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h5. Beach Sand, Cape Town, South |
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South view |
| Macro |
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Location:
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Blouberg Beach, 15 km north of Cape Town, South Afrika
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Depositional facies:
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Beach
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Provenance:
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Mixture of hinterland dunes and shallow water carbonate grains
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Composition:
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Quartz, aragonite, siliceous sponge needles
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Petrographic thin section:
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Texture:
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Medium grained, subangular, poorly sorted
Sample number | Collector | Date of sampling |
|---|---|---|
| Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin | 14. August 1992 |
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Comments:
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Shallow water; sponge patch reefs few 100 m in front of coast, mixed with mussel beds in the surf zone;
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Africa
| !0050 - AF_Cape_town_bloubergsm.jpg|thumbnail! | | !CIMG0406_makro.JPG|thumbnail! |
| South view \\
{table-cell:width=30%}
{table-cell} | Macro |
| *Location* \\ | Blouberg Beach, 15 km north of Cape Town, South Africa |
| *Depositional facies* \\ | Beach |
| *Provenance* \\ | Mixture of hinterland dunes and shallow water carbonate grains |
| *Composition* \\ | Quartz, aragonite, siliceous sponge needles |
| *Texture* | Medium grained, subangular, poorly sorted |
h6. Petrographic thin section:
| *Description* | Mixture of siliceous (quartz, little feldspar) and calcitic debris (fragments of echinoids and bryozoa), little transparent sponge needles |
| !18-IMGP5025_Hellfeld_1700.jpg|thumbnail! | | !18-IMGP5026_Dunkelfeld_1600.jpg|thumbnail! |
| Bright field \\
{table-cell:width=30%}
{table-cell} | Dark field |
| *Sample number* | heubeck0018 |
| *Collector* | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin |
| *Date of sampling* | 14. August 1992 |
h6. Comments:
Shallow water; sponge patch reefs few 100 m in front of coast, mixed with mussel beds in the surf zone; Blouberg Bay is a popular beach ca. 15 km north of Cape Town.
[Additional data page|geowisssand:0018 Additional data]
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