Volcanic
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litharenite, beach sand,
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Tenerife, Puerto de la Cruz
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www.fotopaises.com | Macro |
Location |
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Location of sample, geographic area
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Provenance:
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Provenance of the sand, description of sedimentation route....
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Composition:
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Composition of the sand, mineralogy, ecc.
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Texture:
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Texture of the grains, ecc.
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Sample Number:
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number of the sample
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Collector:
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Collector of the sand, Institution
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Date:
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Date of sampling
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Comments:
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Beach at Puerto de la Cruz, Tenerife | |
Depositional facies | replace this with text about the dep facies |
Provenance | Basaltic, Pico del Teide |
Composition | mostly VRF (basaltic mikrolithes, ignimbrites), clinopyroxene, olivine, opaque ores (magnetite), epidote, microcline |
Texture | 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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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 |
Sample number | heubeck0086 |
Collector | Prof. Walter Franke, Freie Universität Berlin |
Date of sampling | ca. 1980 |
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Comments:
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high textural maturity, but mineralogical immature; contains small amounts of magnetite;
the cliffs and beaches of the Canary Islands are renowned for the presence of mafic minerals
More thin section images on the Additional data pageFurther comments on the sand, depositional history, ecc.