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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
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Bright field |
| Dark field |
Texture:
Medium sand (ca. 350 µ), moderately sorted, subangular
Sample |
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number | Collector |
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Date of sampling | |
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heubeck0077 | Christoph Heubeck, Institut für Geologische Wissenschaften, |
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FU Berlin |
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Date:
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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
