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Eolian
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Sand,
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Red
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Centre,
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Australia
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Red Centre, Australia | Macro, sphere is 2000 μ |
Location | Curtain Creek, Red Centre, Australia |
Depositional facies | Eolian deposition in dune and interdune areas |
Provenance | Sedimentary rocks in central Australia (e.g. Ayers Rock, Kata Tjuta, Mount Conner) |
Composition | Almost exclusively limpid monocrytalline quartz with FeOx or clay cutanes |
Texture | Very well sorted, subrounded, dim surfaces, red fine sand (125 - 160 μm) |
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Petrographic thin section:
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Description | Limpid monocrystalline quartz, red FeOx cutanes |
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Bright field | Close up |
Sample number | heubeck0043 |
Collector | Dr. Dorothee Mertmann, Universität Halle |
Date of sampling | 2007 |
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Comments:
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Red colour of quartz grains caused by FeOx cutanes, frequent humidification through periodical rise of ground water
