Carbonate sand, Plage de St. Jean, St. Barthelmy, Caribbean
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Plage de St. Jean, St. Barthelmy |
Location:
Beach, Plage de St.Jean, St. Barthelmy, Caribbean
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
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Fragments of red algae |
Petrographic thin section:
Characteristic "finger print" red algae, tubular serpulids, few benthic foraminifera, radial coralline sceletal fragments, angular echinoid plate
Texture:
Medium sand (ca. 350 µ), moderately sorted, subangular
Sample Number:
number of the sample
Collector:
Collector of the sand, Institution
Date:
Date of sampling
Comments:
Further comments on the sand, depositional history, ecc.