| |
Bright field | Dark field |
Sample number | heubeck0077 | |
Collector | ||
Sample number | Collector | Date of sampling |
|---|---|---|
heubeck0077 | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin | |
Date of sampling | 2004 |
...
Comments:
...
Dominated by white, fine cristalline, porous coralline sceletal fragments (>90%), accessory transparent opaline sponge spiculae, fragments of bryozoa, few hyaline brown mollusca, large ovoid benthic foraminifera, angular echinoderm plates, rarely ostracoda, possibly plates from calcareous algae
