Volcanic litharenite, beach sand, Tenerife, Puerto de la Cruz
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www.fotopaises.com | Macro |
Location |
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Beach at Puerto de la Cruz, Tenerife | |
Depositional facies | replace this with text about the dep facies |
Provenance |
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Basaltic, Pico del Teide | |
Composition |
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Macro |
mostly VRF (basaltic mikrolithes, ignimbrites), clinopyroxene, olivine, opaque ores (magnetite), epidote, microcline |
Texture |
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high textural maturity: very well sorted, well rounded, black, greenish, hyaline shining, smooth and dull, rough-textured surfaces, medium sand (250 to 400 μm) |
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Petrographic thin section:
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Bright field | Dark field |
Description | mostly coarse VRF (basaltic mikrolithes, ignimbrites), in addition phx of clinopyroxene, olivine, opaque ores (magnetite), epidote, microcline |
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Bright field | Dark field |
coloured clinopyroxen cristals, finegrained basaltic microlithic lava, opaque magnetite
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Sample Number:
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Sample number | heubeck0086 |
Collector |
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Prof. Walter Franke, Freie Universität Berlin | |
Date |
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of sampling | ca. 1980 |
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Comments:
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high textural maturity, but mineralogical immature; contains small amounts of magnetite
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the cliffs and beaches of the Canary Islands are renowned for the presence of mafic minerals
More thin section images on the Additional data page
